A super-earth-sized planet orbiting in or near the habitable zone around a sun-like star
Article
Article Title | A super-earth-sized planet orbiting in or near the habitable zone around a sun-like star |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Barclay, Thomas (Author), Burke, Christopher J. (Author), Howell, Steve B. (Author), Rowe, Jason F. (Author), Huber, Daniel (Author), Isaacson, Howard (Author), Jenkins, Jon M. (Author), Kolbl, Rea (Author), Marcy, Geoffrey W. (Author), Quintana, Elisa V. (Author), Still, Martin (Author), Twicken, Joseph D. (Author), Bryson, Stephen T. (Author), Borucki, William J. (Author), Caldwell, Douglas A. (Author), Ciardi, David (Author), Clarke, Bruce D. (Author), Christiansen, Jessie L. (Author), Coughlin, Jeffrey L. (Author), Fischer, Debra A. (Author), Li, Jie (Author), Haas, Michael R. (Author), Hunter, Roger (Author), Lissauer, Jack J. (Author), Mullally, Fergal (Author), Sabale, Anima (Author), Seader, Shawn E. (Author), Smith, Jeffrey C. (Author), Tenenbaum, Peter (Author), Kamal Uddin, A. K. M. (Author) and Thompson, Susan E. (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 768 (2), pp. 101-108 |
Article Number | 101 |
Number of Pages | 8 |
Year | 2013 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-637X/768/2/101 |
Web Address (URL) | http://iopscience.iop.org/article/10.1088/0004-637X/768/2/101 |
Abstract | We present the discovery of a super-Earth-sized planet in or near the habitable zone of a Sun-like star. The host is Kepler-69, a 13.7 mag G4V-type star. We detect two periodic sets of transit signals in the 3-year flux time series of Kepler-69, obtained with the Kepler spacecraft. Using the very high precision Kepler photometry, and follow-up observations, our confidence that these signals represent planetary transits is >99.3%. The inner planet, Kepler-69b, has a radius of R⊕ and orbits the host star every 13.7 days. The outer planet, Kepler-69c, is a super-Earth-sized object with a radius of R⊕ and an orbital period of 242.5 days. Assuming an Earth-like Bond albedo, Kepler-69c has an equilibrium temperature of 299 ± 19 K, which places the planet close to the habitable zone around the host star. This is the smallest planet found by Kepler to be orbiting in or near the habitable zone of a Sun-like star and represents an important step on the path to finding the first true Earth analog. |
Keywords | planetary systems; fundamental parameters; stars (Kepler-69, KIC 8692861, KOI-172); statistics; photometric techniques |
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. |
Byline Affiliations | National Aeronautics and Space Administration (NASA), United States |
NASA Ames Research Center, United States | |
University of California, United States | |
SETI Institute, United States | |
Massey University, New Zealand | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4315/a-super-earth-sized-planet-orbiting-in-or-near-the-habitable-zone-around-a-sun-like-star
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