HATS-25b through HATS-30b: a half-dozen new inflated transiting hot jupiters from the HATSouth survey
Article
Article Title | HATS-25b through HATS-30b: a half-dozen new inflated transiting hot jupiters from the HATSouth survey |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Espinoza, N. (Author), Bayliss, D. (Author), Hartman, J. D. (Author), Bakos, G. A. (Author), Jordan, A. (Author), Zhou, G. (Author), Mancini, L. (Author), Brahm, R. (Author), Ciceri, S. (Author), Bhatti, W. (Author), Csubry, Z. (Author), Rabus, M. (Author), Penev, K. (Author), Bento, J. (Author), de Val-Borro, M. (Author), Henning, T. (Author), Schmidt, B. (Author), Suc, V. (Author), Wright, D. J. (Author), Tinney, C. G. (Author), Tan, T. G. (Author) and Noyes, R. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 152 (4), pp. 1-18 |
Article Number | 108 |
Number of Pages | 18 |
Year | 2016 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/0004-6256/152/4/108 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/0004-6256/152/4/108 |
Abstract | We report six new inflated hot Jupiters (HATS-25b through HATS-30b) discovered using the HATSouth global network of automated telescopes. The planets orbit stars with V magnitudes in the range of similar to 12-14 and have masses in the largely populated 0.5M(J)-0.7M(J) region of parameter space but span a wide variety of radii, from 1.17R(J) to 1.75R(J). HATS-25b, HATS-28b, HATS-29b, and HATS-30b are typical inflated hot Jupiters (R-p = 1.17-1.26R(J)) orbiting G-type stars in short period (P = 3.2-4.6 days) orbits. However, HATS-26b (R-p = 1.75R(J), P = 3.3024 days) and HATS-27b (R-p = 1.50R(J), P = 4.6370 days) stand out as highly inflated planets orbiting slightly evolved F stars just after and in the turn-off points, respectively, which are among the least dense hot Jupiters, with densities of 0.153 g cm(-3) and 0.180 g cm(-3), respectively. All the presented exoplanets but HATS-27b are good targets for future atmospheric characterization studies, while HATS-27b is a prime target for Rossiter-McLaughlin monitoring in order to determine its spin-orbit alignment given the brightness (V = 12.8) and stellar rotational velocity (v sin i approximate to 9.3 km s(-1)) of the host star. These discoveries significantly increase the number of inflated hot Jupiters known, contributing to our understanding of the mechanism(s) responsible for hot Jupiter inflation. |
Keywords | stars, HATS-25, HATS-26, HATS-27, HATS-28, HATS-29, HATS-30 |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | For access to this article, please click on the URL link provided. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Pontifical Catholic University of Chile, Chile |
University of Geneva, Switzerland | |
Princeton University, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Max Planck Society, Germany | |
Australian National University | |
University of New South Wales | |
Perth Exoplanet Survey Telescope Observatory, Australia |
https://research.usq.edu.au/item/q53qv/hats-25b-through-hats-30b-a-half-dozen-new-inflated-transiting-hot-jupiters-from-the-hatsouth-survey
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