Kepler-9: A System of Multiple Planets Transiting a Sun-Like Star, Confirmed by Timing Variations

被引：301

作者：

Holman, Matthew J. ^{[1
]}

Fabrycky, Daniel C. ^{[1
]}

Ragozzine, Darin ^{[1
]}

Ford, Eric B. ^{[2
]}

Steffen, Jason H. ^{[3
]}

Welsh, William F. ^{[4
]}

Lissauer, Jack J. ^{[5
,6
]}

Latham, David W. ^{[1
]}

Marcy, Geoffrey W. ^{[7
]}

Walkowicz, Lucianne M. ^{[7
]}

Batalha, Natalie M. ^{[8
]}

Jenkins, Jon M. ^{[5
,9
]}

Rowe, Jason F. ^{[5
]}

Cochran, William D. ^{[10
]}

Fressin, Francois ^{[1
]}

Torres, Guillermo ^{[1
]}

Buchhave, Lars A. ^{[1
,11
]}

Sasselov, Dimitar D. ^{[1
]}

Borucki, William J. ^{[5
]}

Koch, David G. ^{[5
]}

Basri, Gibor ^{[7
]}

Brown, Timothy M. ^{[13
,19
]}

Caldwell, Douglas A. ^{[5
,9
]}

Charbonneau, David ^{[1
]}

Dunham, Edward W. ^{[14
]}

Gautier, Thomas N., III ^{[15
]}

Geary, John C. ^{[1
]}

Gilliland, Ronald L. ^{[16
]}

Haas, Michael R. ^{[5
]}

Howell, Steve B. ^{[17
]}

Ciardi, David R. ^{[12
]}

Endl, Michael ^{[10
]}

Fischer, Debra ^{[18
]}

Fueresz, Gabor ^{[1
]}

Hartman, Joel D. ^{[1
]}

Isaacson, Howard ^{[7
]}

Johnson, John A.

MacQueen, Phillip J. ^{[10
]}

Moorhead, Althea V. ^{[2
]}

Morehead, Robert C. ^{[2
]}

Orosz, Jerome A. ^{[4
]}

机构：

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

[2] Univ Florida, Gainesville, FL 32611 USA

[3] Fermilab Ctr Particle Astrophys, Batavia, IL 60510 USA

[4] San Diego State Univ, San Diego, CA 92182 USA

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

[6] Stanford Univ, Stanford, CA 94305 USA

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

[8] San Jose State Univ, San Jose, CA 95192 USA

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

[10] Univ Texas Austin, Austin, TX 78712 USA

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

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

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

[14] Lowell Observ, Flagstaff, AZ 86001 USA

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

[16] Space Telescope Sci Inst, Baltimore, MD 21218 USA

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

[18] Yale Univ, New Haven, CT 06510 USA

[19] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

来源：

SCIENCE | 2010年 / 330卷 / 6000期

关键词：

EXTRA-SOLAR PLANETS; SUPER-EARTHS; SOLID EXOPLANETS; HARPS SEARCH; MASS; RESONANCES; DYNAMICS; MOTION; PERFORMANCE; STABILITY;

D O I：

10.1126/science.1195778

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The Kepler spacecraft is monitoring more than 150,000 stars for evidence of planets transiting those stars. We report the detection of two Saturn-size planets that transit the same Sun-like star, based on 7 months of Kepler observations. Their 19.2- and 38.9-day periods are presently increasing and decreasing at respective average rates of 4 and 39 minutes per orbit; in addition, the transit times of the inner body display an alternating variation of smaller amplitude. These signatures are characteristic of gravitational interaction of two planets near a 2: 1 orbital resonance. Six radial-velocity observations show that these two planets are the most massive objects orbiting close to the star and substantially improve the estimates of their masses. After removing the signal of the two confirmed giant planets, we identified an additional transiting super-Earth-size planet candidate with a period of 1.6 days.

引用

页码：51 / 54

页数：4

共 31 条

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