Publications

2019

  • [DOI] Luque, R., T. Trifonov, S. Reffert, A. Quirrenbach, M. H. Lee, S. Albrecht, M. Fredslund Andersen, V. Antoci, F. Grundahl, C. Schwab, and V. Wolthoff. 2019. Precise radial velocities of giant stars. XIII. A second Jupiter orbiting in 4:3 resonance in the 7 CMa system. ApJ 631 A136.
    [Bibtex]
    @ARTICLE{Luque2019,
           author = {{Luque}, R. and {Trifonov}, T. and {Reffert}, S. and {Quirrenbach}, A. and
             {Lee}, M. H. and {Albrecht}, S. and {Fredslund Andersen}, M. and
             {Antoci}, V. and {Grundahl}, F. and {Schwab}, C. and {Wolthoff}, V.},
            title = "{Precise radial velocities of giant stars. XIII. A second Jupiter orbiting in 4:3 resonance in the 7 CMa system}",
          journal = {ApJ},
         keywords = {techniques: radial velocities, planetary systems, planets and satellites: dynamical evolution and stability, planets and satellites: detection},
             year = "2019",
            month = "Nov",
           volume = {631},
              eid = {A136},
            pages = {A136},
              doi = {10.1051/0004-6361/201936464},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019A&A...631A.136L},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Morales, J. C., A. J. Mustill, I. Ribas, M. B. Davies, A. Reiners, F. F. Bauer, et al., and T. Trifonov. 2019. A giant exoplanet orbiting a very-low-mass star challenges planet formation models. Science 365 (6460):1441-1445.
    [Bibtex]
    @ARTICLE{Morales2019,
           author = {{Morales}, J. C. and {Mustill}, A. J. and {Ribas}, I. and
             {Davies}, M. B. and {Reiners}, A. and {Bauer}, F. F. and  {et al.} and {Trifonov}, T. },
            title = "{A giant exoplanet orbiting a very-low-mass star challenges planet formation models}",
          journal = {Science},
         keywords = {PLANET SCI; ASTRONOMY, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics},
             year = "2019",
            month = "Sep",
           volume = {365},
           number = {6460},
            pages = {1441-1445},
              doi = {10.1126/science.aax3198},
    archivePrefix = {arXiv},
           eprint = {1909.12174},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019Sci...365.1441M},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Ratzloff, Jeffrey K., Henry T. Corbett, Nicholas M. Law, Brad N. Barlow, Amy Glazier, Ward S. Howard, Octavi Fors, Daniel del Ser, and Trifon Trifonov. 2019. Variables in the Southern Polar Region Evryscope 2016 Data Set. PASP 131 (1002):084201.
    [Bibtex]
    @ARTICLE{Ratzloff2019,
           author = {{Ratzloff}, Jeffrey K. and {Corbett}, Henry T. and {Law}, Nicholas M. and
             {Barlow}, Brad N. and {Glazier}, Amy and {Howard}, Ward S. and
             {Fors}, Octavi and {del Ser}, Daniel and {Trifonov}, Trifon},
            title = "{Variables in the Southern Polar Region Evryscope 2016 Data Set}",
          journal = {PASP},
         keywords = {Astrophysics - Solar and Stellar Astrophysics},
             year = "2019",
            month = "Aug",
           volume = {131},
           number = {1002},
            pages = {084201},
              doi = {10.1088/1538-3873/ab1d77},
    archivePrefix = {arXiv},
           eprint = {1905.02738},
     primaryClass = {astro-ph.SR},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019PASP..131h4201R},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Luque, R., E. Pallé, D. Kossakowski, S. Dreizler, J. Kemmer, N. Espinoza, J. Burt, G. Anglada-Escudé, V. J. S. Béjar, et al., and T. Trifonov. 2019. Planetary system around the nearby M dwarf GJ 357 including a transiting, hot, Earth-sized planet optimal for atmospheric characterization. A&A 628 A39.
    [Bibtex]
    @ARTICLE{Luque22019,
           author = {{Luque}, R. and {Pall{\'e}}, E. and {Kossakowski}, D. and
             {Dreizler}, S. and {Kemmer}, J. and {Espinoza}, N. and {Burt}, J. and
             {Anglada-Escud{\'e}}, G. and {B{\'e}jar}, V. J. S. and  {et al.} and {Trifonov}, T. },
            title = "{Planetary system around the nearby M dwarf GJ 357 including a transiting, hot, Earth-sized planet optimal for atmospheric characterization}",
          journal = {A&A},
         keywords = {planetary systems, techniques: photometric, techniques: radial velocities, stars: individual: Gl 357, stars: late-type, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "Aug",
           volume = {628},
              eid = {A39},
            pages = {A39},
              doi = {10.1051/0004-6361/201935801},
    archivePrefix = {arXiv},
           eprint = {1904.12818},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019A&A...628A..39L},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Zechmeister, M., S. Dreizler, I. Ribas, A. Reiners, J. A. Caballero, F. F. Bauer, V. J. S. Béjar, L. González-Cuesta, E. Herrero, S. Lalitha, et al., and T. Trifonov. 2019. The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden’s Star. A&A 627 A49.
