HAT-P-25b: A HOT-JUPITER TRANSITING A MODERATELY FAINT G STAR

被引：27

作者：

Quinn, S. N. ^{[1
]}

Bakos, G. A. ^{[1
]}

Hartman, J. ^{[1
]}

Torres, G. ^{[1
]}

Kovacs, G. ^{[2
]}

Latham, D. W. ^{[1
]}

Noyes, R. W. ^{[1
]}

Fischer, D. A. ^{[3
]}

Johnson, J. A. ^{[4
]}

Marcy, G. W. ^{[5
]}

Howard, A. W. ^{[5
]}

Szentgyorgyi, A. ^{[1
]}

Furesz, G. ^{[1
]}

Buchhave, L. A. ^{[1
,6
]}

Beky, B. ^{[1
]}

Sasselov, D. D. ^{[1
]}

Stefanik, R. P. ^{[1
]}

Perumpilly, G. ^{[1
,7
]}

Everett, M. ^{[1
]}

Lazar, J. ^{[8
]}

Papp, I. ^{[8
]}

Sari, P. ^{[8
]}

机构：

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

[2] Konkoly Observ Budapest, Budapest, Hungary

[3] Yale Univ, Dept Astron, New Haven, CT 06511 USA

[4] CALTECH, Dept Astrophys, Pasadena, CA 91125 USA

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

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

[7] Univ S Dakota, Dept Phys, Vermillion, SD 57069 USA

[8] Hungarian Astron Assoc, Budapest, Hungary

来源：

ASTROPHYSICAL JOURNAL | 2012年 / 745卷 / 01期

关键词：

planetary systems; stars:; individual; (HAT-P-25; GSC; 1788-01237); techniques: photometric techniques: spectroscopic; M-J PLANET; EXTRASOLAR PLANET; BRIGHT STAR; K-DWARF; RADIAL-VELOCITIES; ECCENTRIC ORBIT; KEPLER FIELD; STELLAR; MASS; EMISSION;

D O I：

10.1088/0004-637X/745/1/80

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of HAT-P-25b, a transiting extrasolar planet orbiting the V = 13.19 G5 dwarf star GSC 1788-01237, with a period P = 3.652836 +/- 0.000019 days, transit epoch T-c = 2455176.85173 +/- 0.00047 (BJD-barycentric Julian dates throughout the paper are calculated from Coordinated Universal Time, UTC), and transit duration 0.1174 +/- 0.0017 days. The host star has a mass of 1.01 +/- 0.03 M-circle dot, radius of 0.96(-0.04)(+0.05)R(circle dot), effective temperature 5500 +/- 80 K, and metallicity [Fe/H] = +0.31 +/- 0.08. The planetary companion has a mass of 0.567 +/- 0.022 M-J and radius of 1.190(-0.056)(+0.081) R-J yielding a mean density of 0.42 +/- 0.07 g cm(-3).

引用

页数：9

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