A pair of TESS planets spanning the radius valley around the nearby mid-M dwarf LTT 3780

12 May 2020 Cloutier Ryan Eastman Jason D. Rodriguez Joseph E. Astudillo-Defru Nicola Bonfils Xavier Mortier Annelies Watson Christopher A. Stalport Manu Pinamonti Matteo Lienhard Florian Harutyunyan Avet Damasso Mario Latham David W. Collins Karen A. Massey Robert Irwin Jonathan Winters Jennifer G. Charbonneau David Ziegler Carl Matthews Elisabeth Crossfield Ian J. M. Kreidberg Laura Quinn Samuel N. Ricker George Vanderspek Roland Seager Sara Winn Joshua Jenkins Jon M. Vezie Michael Udry Stéphane Twicken Joseph D. Tenenbaum Peter Sozzetti Alessandro Ségransan Damien Schlieder Joshua E. Sasselov Dimitar Santos Nuno C. Rice Ken Rackham Benjamin V. Poretti Ennio Piotto Giampaolo Phillips David Pepe Francesco Molinari Emilio Mignon Lucile Micela Giuseppina Melo Claudio de Medeiros José R. Mayor Michel Matson Rachel Fiorenzano Aldo F. Martinez Mann Andrew W. Magazzú Antonio Lovis Christophe López-Morales Mercedes Lopez Eric Lissauer Jack J. Lépine Sébastien Law Nicholas Kielkopf John F. Johnson John A. Jensen Eric L. N. Howell Steve B. Gonzales Erica Ghedina Adriano Forveille Thierry Figueira Pedro Dumusque Xavier Dressing Courtney D. Doyon René Díaz Rodrigo F. Di Fabrizio Luca Delfosse Xavier Cosentino Rosario Conti Dennis M. Collins Kevin I. Cameron Andrew Collier Ciardi David Caldwell Douglas A. Burke Christopher Buchhave Lars Briceño César Boyd Patricia Bouchy François Beichman Charles Artigau Étienne Almenara Jose M.

We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780 (TIC 36724087, TOI-732, $V=13.07$, $K_s=8.204$, $R_s$=0.374 R$_{\odot}$, $M_s$=0.401 M$_{\odot}$, d=22 pc). The two planet candidates are identified in a single TESS sector and are validated with reconnaissance spectroscopy, ground-based photometric follow-up, and high-resolution imaging... (read more)

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  • EARTH AND PLANETARY ASTROPHYSICS