TOI-561 b: A Low-density Ultra-short-period “Rocky” Planet around a Metal-poor Star

TOI-561 b: A Low-density Ultra-short-period “Rocky” Planet around a Metal-poor Star

TOI-561 is a galactic thick-disk star hosting an ultra-short-period (0.45-day-orbit) planet with a radius of 1.37 R _⊕ , making it one of the most metal-poor ([Fe/H] = −0.41) and oldest (≈10 Gyr) sites where an Earth-sized planet has been found. We present new simultaneous radial velocity (RV) measu...

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Bibliographic Details
Main Authors: Casey L. Brinkman, Lauren M. Weiss, Fei Dai, Daniel Huber, Edwin S. Kite, Diana Valencia, Jacob L. Bean, Corey Beard, Aida Behmard, Sarah Blunt, Madison Brady, Benjamin Fulton, Steven Giacalone, Andrew W. Howard, Howard Isaacson, David Kasper, Jack Lubin, Mason MacDougall, Joseph M. Akana Murphy, Mykhaylo Plotnykov, Alex S. Polanski, Malena Rice, Andreas Seifahrt, Guðmundur Stefánsson, Julian Stürmer
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astronomical Journal
Subjects:
Exoplanets
Extrasolar rocky planets
Super Earths
Exoplanet surface composition
Exoplanet atmospheric composition
Online Access:https://doi.org/10.3847/1538-3881/acad83

Internet

https://doi.org/10.3847/1538-3881/acad83

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