HATS-50b through HATS-53b: four transiting hot Jupiters orbiting G-type stars discovered by the HATSouth survey
Article
Article Title | HATS-50b through HATS-53b: four transiting hot Jupiters orbiting G-type stars discovered by the HATSouth survey |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Henning, Th. (Author), Mancini, L. (Author), Sarkis, P. (Author), Bakos, G. A. (Author), Hartman, J. D. (Author), Bayliss, D. (Author), Bento, J. (Author), Bhatti, W. (Author), Brahm, R. (Author), Ciceri, S. (Author), Csubry, Z. (Author), de Val-Borro, M. (Author), Espinoza, N. (Author), Fulton, B. J. (Author), Howard, A. W. (Author), Isaacson, H. T. (Author), Jordan, A. (Author), Marcy, G. W. (Author), Penev, K. (Author), Rabus, M. (Author), Suc, V. (Author), Tan, T. G. (Author), Tinney, C. G. (Author), Wright, D. J. (Author), Zhou, G. (Author), Durkan, S. (Author), Lazar, J. (Author), Papp, I. (Author) and Sari, P. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 155 (2), pp. 1-20 |
Article Number | 79 |
Number of Pages | 20 |
Year | 2018 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/aaa254 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/aaa254/ |
Abstract | We report the discovery of four close-in transiting exoplanets (HATS-50b through HATS-53b), discovered using the HATSouth three-continent network of homogeneous and automated telescopes. These new exoplanets belong to the class of hot Jupiters and orbit G-type dwarf stars, with brightness in the range V = 12.5-14.0 mag. While HATS-53 has many physical characteristics similar to the Sun, the other three stars appear to be metal-rich ([Fe/H]= 0.2-0.3), larger, and more massive. Three of the new exoplanets, namely HATS-50b, HATS-51b, and HATS-53b, have low density (HATS-50b: 0.39 +/- 0.10 M-J, 1.130 +/- 0.075 R-J; HATS-51b: 0.768 +/- 0.045 M-J, 1.41 +/- 0.19 R-J; HATS-53b: 0.595 +/- 0.089 M-J, 1.340 +/- 0.056 R-J) and similar orbital periods (3.8297 days, 3.3489 days, 3.8538 days, respectively). Instead, HATS-52b is more dense (mass 2.24. +/- 0.15 M-J and radius 1.382 +/- 0.086 R-J) and has a shorter orbital period (1.3667 days). It also receives an intensive radiation from its parent star and, consequently, presents a high equilibrium temperature (T-eq = 1834 +/- 73 K). HATS-50 shows a marginal additional transit feature consistent with an ultra-short-period hot super Neptune (upper mass limit 0.16 M-J), which will be able to be confirmed with TESS photometry. |
Keywords | stars, HATS-50, HATS-51, HATS-52, HATS-53, techniques, photometric |
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 | Max Planck Society, Germany |
Princeton University, United States | |
University of Warwick, United Kingdom | |
Australian National University | |
Millennium Institute of Astrophysics, Chile | |
Stockholm University, Sweden | |
California Institute of Technology (Caltech), United States | |
University of California, United States | |
Pontifical Catholic University of Chile, Chile | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
University of New South Wales | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Queen's University Belfast, United Kingdom | |
Hungarian Astronomical Association, Hungary |
https://research.usq.edu.au/item/q53qx/hats-50b-through-hats-53b-four-transiting-hot-jupiters-orbiting-g-type-stars-discovered-by-the-hatsouth-survey
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