    [Bibtex]
    @ARTICLE{Zechmeister2019,
           author = {{Zechmeister}, M. and {Dreizler}, S. and {Ribas}, I. and {Reiners}, A. and
             {Caballero}, J. A. and {Bauer}, F. F. and {B{\'e}jar}, V. J. S. and
             {Gonz{\'a}lez-Cuesta}, L. and {Herrero}, E. and {Lalitha}, S. and  {et al.} and {Trifonov}, T. },
            title = "{The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star}",
          journal = {A&A},
         keywords = {methods: data analysis, planetary systems, stars: late-type, stars: individual: Teegarden's Star, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "Jul",
           volume = {627},
              eid = {A49},
            pages = {A49},
              doi = {10.1051/0004-6361/201935460},
    archivePrefix = {arXiv},
           eprint = {1906.07196},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019A&A...627A..49Z},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Reichert, Katja, Sabine Reffert, Stephan Stock, Trifon Trifonov, and Andreas Quirrenbach. 2019. Precise radial velocities of giant stars. XII. Evidence against the proposed planet Aldebaran b. A&A 625 A22.
    [Bibtex]
    @ARTICLE{Reichert2019,
           author = {{Reichert}, Katja and {Reffert}, Sabine and {Stock}, Stephan and
             {Trifonov}, Trifon and {Quirrenbach}, Andreas},
            title = "{Precise radial velocities of giant stars. XII. Evidence against the proposed planet Aldebaran b}",
          journal = {A&A},
         keywords = {stars: individual: {\ensuremath{\alpha}} Tau, planets and satellites: detection, techniques: radial velocities, instrumentation: spectrographs, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "May",
           volume = {625},
              eid = {A22},
            pages = {A22},
              doi = {10.1051/0004-6361/201834028},
    archivePrefix = {arXiv},
           eprint = {1903.09157},
     primaryClass = {astro-ph.SR},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019A&A...625A..22R},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Hjorth, M., A. B. Justesen, T. Hirano, S. Albrecht, D. Gandolfi, F. Dai, R. Alonso, O. Barragán, M. Esposito, M. Kuzuhara, K. W. F. Lam, et al., and T. Trifonov. 2019. K2-290: a warm Jupiter and a mini-Neptune in a triple-star system. MNRAS 484 (3):3522-3536.
    [Bibtex]
    @ARTICLE{Hjorth2019,
           author = {{Hjorth}, M. and {Justesen}, A. B. and {Hirano}, T. and {Albrecht}, S. and
             {Gandolfi}, D. and {Dai}, F. and {Alonso}, R. and {Barrag{\'a}n}, O. and
             {Esposito}, M. and {Kuzuhara}, M. and {Lam}, K. W. F. and  {et al.} and {Trifonov}, T. },
            title = "{K2-290: a warm Jupiter and a mini-Neptune in a triple-star system}",
          journal = {MNRAS},
         keywords = {planets and satellites: detection, planets and satellites: formation, planets and satellites: individual: K2-290, planets and satellites: individual: EPIC 249624646, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "Apr",
           volume = {484},
           number = {3},
            pages = {3522-3536},
              doi = {10.1093/mnras/stz139},
    archivePrefix = {arXiv},
           eprint = {1901.03716},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019MNRAS.484.3522H},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Quirrenbach, Andreas, Trifon Trifonov, Man Hoi Lee, and Sabine Reffert. 2019. Precise radial velocities of giant stars. XI. Two brown dwarfs in 6:1 mean motion resonance around the K giant star \ensuremath\nu Ophiuchi. A&A 624 A18.
    [Bibtex]
    @ARTICLE{Quirrenbach2019,
           author = {{Quirrenbach}, Andreas and {Trifonov}, Trifon and {Lee}, Man Hoi and
             {Reffert}, Sabine},
            title = "{Precise radial velocities of giant stars. XI. Two brown dwarfs in 6:1 mean motion resonance around the K giant star {\ensuremath{\nu}} Ophiuchi}",
          journal = {A&A},
         keywords = {techniques: radial velocities, planets and satellites: detection, planets and satellites: dynamical evolution and stability, brown dwarfs, planetary systems, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "Apr",
           volume = {624},
              eid = {A18},
            pages = {A18},
              doi = {10.1051/0004-6361/201834423},
    archivePrefix = {arXiv},
           eprint = {1904.03557},
     primaryClass = {astro-ph.SR},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019A&A...624A..18Q},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Tal-Or, Lev, Trifon Trifonov, Shay Zucker, Tsevi Mazeh, and Mathias Zechmeister. 2019. Correcting HIRES/Keck radial velocities for small systematic errors. MNRAS 484 (1):L8-L13.
