Discovery of a hot, transiting, Earth-sized planet and a second temperate, non-transiting planet around the M4 dwarf GJ 3473 (TOI-488)

@article{Kemmer2020DiscoveryOA,
  title={Discovery of a hot, transiting, Earth-sized planet and a second temperate, non-transiting planet around the M4 dwarf GJ 3473 (TOI-488)},
  author={J. Kemmer and Stephan Stock and Diana Kossakowski and A. Kaminski and Karan Molaverdikhani and Martin Schlecker and Jos{\'e} Antonio Caballero and Pedro J. Amado and Nicola Astudillo-Defru and Xavier Bonfils and David R. Ciardi and Karen A. Collins and N{\'e}stor Espinoza and A. Fukui and Teruyuki Hirano and Jon M. Jenkins and David W. Latham and Elisabeth C. Matthews and Norio Narita and Enric Pall{\'e} and Hannu Parviainen and Andreas Quirrenbach and Ansgar Reiners and Ignasi Ribas and George R. Ricker and Joshua E. Schlieder and Sara Seager and Roland K. Vanderspek and Joshua N. Winn and Jose M. Almenara and V{\'i}ctor B{\'e}jar and P. Bluhm and F. Bouchy and Padi T. Boyd and J. L. Christiansen and Carlos Cifuentes and Ryan Cloutier and Kevin I. Collins and M. Cort{\'e}s-Contreras and Ian J. M. Crossfield and Nicolas Crouzet and Jerome P. de Leon and D. D. Della-Rose and Xavier Delfosse and Stefan Dreizler and Emma Esparza-Borges and Zahra Essack and Thierry Forveille and Pedro Figueira and D. Galad{\'i}-Enr{\'i}quez and Tianjun Gan and Ana Glidden and Erica J. Gonzales and Pere Guerra and Hiroki Harakawa and A. P. Hatzes and Th. Henning and E. Herrero and Klaus W. Hodapp and Yasunori Hori and Steve B. Howell and Masahiro Ikoma and Keisuke Isogai and S. V. Jeffers and Martin K{\"u}rster and Kiyoe Kawauchi and T. Kimura and P'eter Klagyivik and Takeshi Kotani and Tomomi Kurokawa and N. Kusakabe and Masayuki Kuzuhara and Marina Lafarga and J. H. Livingston and Rafael Luque and Rachel A. Matson and Juan Carlos Morales and Mayuko Mori and Philip S. Muirhead and Felipe Murgas and Jun Nishikawa and Taku Nishiumi and Masashi Omiya and Sabine Reffert and C. Rodr{\'i}guez L{\'o}pez and Nuno C. Santos and P. Sch{\"o}fer and Richard P. Schwarz and Bernie Shiao and M. Tamura and Yuka Terada and Joseph D. Twicken and A. Ueda and S{\'e}bastien Vievard and Noriharu Watanabe and Mathias Zechmeister},
  journal={Astronomy \& Astrophysics},
  year={2020}
}
We present the confirmation and characterisation of GJ 3473 b (G 50–16, TOI-488.01), a hot Earth-sized planet orbiting an M4 dwarf star, whose transiting signal (P = 1.1980035 ± 0.0000018 d) was first detected by the Transiting Exoplanet Survey Satellite (TESS). Through a joint modelling of follow-up radial velocity observations with CARMENES, IRD, and HARPS together with extensive ground-based photometric follow-up observations with LCOGT, MuSCAT, and MuSCAT2, we determined a precise planetary… 

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