Masses and compositions of three small planets orbiting the nearby M dwarf L231-32 (TOI-270) and the M dwarf radius valley

Van Eylen, Vincent; Astudillo-Defru, N.; Bonfıls, X.; H. Livingston, John; Hirano, Teruyuki; Luque, R.; W. F. Lam, K.; B. Justesen, A.; N. Winn, Joshua; Gandolfi, D.; Nowak, G.; Πάλλη, Ε.; Albrecht, Simon; Dai, F.; Campos Estrada, Beatriz; E. Owen, James; Foreman-Mackey, Daniel; Fridlund, M.; Korth, J.; Mathur, S.; Forveille, T.; M. Evans, T.; L. M. Osborne, H.; S K Ho, Cynthia; M. Almenara, J.; Artigau, Étienne; Barragán, Oscar; C. C. Barros, S.; Bouchy, F.; Cabrera, J.; A. Caldwell, Douglas; Charbonneau, David; Chaturvedi, P.; D. Cochran, William; Csizmadia, Szilárd; Damasso, M.; Delfosse, X.; R. De Medeiros, J.; F. Díaz, R.; Doyon, René; Esposito, M.; Fürész, Gábor; Figueira, P.; Georgieva, Iskra; Goffo, Elisa; Grziwa, S.; W. Guenther, E.; P. Hatzes, A.; M. Jenkins, Jon; Kábath, P.; Knudstrup, Emil; W. Latham, David; Lavie, B.; Lovis, C.; E. Mennickent, R.; E. Mullally, Susan; Murgas, F.; Narita, Norio; Pepe, F.; M. Persson, C.; Redfield, Seth; Ricker, G.; C. Santos, N.; Seager, Sara; M. Serrano, L.; M. S. Smith, A.; Suárez Mascareño, A.; Šubjak, J.; D. Twicken, Joseph; Udry, S.; Vanderspek, R.; R. Zapatero Osorio, M.

doi:10.1093/mnras/stab2143

Public

Masses and compositions of three small planets orbiting the nearby M dwarf L231-32 (TOI-270) and the M dwarf radius valley

Published in Monthly Notices of the Royal Astronomical Society • Aug 20, 2021

Authors:

Vincent Van Eylen

N. Astudillo-Defru

X. Bonfıls

Abstract

Abstract We report on precise Doppler measurements of L231-32 (TOI-270), a nearby M dwarf (d = 22 pc, M⋆ = 0.39 M⊙, R⋆ = 0.38 R⊙), which hosts three transiting planets that were recently discovered using data from the Transiting Exoplanet Survey Satellite (TESS). The three planets are 1.2, 2.4, and ...

Subject

Physics

RADIUS

Astrophysics

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