DISCOVERY AND VALIDATION OF Kepler-452b: A 1.6 Rφ SUPER EARTH EXOPLANET IN THE HABITABLE ZONE OF A G2 STAR

被引：83

作者：

Jenkins, Jon M. ^{[1
]}

Twicken, Joseph D. ^{[1
,2
]}

Batalha, Natalie M. ^{[1
]}

Caldwell, Douglas A. ^{[1
,2
]}

Cochran, William D. ^{[3
,4
]}

Endl, Michael ^{[3
,4
]}

Latham, David W. ^{[5
]}

Esquerdo, Gilbert A. ^{[5
]}

Seader, Shawn ^{[1
,2
]}

Bieryla, Allyson ^{[5
]}

Petigura, Erik ^{[6
]}

Ciardi, David R. ^{[7
]}

Marcy, Geoffrey W. ^{[6
]}

Isaacson, Howard ^{[6
]}

Huber, Daniel ^{[2
,8
,9
]}

Rowe, Jason F. ^{[1
,2
]}

Torres, Guillermo ^{[5
]}

Bryson, Stephen T. ^{[1
]}

Buchhave, Lars ^{[5
,10
]}

Ramirez, Ivan ^{[3
,4
]}

Wolfgang, Angie ^{[11
]}

Li, Jie ^{[1
,2
]}

Campbell, Jennifer R. ^{[12
]}

Tenenbaum, Peter ^{[1
,2
]}

Sanderfer, Dwight ^{[1
]}

Henze, Christopher E. ^{[1
]}

Catanzarite, Joseph H. ^{[1
,2
]}

Gilliland, Ronald L. ^{[13
]}

Borucki, William J. ^{[1
]}

机构：

[1] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[2] SETI Inst, Mountain View, CA 94043 USA

[3] Univ Texas Austin, McDonald Observ, Austin, TX 78712 USA

[4] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[5] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[6] Univ Calif Berkeley, Berkeley, CA 94720 USA

[7] CALTECH, NASA, Exoplanet Sci Inst, Pasadena, CA 91125 USA

[8] Univ Sydney, Sch Phys, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia

[9] Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, DK-8000 Aarhus C, Denmark

[10] Univ Copenhagen, Nat Hist Museum Denmark, Ctr Star & Planet Format, DK-1350 Copenhagen, Denmark

[11] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[12] NASA, Wyle Labs, Ames Res Ctr, Moffett Field, CA 94035 USA

[13] Penn State Univ, Ctr Exoplanets & Habitable Worlds, University Pk, PA 16802 USA

来源：

ASTRONOMICAL JOURNAL | 2015年 / 150卷 / 02期

基金：

美国国家科学基金会;

关键词：

methods: statistical; planets and satellites: detection; stars: fundamental parameters; stars:; individual; (Kepler-452b; KIC; 8311864; KOI7016.01); POTENTIAL TRANSIT SIGNALS; FALSE POSITIVES; SOPHIE VELOCIMETRY; PLANETARY SYSTEM; BLEND SCENARIOS; HARPS SEARCH; CANDIDATES; COMPANION; IDENTIFICATION; QUARTERS;

D O I：

10.1088/0004-6256/150/2/56

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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-circle plus every 384.843 (+0.007)(-0.012) days, the longest orbital period for a small (R-P < 2 R-circle plus) 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-circle dot and an estimated age of similar to 6 Gyr. Thus, Kepler-452b has likely always been in the habitable zone and should remain there for another similar to 3 Gyr.

