HAT-P-38b: A Saturn-Mass Planet Transiting a Late G Star
B. Sato, J. D. Hartman, G. \'A. Bakos, B. B\'eky, G. Torres, D. W., Latham, G. Kov\'acs, Z. Csubry, K. Penev, R. W. Noyes, L. A. Buchhave, S. N., Quinn, M. Everett, G. A. Esquerdo, D. A. Fischer, A. W. Howard, J. A., Johnson, G. W. Marcy, D. D. Sasselov, T. Szklen\'ar
TL;DR
The paper reports the discovery of HAT-P-38b, a Saturn-mass exoplanet transiting a late G dwarf star, with detailed measurements of its properties, contributing to the understanding of Saturn-like exoplanets.
Contribution
First detailed characterization of HAT-P-38b, a Saturn-mass exoplanet transiting a late G star, including its mass, radius, and orbital parameters.
Findings
HAT-P-38b has a mass of 0.27 MJ and radius of 0.82 RJ.
The planet orbits its star every 4.6404 days in a circular orbit.
The host star is a late G dwarf with solar metallicity.
Abstract
We report the discovery of HAT-P-38b, a Saturn-mass exoplanet transiting the V=12.56 dwarf star GSC 2314-00559 on a P = 4.6404 d circular orbit. The host star is a 0.89Msun late G-dwarf, with solar metallicity, and a radius of 0.92Rsun. The planetary companion has a mass of 0.27MJ, and radius of 0.82RJ. HAT-P-38b is one of the closest planets in mass and radius to Saturn ever discovered.
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