Metallicities and Refined Stellar Parameters for 52 Cool Dwarfs with Transiting Planets and Planet Candidates

• DOI: 10.3847/1538-4365/ad2c0c
• Publication Date: 2024-03-28T09:53:16Z
• Authors: Rebecca Gore; Steven Giacalone; Courtney D. Dressing; Emma V. Turtelboom; Ashley Schroeder; Charles D. Forten...; Kevin K. Hardegre...; Jon K. Zink; Andrew W. Mayo; Joshua E. Schlieder; Jessie L. Christi...
• Keywords: QB460-466; Astrophysics - Solar and Stellar Astrophysics; Stellar properties; Exoplanets; Low mass stars; M dwarf stars; Astrophysics; Exoplanet systems; Spectroscopy; Astrophysics - Earth and Planetary Astrophysics

Abstract We collected near-infrared spectra of 65 cool stars with the NASA Infrared Telescope Facility and analyzed them to calculate accurate metallicities stellar parameters. The sample 55 M dwarfs 10 K includes 25 systems confirmed planets 27 planet candidates identified by K2 TESS missions. Three planetary host multiple two candidate candidates. Using new parameters, we refit light curves updated properties. In general, our properties are more precise than those previously reported agree well in literature. Lastly, briefly examine relationship between mass, metallicity, system for targets characterized planet-hosting low-mass stars. provide spectra, fits community, expanding available which investigate correlations