A CORRELATION BETWEEN STELLAR ACTIVITY AND HOT JUPITER EMISSION SPECTRA

被引：227

作者：

Knutson, Heather A. ^{[1
]}

Howard, Andrew W. ^{[1
,2
]}

Isaacson, Howard ^{[1
]}

机构：

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

[2] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 720卷 / 02期

关键词：

binaries: eclipsing; planetary systems; stars: activity; techniques: spectroscopic; EXTRASOLAR GIANT PLANETS; CA-II H; THERMAL EMISSION; INFRARED-EMISSION; DAYSIDE SPECTRUM; BAND EMISSION; LIGHT CURVES; TEMPERATURE; ATMOSPHERES; WATER;

D O I：

10.1088/0004-637X/720/2/1569

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present evidence for a correlation between the observed properties of hot Jupiter emission spectra and the activity levels of the host stars measured using Ca II H & K emission lines. We find that planets with dayside emission spectra that are well-described by standard one-dimensional atmosphere models with water in absorption (HD 189733, TrES-1, TrES-3, WASP-4) orbit chromospherically active stars, while planets with emission spectra that are consistent with the presence of a strong high-altitude temperature inversion and water in emission orbit quieter stars. We estimate that active G and K stars have Lyman alpha fluxes that are typically a factor of 4-7 times higher than quiet stars with analogous spectral types and propose that the increased UV flux received by planets orbiting active stars destroys the compounds responsible for the formation of the observed temperature inversions. In this paper, we also derive a model-independent method for differentiating between these two atmosphere types using the secondary eclipse depths measured in the 3.6 and 4.5 mu m bands on the Spitzer Space Telescope and argue that the observed correlation is independent of the inverted/non-inverted paradigm for classifying hot Jupiter atmospheres.

引用

页码：1569 / 1576

页数：8

共 77 条

[1] The secondary eclipse of CoRoT-1b [J].

Alonso, R. ;

Alapini, A. ;

Aigrain, S. ;

Auvergne, M. ;

Baglin, A. ;

Barbieri, M. ;

Barge, P. ;

Bonomo, A. S. ;

Borde, P. ;

Bouchy, F. ;

Chaintreuil, S. ;

De la Reza, R. ;

Deeg, H. J. ;

Deleuil, M. ;

Dvorak, R. ;

Erikson, A. ;

Fridlund, M. ;

Fialho, F. De Oliveira ;

Gondoin, P. ;

Guillot, T. ;

Hatzes, A. ;

Jorda, L. ;

Lammer, H. ;

Leger, A. ;

Llebaria, A. ;

Magain, P. ;

Mazeh, T. ;

Moutou, C. ;

Ollivier, M. ;

Paetzold, M. ;

Pont, F. ;

Queloz, D. ;

Rauer, H. ;

Rouan, D. ;

Schneider, J. ;

Wuchterl, G. .

ASTRONOMY & ASTROPHYSICS, 2009, 506 (01) :353-358

[2] H-band thermal emission from the 19-h period planet WASP-19b [J].

Anderson, D. R. ;

Gillon, M. ;

Maxted, P. F. L. ;

Barman, T. S. ;

Cameron, A. Collier ;

Hellier, C. ;

Queloz, D. ;

Smalley, B. ;

Triaud, A. H. M. J. .

ASTRONOMY & ASTROPHYSICS, 2010, 513

[3]

BAILUNAS SL, 1995, APJ, V438, P269

[4] On the presence of water and global circulation in the transiting planet HD 189733b [J].

Barman, Travis S. .

ASTROPHYSICAL JOURNAL LETTERS, 2008, 676 (01) :L61-L64

[5] METHANE IN THE ATMOSPHERE OF THE TRANSITING HOT NEPTUNE GJ436B? [J].

Beaulieu, J. -P. ;

Tinetti, G. ;

Kipping, D. M. ;

Ribas, I. ;

Barber, R. J. ;

Cho, J. Y. -K. ;

Polichtchouk, I. ;

Tennyson, J. ;

Yurchenko, S. N. ;

Griffith, C. A. ;

Batista, V. ;

Waldmann, I. ;

Miller, S. ;

Carey, S. ;

Mousis, O. ;

Fossey, S. J. ;

Aylward, A. .

ASTROPHYSICAL JOURNAL, 2011, 731 (01)

[6]

BEERER IM, 2010, APJ UNPUB

[7] Kepler's Optical Phase Curve of the Exoplanet HAT-P-7b [J].

Borucki, W. J. ;

Koch, D. ;

Jenkins, J. ;

Sasselov, D. ;

Gilliland, R. ;

Batalha, N. ;

Latham, D. W. ;

Caldwell, D. ;

Basri, G. ;

Brown, T. ;

Christensen-Dalsgaard, J. ;

Cochran, W. D. ;

DeVore, E. ;

Dunham, E. ;

Dupree, A. K. ;

Gautier, T. ;

Geary, J. ;

Gould, A. ;

Howell, S. ;

Kjeldsen, H. ;

Lissauer, J. ;

Marcy, G. ;

Meibom, S. ;

Morrison, D. ;

Tarter, J. .

SCIENCE, 2009, 325 (5941) :709-709

[8] Theoretical spectra and light curves of close-in extrasolar giant planets and comparison with data [J].

Burrows, A. ;

Budaj, J. ;

Hubeny, I. .

ASTROPHYSICAL JOURNAL, 2008, 678 (02) :1436-1457

[9] Theoretical spectral models of the planet HD 209458b with a thermal inversion and water emission bands [J].

Burrows, A. ;

Hubeny, I. ;

Budaj, J. ;

Knutson, H. A. ;

Charbonneau, D. .

ASTROPHYSICAL JOURNAL, 2007, 668 (02) :L171-L174

[10] Detection of thermal emission from an extrasolar planet [J].

Charbonneau, D ;

Allen, LE ;

Megeath, ST ;

Torres, G ;

Alonso, R ;

Brown, TM ;

Gilliland, RL ;

Latham, DW ;

Mandushev, G ;

O'Donovan, FT ;

Sozzetti, A .

ASTROPHYSICAL JOURNAL, 2005, 626 (01) :523-529

← 1 2 3 4 5 6 7 8 →