Eighteen Exoplanet Host Stars from the NPOI Data Archive
Ellyn K. Baines, Jeremy Jones, James H. Clark III, Henrique R. Schmitt, Jordan M. Stone
TL;DR
This paper refines stellar and planetary parameters for 18 exoplanet host stars using interferometry and Gaia data, improving mass estimates and habitable zone calculations.
Contribution
It provides updated stellar radii, masses, and habitable zone boundaries for 18 exoplanet host stars using new interferometric and Gaia data.
Findings
Mass changed by more than 10% for 9 stars.
Refined planetary masses and habitable zone calculations.
Updated stellar parameters improve exoplanet characterization.
Abstract
During the course of publishing angular diameters from the Navy Precision Optical Interferometer data archive, we found we had data on 17 confirmed exoplanet host stars and one exoplanet candidate (HD 20902/alpha Per). Here, we update our previously published stellar radii with more precise Gaia parallaxes when available, and use our radius and effective temperature measurements to fit each star's mass and age using MIST models. The mass changed by more than 10% for 9 of the 18 stars. Combining our updated masses, radii, and temperatures, we present refined planetary masses as well as habitable zone calculations.
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