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arXiv · 1201.5075

HAT-P-38b: A Saturn-Mass Planet Transiting a Late G Star

B. Sato·J. D. Hartman·G. Á. Bakos·B. Béky·G. Torres·D. W. Latham·G. Kovács·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. Szklenár·J. Lázár·I. Papp·P. Sári
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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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B. Sato, J. D. Hartman, G. Á. Bakos, B. Béky, G. Torres, D. W. Latham, G. Kovács, 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. Szklenár, J. Lázár, I. Papp, P. Sári. 2012-01-24. HAT-P-38b: A Saturn-Mass Planet Transiting a Late G Star. https://doi.org/10.1093/pasj%2F64.5.97

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