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TOI 694b and TIC 220568520b: Two Low-mass Companions near the Hydrogen-burning Mass Limit Orbiting Sun-like Stars

Mireles, Ismael; Shporer, Avi; Grieves, Nolan; Zhou, George; Guenther , Maximilian N.; Brahm, Rafael; Ziegler, Carl; Stassun, Keivan; Huang, Chelsea X; Nielsen, Louise; Ireland, Michael; Wallace, Alexander


We report the discovery of TOI 694 b and TIC 220568520 b, two low-mass stellar companions in eccentric orbits around metal-rich Sun-like stars, first detected by the Transiting Exoplanet Survey Satellite (TESS). TOI 694 b has an orbital period of 48.05131 +- 0.00019 days and eccentricity of 0.51946 +- 0.00081, and we derive a mass of 89.0 +- 5.3 MJup (0.0849 +- 0.0051 M☉) and radius of 1.111 +- 0.017 RJup (0.1142 +- 0.0017 R☉). TIC 220568520 b has an orbital period of 18.55769 +- 0.00039 days...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: The Astronomical Journal
DOI: 10.3847/1538-3881/aba526
Access Rights: Open Access


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