    [Bibtex]
    @ARTICLE{TalOr2019,
           author = {{Tal-Or}, Lev and {Trifonov}, Trifon and {Zucker}, Shay and
             {Mazeh}, Tsevi and {Zechmeister}, Mathias},
            title = "{Correcting HIRES/Keck radial velocities for small systematic errors}",
          journal = {MNRAS},
         keywords = {instrumentation: spectrographs, techniques: radial velocities, planetary systems, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Solar and Stellar Astrophysics},
             year = "2019",
            month = "Mar",
           volume = {484},
           number = {1},
            pages = {L8-L13},
              doi = {10.1093/mnrasl/sly227},
    archivePrefix = {arXiv},
           eprint = {1810.02986},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019MNRAS.484L...8T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Trifonov, Trifon, Stephan Stock, Thomas Henning, Sabine Reffert, Martin Kürster, Man Hoi Lee, Bertram Bitsch, Paul R. Butler, and Steven S. Vogt. 2019. Two Jovian Planets around the Giant Star HD 202696: A Growing Population of Packed Massive Planetary Pairs around Massive Stars?. AJ 157 (3):93.
    [Bibtex]
    @ARTICLE{Trifonov2019,
           author = {{Trifonov}, Trifon and {Stock}, Stephan and {Henning}, Thomas and
             {Reffert}, Sabine and {K{\"u}rster}, Martin and {Lee}, Man Hoi and
             {Bitsch}, Bertram and {Butler}, R. Paul and {Vogt}, Steven S.},
            title = "{Two Jovian Planets around the Giant Star HD 202696: A Growing Population of Packed Massive Planetary Pairs around Massive Stars?}",
          journal = {AJ},
         keywords = {planetary systems, planets and satellites: detection, planets and satellites: dynamical evolution and stability, techniques: radial velocities, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "Mar",
           volume = {157},
           number = {3},
              eid = {93},
            pages = {93},
              doi = {10.3847/1538-3881/aafa11},
    archivePrefix = {arXiv},
           eprint = {1901.01935},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019AJ....157...93T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Wang, Songhu, Matias Jones, Avi Shporer, Benjamin J. Fulton, Leonardo A. Paredes, Trifon Trifonov, Diana Kossakowski, Jason Eastman, and et al.. 2019. HD 202772A b: A Transiting Hot Jupiter around a Bright, Mildly Evolved Star in a Visual Binary Discovered by TESS. AJ 157 (2):51.
    [Bibtex]
    @ARTICLE{Wang2019,
           author = {{Wang}, Songhu and {Jones}, Matias and {Shporer}, Avi and
             {Fulton}, Benjamin J. and {Paredes}, Leonardo A. and
             {Trifonov}, Trifon and {Kossakowski}, Diana and {Eastman}, Jason and  {et al.}  },
            title = "{HD 202772A b: A Transiting Hot Jupiter around a Bright, Mildly Evolved Star in a Visual Binary Discovered by TESS}",
          journal = {AJ},
         keywords = {planetary systems, planets and satellites: detection, stars: individual (TIC 290131778-TOI 123-HD 202772, techniques: radial velocities, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "Feb",
           volume = {157},
           number = {2},
              eid = {51},
            pages = {51},
              doi = {10.3847/1538-3881/aaf1b7},
    archivePrefix = {arXiv},
           eprint = {1810.02341},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019AJ....157...51W},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Trifonov, Trifon, Jan Rybizki, and Martin Kürster. 2019. TESS exoplanet candidates validated with HARPS archival data. A massive Neptune around GJ 143 and two Neptunes around HD 23472. A&A 622 L7.
    [Bibtex]
    @ARTICLE{Trifonov2019,
           author = {{Trifonov}, Trifon and {Rybizki}, Jan and {K{\"u}rster}, Martin},
            title = "{TESS exoplanet candidates validated with HARPS archival data. A massive Neptune around GJ 143 and two Neptunes around HD 23472}",
          journal = {A&A},
         keywords = {techniques: radial velocities, planets and satellites: detection, planets and satellites: dynamical evolution and stability, Astrophysics - Earth and Planetary Astrophysics},
             year = "2019",
            month = "Feb",
           volume = {622},
              eid = {L7},
            pages = {L7},
              doi = {10.1051/0004-6361/201834817},
    archivePrefix = {arXiv},
           eprint = {1812.04501},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2019A&A...622L...7T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }

2018

  • [DOI] Luque, R., G. Nowak, E. Pallé, D. Kossakowski, T. Trifonov, M. Zechmeister, V. J. S. Béjar, C. Cardona Guillén, and et al.. 2018. The CARMENES search for exoplanets around M dwarfs. The warm super-Earths in twin orbits around the mid-type M dwarfs Ross 1020 (GJ 3779) and LP 819-052 (GJ 1265). A&A 620 A171.
