PLANETARY CANDIDATES OBSERVED BY KEPLER. III. ANALYSIS OF THE FIRST 16 MONTHS OF DATA

被引：823

作者：

Batalha, Natalie M. ^{[1
,2
]}

Rowe, Jason F. ^{[3
]}

Bryson, Stephen T. ^{[2
]}

Barclay, Thomas ^{[4
]}

Burke, Christopher J. ^{[3
]}

Caldwell, Douglas A. ^{[3
]}

Christiansen, Jessie L. ^{[2
]}

Mullally, Fergal ^{[3
]}

Thompson, Susan E. ^{[3
]}

Brown, Timothy M. ^{[5
]}

Dupree, Andrea K. ^{[6
]}

Fabrycky, Daniel C. ^{[7
]}

Ford, Eric B. ^{[8
]}

Fortney, Jonathan J. ^{[7
]}

Gilliland, Ronald L. ^{[9
]}

Isaacson, Howard ^{[10
]}

Latham, David W. ^{[6
]}

Marcy, Geoffrey W. ^{[10
]}

Quinn, Samuel N. ^{[6
,11
]}

Ragozzine, Darin ^{[6
]}

Shporer, Avi ^{[5
]}

Borucki, William J. ^{[2
]}

Ciardi, David R. ^{[12
]}

Gautier, Thomas N., III ^{[13
]}

Haas, Michael R. ^{[2
]}

Jenkins, Jon M. ^{[3
]}

Koch, David G. ^{[2
]}

Lissauer, Jack J. ^{[2
]}

Rapin, William ^{[2
]}

Basri, Gibor S. ^{[10
]}

Boss, Alan P. ^{[14
]}

Buchhave, Lars A. ^{[15
,16
]}

Carter, Joshua A. ^{[6
]}

Charbonneau, David ^{[6
]}

Christensen-Dalsgaard, Joergen ^{[17
]}

Clarke, Bruce D. ^{[13
]}

Cochran, William D. ^{[18
]}

Demory, Brice-Olivier ^{[19
]}

Desert, Jean-Michel ^{[6
]}

Devore, Edna ^{[20
]}

Doyle, Laurance R. ^{[20
]}

Esquerdo, Gilbert A. ^{[6
]}

Everett, Mark ^{[21
]}

Fressin, Francois ^{[6
]}

Geary, John C. ^{[6
]}

Girouard, Forrest R. ^{[22
]}

Gould, Alan ^{[23
]}

Hall, Jennifer R. ^{[22
]}

Holman, Matthew J. ^{[6
]}

Howard, Andrew W. ^{[10
]}

机构：

[1] San Jose State Univ, Dept Phys & Astron, San Jose, CA 95192 USA

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

[3] NASA, SETI Inst, Ames Res Ctr, Moffett Field, CA 94035 USA

[4] NASA, Bay Area Environm Res Inst, Ames Res Ctr, Moffett Field, CA 94035 USA

[5] Global Telescope Network, Las Cumbres Observ, Goleta, CA 93117 USA

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

[7] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95060 USA

[8] Univ Florida, Dept Astron, Gainesville, FL 32611 USA

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

[10] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[11] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30302 USA

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

[13] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[14] Carnegie Inst Sci, Washington, DC 20015 USA

[15] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

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

[17] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

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

[19] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA

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

[21] Natl Opt Astron Observ, Tucson, AZ 85719 USA

[22] NASA, Orbital Sci Corp, Ames Res Ctr, Moffett Field, CA 94035 USA

[23] Lawrence Hall Sci, Berkeley, CA 94720 USA

[24] Univ Hertfordshire, Ctr Astrophys, Hatfield AL10 9AB, Herts, England

[25] Villanova Univ, Dept Astron & Astrophys, Villanova, PA 19085 USA

[26] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA

[27] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[28] San Diego State Univ, Dept Astron, San Diego, CA 92182 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2013年 / 204卷 / 02期

基金：

美国国家航空航天局;

关键词：

catalogs; eclipses; planetary systems; space vehicles; techniques: photometric; ECLIPSING BINARIES; HABITABLE PLANETS; LOW-MASS; STARS; CATALOG; SEARCH; SYSTEM; GIANT;

D O I：

10.1088/0067-0049/204/2/24

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New transiting planet candidates are identified in 16 months (2009 May-2010 September) of data from the Kepler spacecraft. Nearly 5000 periodic transit-like signals are vetted against astrophysical and instrumental false positives yielding 1108 viable new planet candidates, bringing the total count up to over 2300. Improved vetting metrics are employed, contributing to higher catalog reliability. Most notable is the noise-weighted robust averaging of multiquarter photo-center offsets derived from difference image analysis that identifies likely background eclipsing binaries. Twenty-two months of photometry are used for the purpose of characterizing each of the candidates. Ephemerides (transit epoch, T-0, and orbital period, P) are tabulated as well as the products of light curve modeling: reduced radius (R-P / R-star), reduced semimajor axis (d / R-star), and impact parameter (b). The largest fractional increases are seen for the smallest planet candidates (201% for candidates smaller than 2R(circle plus). compared to 53% for candidates larger than 2R.) and those at longer orbital periods (124% for candidates outside of 50 day orbits versus 86% for candidates inside of 50 day orbits). The gains are larger than expected from increasing the observing window from 13 months (Quarters 1-5) to 16 months (Quarters 1-6) even in regions of parameter space where one would have expected the previous catalogs to be complete. Analyses of planet frequencies based on previous catalogs will be affected by such incompleteness. The fraction of all planet candidate host stars with multiple candidates has grown from 17% to 20%, and the paucity of short-period giant planets in multiple systems is still evident. The progression toward smaller planets at longer orbital periods with each new catalog release suggests that Earth-size planets in the habitable zone are forthcoming if, indeed, such planets are abundant.

引用

页数：21

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