KELT-10b: The first transiting exoplanet from the KELT-South survey - a hot sub-Jupiter transiting a V = 10.7 early G-star
Article
Article Title | KELT-10b: The first transiting exoplanet from the KELT-South survey - a hot sub-Jupiter transiting a V = 10.7 early G-star |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Kuhn, Rudolf B. (Author), Rodriguez, Joseph E. (Author), Collins, Karen A. (Author), Lund, Michael B. (Author), Siverd, Robert J. (Author), Colon, Knicole D. (Author), Pepper, Joshua (Author), Stassun, Keivan G. (Author), Cargile, Phillip A. (Author), James, David J. (Author), Penev, Kaloyan (Author), Zhou, George, Bayliss, Daniel (Author), Tan, T. G. (Author), Curtis, Ivan A. (Author), Udry, Stephane (Author), Segransan, Damien (Author), Mawet, Dimitri (Author), Dhital, Saurav (Author), Soutter, Jack (Author), Hart, Rhodes (Author), Carter, Brad (Author), Gaudi, B. Scott (Author), Myers, Gordon (Author), Beatty, Thomas G. (Author), Eastman, Jason D. (Author), Reichart, Daniel E. (Author), Haislip, Joshua B. (Author), Kielkopf, John (Author), Bieryla, Allyson (Author), Latham, David W. (Author), Jensen, Eric L. N. (Author), Oberst, Thomas E. (Author) and Stevens, Daniel J. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 459 (4), pp. 4281-4298 |
Number of Pages | 20 |
Year | 2016 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stw880 |
Web Address (URL) | https://academic.oup.com/mnras/article/459/4/4281/2624034 |
Abstract | We report the discovery of KELT-10b, the first transiting exoplanet discovered using the KELT-South telescope. KELT-10b is a highly inflated sub-Jupiter mass planet transiting a relatively bright V = 10.7 star (TYC 8378-64-1), with Teff = 5948 ± 74 K, log g = 4.319-0.030+0.020 and [Fe/H] = 0.09-0.10+0.11, an inferred mass M* = 1.112-0.061+0.055 M⊙ and radius R* = 1.209-0.035+0.047 R⊙. The planet has a radius Rp = 1.399-0.049+0.069 RJ and mass Mp = 0.679-0.038+0.039 MJ. The planet has an eccentricity consistent with zero and a semimajor axis a = 0.052 50-0.000 97+0.000 86 au. The best-fitting linear ephemeris is T0 = 2457 066.720 45 ± 0.000 27 BJDTDB and P = 4.166 2739 ± 0.000 0063 d. This planet joins a group of highly inflated transiting exoplanets with a larger radius and smaller mass than that of Jupiter. The planet, which boasts deep transits of 1.4 per cent, has a relatively high equilibrium temperature of Teq = 1377-23+28 K, assuming zero albedo and perfect heat redistribution. KELT-10b receives an estimated insolation of 0.817-0.054+0.068 × 109 erg s-1 cm-2, which places it far above the insolation threshold above which hot Jupiters exhibit increasing amounts of radius inflation. Evolutionary analysis of the host star suggests that KELT-10b may not survive beyond the current subgiant phase, depending on the rate of in-spiral of the planet over the next few Gyr. The planet transits a relatively bright star and exhibits the third largest transit depth of all transiting exoplanets with V < 11 in the Southern hemisphere, making it a promising candidate for future atmospheric characterization studies. |
Keywords | Planetary systems; Stars: individual: KELT-10; Techniques: photometric; Techniques: radial velocities; Techniques: spectroscopic |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Institution of Origin | University of Southern Queensland |
Funder | National Science Foundation |
Byline Affiliations | South African Astronomical Observatory, South Africa |
Vanderbilt University, United States | |
Las Cumbres Observatory, United States | |
Lehigh University, United States | |
Harvard-Smithsonian Centre for Astrophysics, United States | |
Cerro Tololo Inter-American Observatory, Chile | |
Princeton University, United States | |
Australian National University | |
University of Geneva, Switzerland | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
No affiliation | |
California Institute of Technology (Caltech), United States | |
Boston University, United States | |
Computational Engineering and Science Research Centre | |
Ohio State University, United States | |
American Association of Variable Star Observers, United States | |
Pennsylvania State University, United States | |
University of North Carolina, United States | |
School of Mathematics, Physics and Computing | |
Swarthmore College, United States | |
Westminster College, United States |
https://research.usq.edu.au/item/q3x21/kelt-10b-the-first-transiting-exoplanet-from-the-kelt-south-survey-a-hot-sub-jupiter-transiting-a-v-10-7-early-g-star
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