    [Bibtex]
    @ARTICLE{Luque2018,
           author = {{Luque}, R. and {Nowak}, G. and {Pall{\'e}}, E. and {Kossakowski}, D. and
             {Trifonov}, T. and {Zechmeister}, M. and {B{\'e}jar}, V. J. S. and
             {Cardona Guill{\'e}n}, C. and  {et al.}},
            title = "{The CARMENES search for exoplanets around M dwarfs. The warm super-Earths in twin orbits around the mid-type M dwarfs Ross 1020 (GJ 3779) and LP 819-052 (GJ 1265)}",
          journal = {A&A},
         keywords = {techniques: radial velocities, stars: late-type, stars: low-mass, planetary systems, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Dec",
           volume = {620},
              eid = {A171},
            pages = {A171},
              doi = {10.1051/0004-6361/201833423},
    archivePrefix = {arXiv},
           eprint = {1810.07572},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018A&A...620A.171L},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Ribas, I., M. Tuomi, A. Reiners, R. P. Butler, J. C. Morales, M. Perger, S. Dreizler, C. Rodr’iguez-López, J. I. González Hernández, A. Rosich, F. Feng, Trifonov T, and et al.. 2018. A candidate super-Earth planet orbiting near the snow line of Barnard’s star. Nature 563 (7731):365-368.
    [Bibtex]
    @ARTICLE{Ribas2018,
           author = {{Ribas}, I. and {Tuomi}, M. and {Reiners}, A. and {Butler}, R. P. and
             {Morales}, J. C. and {Perger}, M. and {Dreizler}, S. and
             {Rodr{\'\i}guez-L{\'o}pez}, C. and {Gonz{\'a}lez Hern{\'a}ndez}, J. I. and
             {Rosich}, A. and {Feng}, F. and {Trifonov}, T, and  {et al.}},
            title = "{A candidate super-Earth planet orbiting near the snow line of Barnard's star}",
          journal = {Nature},
         keywords = {Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics},
             year = "2018",
            month = "Nov",
           volume = {563},
           number = {7731},
            pages = {365-368},
              doi = {10.1038/s41586-018-0677-y},
    archivePrefix = {arXiv},
           eprint = {1811.05955},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018Natur.563..365R},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Johnson, M. C., F. Dai, A. B. Justesen, D. Gandolfi, A. P. Hatzes, G. Nowak, M. Endl, W. D. Cochran, D. Hidalgo, N. Watanabe, H. Parviainen, et al., and T. Trifonov. 2018. K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star. MNRAS 481 (1):596-612.
    [Bibtex]
    @ARTICLE{Johnson2018,
           author = {{Johnson}, M. C. and {Dai}, F. and {Justesen}, A. B. and {Gandolfi}, D. and
             {Hatzes}, A. P. and {Nowak}, G. and {Endl}, M. and {Cochran}, W. D. and
             {Hidalgo}, D. and {Watanabe}, N. and {Parviainen}, H. and  {et al.} and {Trifonov}, T. },
            title = "{K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star}",
          journal = {MNRAS},
         keywords = {planets and satellites: detection, planets and satellites: individual: K2-260 b, K2-261 b, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Nov",
           volume = {481},
           number = {1},
            pages = {596-612},
              doi = {10.1093/mnras/sty2238},
    archivePrefix = {arXiv},
           eprint = {1806.06099},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018MNRAS.481..596J},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Prieto-Arranz, J., E. Palle, D. Gandolfi, O. Barragán, E. W. Guenther, F. Dai, M. Fridlund, T. Hirano, et al., and T. Trifonov. 2018. Mass determination of the 1:3:5 near-resonant planets transiting GJ 9827 (K2-135). A&A 618 A116.
    [Bibtex]
    @ARTICLE{PrietoArranz2018,
           author = {{Prieto-Arranz}, J. and {Palle}, E. and {Gandolfi}, D. and
             {Barrag{\'a}n}, O. and {Guenther}, E. W. and {Dai}, F. and
             {Fridlund}, M. and {Hirano}, T. and  {et al.} and {Trifonov}, T. },
            title = "{Mass determination of the 1:3:5 near-resonant planets transiting GJ 9827 (K2-135)}",
          journal = {A&A},
         keywords = {planetary systems, techniques: high angular resolution, techniques: photometric, techniques: radial velocities, stars: abundances, stars: individual: GJ 9827, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Oct",
           volume = {618},
              eid = {A116},
            pages = {A116},
              doi = {10.1051/0004-6361/201832872},
    archivePrefix = {arXiv},
           eprint = {1802.09557},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018A&A...618A.116P},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Kaminski, A., T. Trifonov, J. A. Caballero, A. Quirrenbach, I. Ribas, A. Reiners, P. J. Amado, M. Zechmeister, S. Dreizler, and et al.. 2018. The CARMENES search for exoplanets around M dwarfs. A Neptune-mass planet traversing the habitable zone around HD 180617. A&A 618 A115.
