K2-114b and K2-115b: Two Transiting Warm Jupiters
Article
Article Title | K2-114b and K2-115b: Two Transiting Warm Jupiters |
---|---|
ERA Journal ID | 1048 |
Article Category | Article |
Authors | Shporer, Avi (Author), Zhou, George (Author), Fulton, Benjamin J. (Author), Vanderburg, Andrew (Author), Espinoza, Nestor (Author), Collins, Karen (Author), Ciardi, David (Author), Bayliss, Daniel (Author), Armstrong, James D. (Author), Bento, Joao (Author), Bouchy, Francois (Author), Cochran, William D. (Author), Collier Cameron, Andrew (Author), Colon, Knicole (Author), Crossfield, Ian (Author), Dragomir, Diana (Author), Howard, Andrew W. (Author), Howell, Steve B. (Author), Isaacson, Howard (Author), Kielkopf, John F. (Author), Murgas, Felipe (Author), Sefako, Ramotholo (Author), Sinukoff, Evan (Author), Siverd, Robert (Author) and Udry, Stephane (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 154 (5), pp. 1-11 |
Article Number | 188 |
Number of Pages | 11 |
Year | 2017 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/aa8bb9 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/aa8bb9 |
Abstract | We report the first results from a search for transiting warm Jupiter exoplanets - gas giant planets receiving stellar irradiation below about 108 erg s-1 cm-2, equivalent to orbital periods beyond about 10 days around Sun-like stars. We have discovered two transiting warm Jupiter exoplanets initially identified as transiting candidates in K2 photometry. K2-114b has a mass of , a radius of , and an orbital period of 11.4 days. K2-115b has a mass of , a radius of , and an orbital period of 20.3 days. Both planets are among the longest-period transiting gas giant planets with a measured mass, and they are orbiting relatively old host stars. Both planets are not inflated, as their radii are consistent with theoretical expectations. Their position in the planet radius-stellar irradiation diagram is consistent with the scenario where the radius-irradiation correlation levels off below about 108 erg s-1 cm-2, suggesting that for warm Jupiters stellar irradiation does not play a significant role in determining the planet radius. We also report our identification of another K2 transiting warm Jupiter candidate, EPIC 212504617, as a false positive. |
Keywords | stars: individual (K2-114; EPIC 211418729; K2-115; EPIC 211442297; EPIC 212504617); Astrophysics - Earth and Planetary 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 | California Institute of Technology (Caltech), United States |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Hawaii, United States | |
Pontifical Catholic University of Chile, Chile | |
Vanderbilt University, United States | |
National Aeronautics and Space Administration (NASA), United States | |
University of Geneva, Switzerland | |
Australian National University | |
University of Texas at Austin, United States | |
University of St Andrews, United Kingdom | |
NASA Goddard Space Flight Center, United States | |
University of California, United States | |
Massachusetts Institute of Technology, United States | |
School of Mathematics, Physics and Computing | |
Institute of Astrophysics of the Canary Islands, Spain | |
South African Astronomical Observatory, South Africa | |
Las Cumbres Observatory, United States |
https://research.usq.edu.au/item/q6x62/k2-114b-and-k2-115b-two-transiting-warm-jupiters
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