HATS-37Ab and HATS-38b: Two Transiting Hot Neptunes in the Desert
Article
Article Title | HATS-37Ab and HATS-38b: Two Transiting Hot Neptunes in the Desert |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Jordan, A. (Author), Bakos, G. A. (Author), Bayliss, D. (Author), Bento, J. (Author), Bhatti, W. (Author), Brahm, R. (Author), Csubry, Z. (Author), Espinoza, N. (Author), Hartman, J. D. (Author), Henning, Th. (Author), Mancini, L. (Author), Penev, K. (Author), Rabus, M. (Author), Sarkis, P. (Author), Suc, V. (Author), de Val-Borro, M. (Author), Zhou, G. (Author), Butler, R. P. (Author), Teske, J. (Author), Crane, J. (Author), Shectman, S. (Author), Tan, T. G. (Author), Thompson, I. (Author), Wallace, J. J. (Author), Lazar, J. (Author), Papp, I. (Author) and Sari, P. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 160 (5), pp. 1-14 |
Article Number | 222 |
Number of Pages | 14 |
Year | 2020 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/aba530 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/aba530 |
Abstract | We report the discovery of two transiting Neptunes by the HATSouth survey. The planet HATS-37Ab has a mass of 0.099 ± 0.042 MJ (31.5 ± 13.4 M) and a radius of 0.606 ± 0.016 RJ, and is on a P = 4.3315 day orbit around a V = 12.266 ± 0.030 mag, 0.843-+0.0120.017 M☉ star with a radius of 0.877-+0.0120.019 R☉. We also present evidence that the star HATS-37A has an unresolved stellar companion HATS-37B, with a photometrically estimated mass of 0.654 ± 0.033 M☉. The planet HATS-38b has a mass of 0.074 ± 0.011 MJ (23.5 ± 3.5 M) and a radius of 0.614 ± 0.017 RJ, and is on a P = 4.3750 day orbit around a V = 12.411 ± 0.030 mag, 0.890-+0.0120.016 M☉ star with a radius of 1.105 ± 0.016 R☉. Both systems appear to be old, with isochrone-based ages of 11.46-+1.450.79 Gyr, and 11.89 ± 0.60 Gyr, respectively. Both HATS-37Ab and HATS-38b lie in the Neptune desert and are thus examples of a population with a low occurrence rate. They are also among the lowest-mass planets found from ground-based wide-field surveys to date. |
Keywords | Exoplanets; Hot Neptunes; Astrophysics - Earth and 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 | Adolfo Ibanez University, Chile |
Princeton University, United States | |
University of Warwick, United Kingdom | |
Australian National University | |
Space Telescope Science Institute, United States | |
Max Planck Society, Germany | |
University of Texas at Dallas, United States | |
Las Cumbres Observatory, United States | |
NASA Goddard Space Flight Center, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Carnegie Institution of Washington, United States | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
Carnegie Observatories Pasadena, United States | |
Hungarian Astronomical Association, Hungary |
https://research.usq.edu.au/item/q6x46/hats-37ab-and-hats-38b-two-transiting-hot-neptunes-in-the-desert
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