    [Bibtex]
    @ARTICLE{Kaminski2018,
           author = {{Kaminski}, A. and {Trifonov}, T. and {Caballero}, J. A. and
             {Quirrenbach}, A. and {Ribas}, I. and {Reiners}, A. and {Amado}, P. J. and
             {Zechmeister}, M. and {Dreizler}, S. and  {et al.}},
            title = "{The CARMENES search for exoplanets around M dwarfs. A Neptune-mass planet traversing the habitable zone around HD 180617}",
          journal = {A&A},
         keywords = {planetary systems, stars: late-type, stars: low-mass, stars: individual: HD 180617, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Oct",
           volume = {618},
              eid = {A115},
            pages = {A115},
              doi = {10.1051/0004-6361/201833354},
    archivePrefix = {arXiv},
           eprint = {1808.01183},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018A&A...618A.115K},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Van Eylen, V., F. Dai, S. Mathur, D. Gandolfi, S. Albrecht, M. Fridlund, R. A. Garc’ia, E. Guenther, M. Hjorth, et al., and T. Trifonov. 2018. HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2. MNRAS 478 (4):4866-4880.
    [Bibtex]
    @ARTICLE{VanEylen2018,
           author = {{Van Eylen}, V. and {Dai}, F. and {Mathur}, S. and {Gandolfi}, D. and
             {Albrecht}, S. and {Fridlund}, M. and {Garc{\'\i}a}, R. A. and
             {Guenther}, E. and {Hjorth}, M. and  {et al.} and {Trifonov}, T. },
            title = "{HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2}",
          journal = {MNRAS},
         keywords = {asteroseismology, planets and satellites: composition, planets and satellites: formation, planets and satellites: fundamental parameters, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics},
             year = "2018",
            month = "Aug",
           volume = {478},
           number = {4},
            pages = {4866-4880},
              doi = {10.1093/mnras/sty1390},
    archivePrefix = {arXiv},
           eprint = {1805.01860},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018MNRAS.478.4866V},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Sarkis, Paula, Thomas Henning, Martin Kürster, Trifon Trifonov, Mathias Zechmeister, Lev Tal-Or, Guillem Anglada-Escudé, Artie P. Hatzes, and et al.. 2018. The CARMENES Search for Exoplanets around M Dwarfs: A Low-mass Planet in the Temperate Zone of the Nearby K2-18. AJ 155 (6):257.
    [Bibtex]
    @ARTICLE{Sarkis2018,
           author = {{Sarkis}, Paula and {Henning}, Thomas and {K{\"u}rster}, Martin and
             {Trifonov}, Trifon and {Zechmeister}, Mathias and {Tal-Or}, Lev and
             {Anglada-Escud{\'e}}, Guillem and {Hatzes}, Artie P. and {et al.}},
            title = "{The CARMENES Search for Exoplanets around M Dwarfs: A Low-mass Planet in the Temperate Zone of the Nearby K2-18}",
          journal = {AJ},
         keywords = {stars: activity, stars: individual: K2-18, stars: low-mass, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Jun",
           volume = {155},
           number = {6},
              eid = {257},
            pages = {257},
              doi = {10.3847/1538-3881/aac108},
    archivePrefix = {arXiv},
           eprint = {1805.00830},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018AJ....155..257S},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Trifonov, Trifon, Man Hoi Lee, Sabine Reffert, and Andreas Quirrenbach. 2018. Dynamical Analysis of the Circumprimary Planet in the Eccentric Binary System HD 59686. AJ 155 (4):174.
    [Bibtex]
    @ARTICLE{Trifonov2018,
           author = {{Trifonov}, Trifon and {Lee}, Man Hoi and {Reffert}, Sabine and
             {Quirrenbach}, Andreas},
            title = "{Dynamical Analysis of the Circumprimary Planet in the Eccentric Binary System HD 59686}",
          journal = {AJ},
         keywords = {planetary systems, planets and satellites: detection, planets and satellites: dynamical evolution and stability, techniques: radial velocities, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Apr",
           volume = {155},
           number = {4},
              eid = {174},
            pages = {174},
              doi = {10.3847/1538-3881/aab439},
    archivePrefix = {arXiv},
           eprint = {1803.01434},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018AJ....155..174T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Reiners, A., M. Zechmeister, J. A. Caballero, I. Ribas, J. C. Morales, S. V. Jeffers, P. Schöfer, L. Tal-Or, A. Quirrenbach, P. J. Amado, A. Kaminski, et al., and T. Trifonov. 2018. The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey stars. A&A 612 A49.
