Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1507.06723)
· On-line Data
· References in the article
· Citations to the Article (66) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (22)
· Associated Articles
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Discovery and Validation of Kepler-452b: A 1.6 R Super Earth Exoplanet in the Habitable Zone of a G2 Star
Authors:
Jenkins, Jon M.; Twicken, Joseph D.; Batalha, Natalie M.; Caldwell, Douglas A.; Cochran, William D.; Endl, Michael; Latham, David W.; Esquerdo, Gilbert A.; Seader, Shawn; Bieryla, Allyson; Petigura, Erik; Ciardi, David R.; Marcy, Geoffrey W.; Isaacson, Howard; Huber, Daniel; Rowe, Jason F.; Torres, Guillermo; Bryson, Stephen T.; Buchhave, Lars; Ramirez, Ivan; Wolfgang, Angie; Li, Jie; Campbell, Jennifer R.; Tenenbaum, Peter; Sanderfer, Dwight; Henze, Christopher E.; Catanzarite, Joseph H.; Gilliland, Ronald L.; Borucki, William J.
Affiliation:
AA(NASA Ames Research Center, Moffett Field, CA 94035, USA 0000-0002-4715-9460), AB(NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA), AC(NASA Ames Research Center, Moffett Field, CA 94035, USA), AD(NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA), AE(McDonald Observatory & Department of Astronomy, University of Texas at Austin 2515 Speedway, Stop 1402, Austin, TX 78712, USA), AF(McDonald Observatory & Department of Astronomy, University of Texas at Austin 2515 Speedway, Stop 1402, Austin, TX 78712, USA), AG(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA 0000-0001-9911-7388), AH(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA), AI(NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA), AJ(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA), AK(University of California, Berkeley, CA 94720, USA), AL(NASA Exoplanet Science Institute/Caltech Pasadena, CA 91125, USA), AM(University of California, Berkeley, CA 94720, USA), AN(University of California, Berkeley, CA 94720, USA), AO(SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA ; Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006, Australia ; Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark), AP(NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA 0000-0002-5904-1865), AQ(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA), AR(NASA Ames Research Center, Moffett Field, CA 94035, USA), AS(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA; Centre for Star and Planet Formation, Natural History Museum of Denmark, University of Copenhagen, DK-1350 Copenhagen, Denmark 0000-0003-1605-5666), AT(McDonald Observatory & Department of Astronomy, University of Texas at Austin 2515 Speedway, Stop 1402, Austin, TX 78712, USA 0000-0003-1268-0077), AU(Department of Astronomy & Astrophysics, UC Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA 0000-0003-2862-6278), AV(NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA), AW(Wyle Labs/NASA Ames Research Center, Moffett Field, CA 94035, USA), AX(NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA), AY(NASA Ames Research Center, Moffett Field, CA 94035, USA), AZ(NASA Ames Research Center, Moffett Field, CA 94035, USA), BA(NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA), BB(Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, University Park, PA 16802, USA 0000-0002-1554-5578), BC(NASA Ames Research Center, Moffett Field, CA 94035, USA)
Publication:
The Astronomical Journal, Volume 150, Issue 2, article id. 56, 19 pp. (2015). (AJ Homepage)
Publication Date:
08/2015
Origin:
IOP
Astronomy Keywords:
methods: statistical, planets and satellites: detection, stars: fundamental parameters, stars: individual: Kepler-452b, KIC 8311864, KOI7016.01
DOI:
10.1088/0004-6256/150/2/56
Bibliographic Code:
2015AJ....150...56J

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 {1.63}-0.20+0.23 {R}\oplus planet orbits its G2 host star every {384.843}-0.012+0.007 days, the longest orbital period for a small ({R}{{P}}< 2 {R}\oplus ) 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 {log}g of 4.32 ± 0.09. At a mean orbital separation of {1.046}-0.015+0.019 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 {1.11}-0.09+0.15 {R} 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.

Associated Articles

Main Paper     Press Release    


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints