HATS-6b: A Warm Saturn Transiting an Early M Dwarf Star, and a Set of Empirical Relations for Characterizing K and M Dwarf Planet Hosts
Article
Article Title | HATS-6b: A Warm Saturn Transiting an Early M Dwarf Star, and a Set of Empirical Relations for Characterizing K and M Dwarf Planet Hosts |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Hartman, J. D. (Author), Bayliss, D. (Author), Brahm, R. (Author), Bakos, G. A. (Author), Mancini, L. (Author), Jordan, A. (Author), Penev, K. (Author), Rabus, M. (Author), Zhou, G. (Author), Butler, R. P. (Author), Espinoza, N. (Author), de Val-Borro, M. (Author), Bhatti, W. (Author), Csubry, Z. (Author), Ciceri, S. (Author), Henning, T. (Author), Schmidt, B. (Author), Arriagada, P. (Author), Shectman, S. (Author), Crane, J. (Author), Thompson, I. (Author), Suc, V. (Author), Csak, B. (Author), Tan, T. G. (Author), Noyes, R. W. (Author), Lazar, J. (Author), Papp, I. (Author) and Sari, P. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 149 (5), pp. 1-20 |
Article Number | 166 |
Number of Pages | 20 |
Year | 2015 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-6256/149/5/166 |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/0004-6256/149/5/166 |
Abstract | We report the discovery by the HATSouth survey of HATS-6b, an extrasolar planet transiting a V = 15.2 mag, i = 13.7 mag M1V star with a mass of 0.57 and a radius of 0.57 . HATS-6b has a period of P = 3.3253 d, mass of = 0.32 , radius of = 1.00 , and zero-albedo equilibrium temperature of = 712.8 ±5.1 K. HATS-6 is one of the lowest mass stars known to host a close-in gas giant planet, and its transits are among the deepest of any known transiting planet system. We discuss the follow-up opportunities afforded by this system, noting that despite the faintness of the host star, it is expected to have the highest K-band S/N transmission spectrum among known gas giant planets with K. In order to characterize the star we present a new set of empirical relations between the density, radius, mass, bolometric magnitude, and V-, J-, H- and K-band bolometric corrections for main sequence stars with , or spectral types later than K5. These relations are calibrated using eclipsing binary components as well as members of resolved binary systems. We account for intrinsic scatter in the relations in a self-consistent manner. We show that from the transit-based stellar density alone it is possible to measure the mass and radius of a ∼0.6 star to ∼7 and ∼2% precision, respectively. Incorporating additional information, such as the color, or an absolute magnitude, allows the precision to be improved by up to a factor of two. |
Keywords | planetary systems; stars: individual: HATS-6; techniques: photometric; techniques: spectroscopic; Astrophysics - Earth; Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Princeton University, United States |
Australian National University | |
Pontifical Catholic University of Chile, Chile | |
Max Planck Society, Germany | |
Carnegie Institution of Washington, United States | |
Carnegie Observatories Pasadena, United States | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Hungarian Astronomical Association, Hungary |
https://research.usq.edu.au/item/q6x3z/hats-6b-a-warm-saturn-transiting-an-early-m-dwarf-star-and-a-set-of-empirical-relations-for-characterizing-k-and-m-dwarf-planet-hosts
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