    [Bibtex]
    @ARTICLE{Reiners2018,
           author = {{Reiners}, A. and {Zechmeister}, M. and {Caballero}, J. A. and
             {Ribas}, I. and {Morales}, J. C. and {Jeffers}, S. V. and
             {Sch{\"o}fer}, P. and {Tal-Or}, L. and {Quirrenbach}, A. and
             {Amado}, P. J. and {Kaminski}, A. and  {et al.} and {Trifonov}, T. },
            title = "{The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey stars}",
          journal = {A&A},
         keywords = {atlases, catalogs, stars: rotation, stars: late-type, stars: low-mass, infrared: stars, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Apr",
           volume = {612},
              eid = {A49},
            pages = {A49},
              doi = {10.1051/0004-6361/201732054},
    archivePrefix = {arXiv},
           eprint = {1711.06576},
     primaryClass = {astro-ph.SR},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018A&A...612A..49R},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Trifonov, T., M. Kürster, M. Zechmeister, L. Tal-Or, J. A. Caballero, A. Quirrenbach, P. J. Amado, I. Ribas, A. Reiners, S. Reffert, S. Dreizler, and et al.. 2018. The CARMENES search for exoplanets around M dwarfs . First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems. A&A 609 A117.
    [Bibtex]
    @ARTICLE{Trifonov_carm_2018,
           author = {{Trifonov}, T. and {K{\"u}rster}, M. and {Zechmeister}, M. and
             {Tal-Or}, L. and {Caballero}, J. A. and {Quirrenbach}, A. and
             {Amado}, P. J. and {Ribas}, I. and {Reiners}, A. and {Reffert}, S. and
             {Dreizler}, S. and  {et al.}},
            title = "{The CARMENES search for exoplanets around M dwarfs . First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems}",
          journal = {A&A},
         keywords = {planetary systems, stars: late-type, stars: low-mass, planets and satellites: dynamical evolution and stability, Astrophysics - Earth and Planetary Astrophysics},
             year = "2018",
            month = "Feb",
           volume = {609},
              eid = {A117},
            pages = {A117},
              doi = {10.1051/0004-6361/201731442},
    archivePrefix = {arXiv},
           eprint = {1710.01595},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018A&A...609A.117T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Reiners, A., I. Ribas, M. Zechmeister, J. A. Caballero, T. Trifonov, S. Dreizler, J. C. Morales, L. Tal-Or, M. Lafarga, A. Quirrenbach, P. J. Amado, A. Kaminski, and et al.. 2018. The CARMENES search for exoplanets around M dwarfs. HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf. A&A 609 L5.
    [Bibtex]
    @ARTICLE{Reiners_carm_2018,
           author = {{Reiners}, A. and {Ribas}, I. and {Zechmeister}, M. and
             {Caballero}, J. A. and {Trifonov}, T. and {Dreizler}, S. and
             {Morales}, J. C. and {Tal-Or}, L. and {Lafarga}, M. and
             {Quirrenbach}, A. and {Amado}, P. J. and {Kaminski}, A. and  {et al.}},
            title = "{The CARMENES search for exoplanets around M dwarfs. HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf}",
          journal = {A&A},
         keywords = {stars: individual: HD 147379, planets and satellites: individual: HD 147379 b, stars: activity, stars: rotation, stars: late-type, stars: low-mass, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics},
             year = "2018",
            month = "Jan",
           volume = {609},
              eid = {L5},
            pages = {L5},
              doi = {10.1051/0004-6361/201732165},
    archivePrefix = {arXiv},
           eprint = {1712.05797},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2018A&A...609L...5R},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }

2017

  • [DOI] Trifonov, T., M. Kürster, M. Zechmeister, O. V. Zakhozhay, S. Reffert, M. H. Lee, F. Rodler, S. S. Vogt, and S. S. Brems. 2017. Three planets around HD 27894. A close-in pair with a 2:1 period ratio and an eccentric Jovian planet at 5.4 AU. A&A 602 L8.