引用

页数：19

共 89 条

[1] Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf
Anglada-Escude, G.
Arriagada, P.
Tuomi, M.
Zechmeister, M.
Jenkins, S.
Ofir, A.
Dreizler, S.
Gerlach, E.
Marvin, C. J.
Reiners, A.
Jeffers, S. V.
Butler, R. P.
Vogt, S. S.
Amado, P. J.
Rodriguez-Lopez, C.
Berdinas, Z. M.
Morin, J.
Crane, J. D.
Shectman, S. A.
Thompson, I. B.
Diaz, M.
Rivera, E.
Sarmiento, L. F.
Jones, H. R. A.
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 443 (01) : L89 - L93
[2] A dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zone
Anglada-Escude, Guillem
Tuomi, Mikko
Gerlach, Enrico
Barnes, Rory
Heller, Rene
Jenkins, James S.
Wende, Sebastian
Vogt, Steven S.
Butler, R. Paul
Reiners, Ansgar
Jones, Hugh R. A.
[J]. ASTRONOMY & ASTROPHYSICS, 2013, 556
[3] EXOPLANET CHARACTERIZATION BY PROXY: A TRANSITING 2.15 R⊕ PLANET NEAR THE HABITABLE ZONE OF THE LATE K DWARF KEPLER-61
Ballard, Sarah
Charbonneau, David
Fressin, Francois
Torres, Guillermo
Irwin, Jonathan
Desert, Jean-Michel
Newton, Elisabeth
Mann, Andrew W.
Ciardi, David R.
Crepp, Justin R.
Henze, Christopher E.
Bryson, Stephen T.
Howell, Steven B.
Horch, Elliott P.
Everett, Mark E.
Shporer, Avi
[J]. ASTROPHYSICAL JOURNAL, 2013, 773 (02)
[4] A sub-Mercury-sized exoplanet
Barclay, Thomas
Rowe, Jason F.
Lissauer, Jack J.
Huber, Daniel
Fressin, Francois
Howell, Steve B.
Bryson, Stephen T.
Chaplin, William J.
Deseret, Jean-Michel
Lopez, Eric D.
Marcy, Geoffrey W.
Mullally, Fergal
Ragozzine, Darin
Torres, Guillermo
Adams, Elisabeth R.
Agol, Eric
Barrado, David
Basu, Sarbani
Bedding, Timothy R.
Buchhave, Lars A.
Charbonneau, David
Christiansen, Jessie L.
Christensen-Dalsgaard, Jorgen
Ciardi, David
Cochran, William D.
Dupree, Andrea K.
Elsworth, Yvonne
Everett, Mark
Fischer, Debra A.
Ford, Eric B.
Fortney, Jonathan J.
Geary, John C.
Haas, Michael R.
Handberg, Rasmus
Hekker, Saskia
Henze, Christopher E.
Horch, Elliott
Howard, Andrew W.
Hunter, Roger C.
Isaacson, Howard
Jenkins, Jon M.
Karoff, Christoffer
Kawaler, Steven D.
Kjeldsen, Hans
Klaus, Todd C.
Latham, David W.
Li, Jie
Lillo-Box, Jorge
Lund, Mikkel N.
Lundkvist, Mia
[J]. NATURE, 2013, 494 (7438) : 452 - 454
[5] Identification of the ogle-2003-BLG-235/MOA-2003-BLG-53 planetary host star
Bennett, David P.
Anderson, Jay
Bond, Ian A.
Udalski, Andrzej
Gould, Andrew
[J]. ASTROPHYSICAL JOURNAL, 2006, 647 (02) : L171 - L174
[6] The HARPS search for southern extra-solar planets XXXIV. A planetary system around the nearby M dwarf GJ 163, with a super-Earth possibly in the habitable zone
Bonfils, X.
Lo Curto, G.
Correia, A. C. M.
Laskar, J.
Udry, S.
Delfosse, X.
Forveille, T.
Astudillo-Defru, N.
Benz, W.
Bouchy, F.
Gillon, M.
Hebrard, G.
Lovis, C.
Mayor, M.
Moutou, C.
Naef, D.
Neves, V.
Pepe, F.
Perrier, C.
Queloz, D.
Santos, N. C.
Segransan, D.
[J]. ASTRONOMY & ASTROPHYSICS, 2013, 556
[7] Kepler-62: A Five-Planet System with Planets of 1.4 and 1.6 Earth Radii in the Habitable Zone
Borucki, William J.
Agol, Eric
Fressin, Francois
Kaltenegger, Lisa
Rowe, Jason
Isaacson, Howard
Fischer, Debra
Batalha, Natalie
Lissauer, Jack J.
Marcy, Geoffrey W.
Fabrycky, Daniel
Desert, Jean-Michel
Bryson, Stephen T.
Barclay, Thomas
Bastien, Fabienne
Boss, Alan
Brugamyer, Erik
Buchhave, Lars A.
Burke, Chris
Caldwell, Douglas A.
Carter, Josh
Charbonneau, David
Crepp, Justin R.
Christensen-Dalsgaard, Jorgen
Christiansen, Jessie L.
Ciardi, David
Cochran, William D.
DeVore, Edna
Doyle, Laurance
Dupree, Andrea K.
Endl, Michael
Everett, Mark E.
Ford, Eric B.
Fortney, Jonathan
Gautier, Thomas N., III
Geary, John C.
Gould, Alan
Haas, Michael
Henze, Christopher
Howard, Andrew W.
Howell, Steve B.
Huber, Daniel
Jenkins, Jon M.
Kjeldsen, Hans
Kolbl, Rea
Kolodziejczak, Jeffery
Latham, David W.
Lee, Brian L.
Lopez, Eric
Mullally, Fergal
[J]. SCIENCE, 2013, 340 (6132) : 587 - 590
[8] Kepler Planet-Detection Mission: Introduction and First Results
Borucki, William J.
Koch, David
Basri, Gibor
Batalha, Natalie
Brown, Timothy
Caldwell, Douglas
Caldwell, John
Christensen-Dalsgaard, Jorgen
Cochran, William D.
DeVore, Edna
Dunham, Edward W.
Dupree, Andrea K.
Gautier, Thomas N., III
Geary, John C.
Gilliland, Ronald
Gould, Alan
Howell, Steve B.
Jenkins, Jon M.
Kondo, Yoji
Latham, David W.
Marcy, Geoffrey W.
Meibom, Soren
Kjeldsen, Hans
Lissauer, Jack J.
Monet, David G.
Morrison, David
Sasselov, Dimitar
Tarter, Jill
Boss, Alan
Brownlee, Don
Owen, Toby
Buzasi, Derek
Charbonneau, David
Doyle, Laurance
Fortney, Jonathan
Ford, Eric B.
Holman, Matthew J.
Seager, Sara
Steffen, Jason H.
Welsh, William F.
Rowe, Jason
Anderson, Howard
Buchhave, Lars
Ciardi, David
Walkowicz, Lucianne
Sherry, William
Horch, Elliott
Isaacson, Howard
Everett, Mark E.
Fischer, Debra
[J]. SCIENCE, 2010, 327 (5968) : 977 - 980
[9] SOPHIE velocimetry of Kepler transit candidates III. KOI-423b: an 18 MJup transiting companion around an F7IV star
Bouchy, F.
Bonomo, A. S.
Santerne, A.
Moutou, C.
Deleuil, M.
Diaz, R. F.
Eggenberger, A.
Ehrenreich, D.
Gry, C.
Guillot, T.
Havel, M.
Hebrard, G.
Udry, S.
[J]. ASTRONOMY & ASTROPHYSICS, 2011, 533
[10] KEPLER INPUT CATALOG: PHOTOMETRIC CALIBRATION AND STELLAR CLASSIFICATION
Brown, Timothy M.
Latham, David W.
Everett, Mark E.
Esquerdo, Gilbert A.
[J]. ASTRONOMICAL JOURNAL, 2011, 142 (04)

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