Discovery and validation of Kepler-452b: A 1.6 R⊕; super earth exoplanet in the habitable zone of a G2 star
Article
Article Title | Discovery and validation of Kepler-452b: A 1.6 R⊕; super earth exoplanet in the habitable zone of a G2 star |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Jenkins, Jon M. (Author), Twicken, Joseph D. (Author), Batalha, Natalie M. (Author), Caldwell, Douglas A. (Author), Cochran, William D. (Author), Endl, Michael (Author), Latham, David W. (Author), Esquerdo, Gilbert A. (Author), Seader, Shawn (Author), Bieryla, Allyson (Author), Petigura, Erik (Author), Ciardi, David R. (Author), Marcy, Geoffrey W. (Author), Isaacson, Howard (Author), Huber, Daniel (Author), Rowe, Jason F. (Author), Torres, Guillermo (Author), Bryson, Stephen T. (Author), Buchhave, Lars (Author), Ramirez, Ivan (Author), Wolfgang, Angie (Author), Li, Jie (Author), Campbell, Jennifer R. (Author), Tenenbaum, Peter (Author), Sanderfer, Dwight (Author), Henze, Christopher E. (Author), Catanzarite, Joseph H. (Author), Gilliland, Ronald L. (Author) and Borucki, William J. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 150 (2), pp. 56-74 |
Article Number | 56 |
Number of Pages | 19 |
Year | 2015 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-6256/150/2/56 |
Web Address (URL) | http://iopscience.iop.org/article/10.1088/0004-6256/150/2/56 |
Abstract | We report on the discovery and validation of Kepler-452b, a transiting planet identified by a search through the 4 years of data collected by NASA's Kepler Mission. This possibly rocky planet orbits its G2 host star every days, the longest orbital period for a small ( ) transiting exoplanet to date. The likelihood that this planet has a rocky composition lies between 49% and 62%. The star has an effective temperature of 5757 ± 85 K and a of 4.32 ± 0.09. At a mean orbital separation of AU, this small planet is well within the optimistic habitable zone of its star (recent Venus/early Mars), experiencing only 10% more flux than Earth receives from the Sun today, and slightly outside the conservative habitable zone (runaway greenhouse/maximum greenhouse). The star is slightly larger and older than the Sun, with a present radius of and an estimated age of ∼6 Gyr. Thus, Kepler-452b has likely always been in the habitable zone and should remain there for another ∼3 Gyr. |
Keywords | statistical methods; planets and satellites detection; stars: fundamental parameters; stars; Kepler-452b; KIC 8311864; KOI7016.01 |
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 | National Aeronautics and Space Administration (NASA), United States |
NASA Ames Research Center, United States | |
University of Texas at Austin, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of California, United States | |
University of Sydney | |
University of Texas, United States | |
Pennsylvania State University, United States |
https://research.usq.edu.au/item/q4353/discovery-and-validation-of-kepler-452b-a-1-6-r-super-earth-exoplanet-in-the-habitable-zone-of-a-g2-star
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