    [Bibtex]
    @ARTICLE{Trifonov2017,
           author = {{Trifonov}, T. and {K{\"u}rster}, M. and {Zechmeister}, M. and
             {Zakhozhay}, O. V. and {Reffert}, S. and {Lee}, M. H. and {Rodler}, F. and
             {Vogt}, S. S. and {Brems}, S. S.},
            title = "{Three planets around HD 27894. A close-in pair with a 2:1 period ratio and an eccentric Jovian planet at 5.4 AU}",
          journal = {A&A},
         keywords = {techniques: radial velocities, planetary systems, planets and satellites: dynamical evolution and stability, Astrophysics - Earth and Planetary Astrophysics},
             year = "2017",
            month = "Jun",
           volume = {602},
              eid = {L8},
            pages = {L8},
              doi = {10.1051/0004-6361/201731044},
    archivePrefix = {arXiv},
           eprint = {1706.00509},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2017A&A...602L...8T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }

2016

  • [DOI] Ortiz, Mauricio, Sabine Reffert, Trifon Trifonov, Andreas Quirrenbach, David S. Mitchell, Grzegorz Nowak, Esther Buenzli, Neil Zimmerman, Mickaël Bonnefoy, Andy Skemer, Denis Defrère, Man Hoi Lee, Debra A. Fischer, and Philip M. Hinz. 2016. Precise radial velocities of giant stars. IX. HD 59686 Ab: a massive circumstellar planet orbiting a giant star in a 13.6 au eccentric binary system. A&A 595 A55.
    [Bibtex]
    @ARTICLE{Ortiz2016,
           author = {{Ortiz}, Mauricio and {Reffert}, Sabine and {Trifonov}, Trifon and
             {Quirrenbach}, Andreas and {Mitchell}, David S. and {Nowak}, Grzegorz and
             {Buenzli}, Esther and {Zimmerman}, Neil and {Bonnefoy}, Micka{\"e}l and
             {Skemer}, Andy and {Defr{\`e}re}, Denis and {Lee}, Man Hoi and
             {Fischer}, Debra A. and {Hinz}, Philip M.},
            title = "{Precise radial velocities of giant stars. IX. HD 59686 Ab: a massive circumstellar planet orbiting a giant star in a  13.6 au eccentric binary system}",
          journal = {A&A},
         keywords = {planetary systems, planets and satellites: formation, planets and satellites: fundamental parameters, planets and satellites: gaseous planets, planets and satellites: detection, planets and satellites: general, Astrophysics - Earth and Planetary Astrophysics},
             year = "2016",
            month = "Oct",
           volume = {595},
              eid = {A55},
            pages = {A55},
              doi = {10.1051/0004-6361/201628791},
    archivePrefix = {arXiv},
           eprint = {1608.00963},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2016A&A...595A..55O},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }

2015

  • [DOI] Trifonov, Trifon, Sabine Reffert, Mathias Zechmeister, Ansgar Reiners, and Andreas Quirrenbach. 2015. Precise radial velocities of giant stars. VIII. Testing for the presence of planets with CRIRES infrared radial velocities. A&A 582 A54.
    [Bibtex]
    @ARTICLE{Trifonov2015,
           author = {{Trifonov}, Trifon and {Reffert}, Sabine and {Zechmeister}, Mathias and
             {Reiners}, Ansgar and {Quirrenbach}, Andreas},
            title = "{Precise radial velocities of giant stars. VIII. Testing for the presence of planets with CRIRES infrared radial velocities}",
          journal = {A&A},
         keywords = {planetary systems, instrumentation: spectrographs, techniques: radial, velocities, methods: observational, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics},
             year = "2015",
            month = "Oct",
           volume = {582},
              eid = {A54},
            pages = {A54},
              doi = {10.1051/0004-6361/201526196},
    archivePrefix = {arXiv},
           eprint = {1508.04769},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2015A&A...582A..54T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Kürster, Martin, Trifon Trifonov, Sabine Reffert, Nadiia M. Kostogryz, and Florian Rodler. 2015. Disentangling 2:1 resonant radial velocity orbits from eccentric ones and a case study for HD 27894. A&A 577 A103.
    [Bibtex]
    @ARTICLE{Kuerster2015,
           author = {{K{\"u}rster}, Martin and {Trifonov}, Trifon and {Reffert}, Sabine and
             {Kostogryz}, Nadiia M. and {Rodler}, Florian},
            title = "{Disentangling 2:1 resonant radial velocity orbits from eccentric ones and a case study for HD 27894}",
          journal = {A&A},
         keywords = {celestial mechanics, planetary systems, techniques: radial velocities, stars: individual: HD 27894, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics},
             year = "2015",
            month = "May",
           volume = {577},
              eid = {A103},
            pages = {A103},
              doi = {10.1051/0004-6361/201525872},
    archivePrefix = {arXiv},
           eprint = {1503.07769},
     primaryClass = {astro-ph.SR},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2015A&A...577A.103K},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • [DOI] Reffert, Sabine, Christoph Bergmann, Andreas Quirrenbach, Trifon Trifonov, and Andreas Künstler. 2015. Precise radial velocities of giant stars. VII. Occurrence rate of giant extrasolar planets as a function of mass and metallicity. A&A 574 A116.
