Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-2095
Abstract
We report the detection and validation of two planets orbiting TOI-2095 (TIC 235678745). The host star is a 3700K M1V dwarf with a high proper motion. The star lies at a distance of 42 pc in a sparsely populated portion of the sky and is bright in the infrared (K=9). With data from 24 Sectors of observation during TESS's Cycles 2 and 4, TOI-2095 exhibits two sets of transits associated with super-Earth-sized planets. The planets have orbital periods of 17.7 days and 28.2 days and radii of 1.30 and 1.39 Earth radii, respectively. Archival data, preliminary follow-up observations, and vetting analyses support the planetary interpretation of the detected transit signals. The pair of planets have estimated equilibrium temperatures of approximately 400 K, with stellar insolations of 3.23 and 1.73 times that of Earth, placing them in the Venus zone. The planets also lie in a radius regime signaling the transition between rock-dominated and volatile-rich compositions. They are thus prime targets for follow-up mass measurements to better understand the properties of warm, transition radius planets. The relatively long orbital periods of these two planets provide crucial data that can help shed light on the processes that shape the composition of small planets orbiting M dwarfs.
Cite
@article{arxiv.2304.09189,
title = {Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-2095},
author = {Elisa V. Quintana and Emily A. Gilbert and Thomas Barclay and Michele L. Silverstein and Joshua E. Schlieder and Ryan Cloutier and Samuel N. Quinn and Joseph E. Rodriguez and Andrew Vanderburg and Benjamin J. Hord and Dana R. Louie and Colby Ostberg and Stephen R. Kane and Kelsey Hoffman and Jason F. Rowe and Giada N. Arney and Prabal Saxena and Taran Richardson and Matthew S. Clement and Nicholas M. Kartvedt and Fred C. Adams and Marcus Alfred and Travis Berger and Allyson Bieryla and Paul Bonney and Patricia Boyd and Charles Cadieux and Douglas Caldwell and David R. Ciardi and David Charbonneau and Karen A. Collins and Knicole D. Colon and Dennis M. Conti and Mario Di Sora and Shawn Domagal-Goldman and Jessie Dotson and Thomas Fauchez and Maximilian N. Günther and Christina Hedges and Giovanni Isopi and Erika Kohler and Ravi Kopparapu and Veselin B. Kostov and Jeffrey A. Larsen and Eric Lopez and Franco Mallia and Avi Mandell and Susan E. Mullally and Rishi R. Paudel and Brian P. Powell and George R. Ricker and Boris S. Safonov and Richard P. Schwarz and Ramotholo Sefako and Keivan G. Stassun and Robert Wilson and Joshua N. Winn and Roland K. Vanderspek},
journal= {arXiv preprint arXiv:2304.09189},
year = {2023}
}
Comments
Submitted to AAS Journals