    [Bibtex]
    @ARTICLE{Reffert2015,
           author = {{Reffert}, Sabine and {Bergmann}, Christoph and {Quirrenbach}, Andreas and
             {Trifonov}, Trifon and {K{\"u}nstler}, Andreas},
            title = "{Precise radial velocities of giant stars. VII. Occurrence rate of giant extrasolar planets as a function of mass and metallicity}",
          journal = {A&A},
         keywords = {techniques: radial velocities, planets and satellites: detection, brown dwarfs, planetary systems, Astrophysics - Earth and Planetary Astrophysics},
             year = "2015",
            month = "Feb",
           volume = {574},
              eid = {A116},
            pages = {A116},
              doi = {10.1051/0004-6361/201322360},
    archivePrefix = {arXiv},
           eprint = {1412.4634},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2015A&A...574A.116R},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }

2014

  • [DOI] Trifonov, Trifon, Sabine Reffert, Xianyu Tan, Man Hoi Lee, and Andreas Quirrenbach. 2014. Precise radial velocities of giant stars. VI. A possible 2:1 resonant planet pair around the K giant star \ensuremath\eta Ceti. A&A 568 A64.
    [Bibtex]
    @ARTICLE{Trifonov2014,
           author = {{Trifonov}, Trifon and {Reffert}, Sabine and {Tan}, Xianyu and
             {Lee}, Man Hoi and {Quirrenbach}, Andreas},
            title = "{Precise radial velocities of giant stars. VI. A possible 2:1 resonant planet pair around the K giant star {\ensuremath{\eta}} Ceti}",
          journal = {A&A},
         keywords = {techniques: radial velocities, planets and satellites: detection, planets and satellites: dynamical evolution and stability, planetary systems, Astrophysics - Earth and Planetary Astrophysics},
             year = "2014",
            month = "Aug",
           volume = {568},
              eid = {A64},
            pages = {A64},
              doi = {10.1051/0004-6361/201322885},
    archivePrefix = {arXiv},
           eprint = {1407.0712},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2014A&A...568A..64T},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }
  • Ovcharov, E. P., A. Kurtenkov, Y. Metodieva, A. Dimitrov, P. Enikova, V. Bozhilov, I. Stanev, P. Nikolov, Y. Nikolov, P. Markishki, G. Gantchev, T. Trifonov, P. Nedialkov, and O. Stanchev. 2014. Plana Student Astronomical Observatory: First results and perspectives. Bulgarian Astronomical Journal 21 19.
    [Bibtex]
    @ARTICLE{Ovcharov2014,
           author = {{Ovcharov}, E. P. and {Kurtenkov}, A. and {Metodieva}, Y. and
             {Dimitrov}, A. and {Enikova}, P. and {Bozhilov}, V. and {Stanev}, I. and
             {Nikolov}, P. and {Nikolov}, Y. and {Markishki}, P. and {Gantchev}, G. and
             {Trifonov}, T. and {Nedialkov}, P. and {Stanchev}, O.},
            title = "{Plana Student Astronomical Observatory: First results and perspectives}",
          journal = {Bulgarian Astronomical Journal},
         keywords = {telescopes, site testing, light pollution, novae, BL Lacertae objects},
             year = "2014",
            month = "Jan",
           volume = {21},
            pages = {19},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2014BlgAJ..21...19O},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }

2013

  • [DOI] Mitchell, David S., Sabine Reffert, Trifon Trifonov, Andreas Quirrenbach, and Debra A. Fischer. 2013. Precise radial velocities of giant stars. V. A brown dwarf and a planet orbiting the K giant stars \ensuremath\tau Geminorum and 91 Aquarii. A&A 555 A87.
    [Bibtex]
    @ARTICLE{Mitchell2013,
           author = {{Mitchell}, David S. and {Reffert}, Sabine and {Trifonov}, Trifon and
             {Quirrenbach}, Andreas and {Fischer}, Debra A.},
            title = "{Precise radial velocities of giant stars. V. A brown dwarf and a planet orbiting the K giant stars {\ensuremath{\tau}} Geminorum and 91 Aquarii}",
          journal = {A&A},
         keywords = {techniques: radial velocities, planets and satellites: detection, brown dwarfs, Astrophysics - Earth and Planetary Astrophysics},
             year = "2013",
            month = "Jul",
           volume = {555},
              eid = {A87},
            pages = {A87},
              doi = {10.1051/0004-6361/201321714},
    archivePrefix = {arXiv},
           eprint = {1305.5107},
     primaryClass = {astro-ph.EP},
           adsurl = {https://ui.adsabs.harvard.edu/abs/2013A&A...555A..87M},
          adsnote = {Provided by the SAO/NASA Astrophysics Data System}
    }