CoRoT measures solar-like oscillations and granulation in stars hotter than the Sun

被引：200

作者：

Michel, Eric ^{[1
,2
]}

Baglin, Annie ^{[1
,2
]}

Auvergne, Michel ^{[1
,2
]}

Catala, Claude ^{[1
,2
]}

Samadi, Reza ^{[1
,2
]}

Baudin, Frederic ^{[3
]}

Appourchaux, Thierry ^{[3
]}

Barban, Caroline ^{[1
,2
]}

Weiss, Werner W. ^{[4
]}

Berthomieu, Gabrielle ^{[5
]}

Boumier, Patrick ^{[3
]}

Dupret, Marc-Antoine ^{[1
,2
]}

Garcia, Rafael A. ^{[6
]}

Fridlund, Malcolm ^{[7
]}

Garrido, Rafael ^{[8
]}

Goupil, Marie-Jo ^{[1
,2
]}

Kjeldsen, Hans ^{[9
]}

Lebreton, Yveline ^{[10
]}

Mosser, Benoit ^{[1
,2
]}

Grotsch-Noels, Arlette ^{[11
]}

Janot-Pacheco, Eduardo ^{[12
]}

Provost, Janine ^{[5
]}

Roxburgh, Ian W. ^{[1
,2
,13
]}

Thoul, Anne ^{[11
]}

Toutain, Thierry ^{[14
]}

Tiphene, Didier ^{[1
,2
]}

Turck-Chieze, Sylvaine ^{[6
]}

Vauclair, Sylvie D. ^{[15
]}

Vauclair, Gerard P. ^{[15
]}

Aerts, Conny ^{[16
]}

Alecian, Georges ^{[17
]}

Ballot, Jerome ^{[18
]}

Charpinet, Stephane ^{[15
]}

Hubert, Anne-Marie ^{[10
]}

Lignieres, Francois ^{[15
]}

Mathias, Philippe ^{[19
]}

Monteiro, Mario J. P. F. G. ^{[20
]}

Neiner, Coralie ^{[10
]}

Poretti, Ennio ^{[21
]}

de Medeiros, Jose Renan ^{[22
]}

Ribas, Ignasi ^{[23
]}

Rieutord, Michel L. ^{[15
]}

Roca Cortes, Teodoro ^{[24
,25
]}

Zwintz, Konstanze ^{[4
]}

机构：

[1] Univ Paris 06, LESIA, Observ Paris, CNRS,UMR 8109, F-92195 Meudon, France

[2] Univ Paris 07, F-92195 Meudon, France

[3] Univ Paris 11, Inst Astrophys Spatiale, CNRS, UMR 8617, F-91405 Orsay, France

[4] Univ Vienna, Inst Astron, A-1180 Vienna, Austria

[5] Observ Cote Azur, CNRS, Lab Cassiopee, CNRS,UMR 6202, F-06304 Nice 04, France

[6] Univ Paris 07, Lab Astrophys Interact Multiechelles AIM, Commisariat Energie Atom DSM, CNRS,CEA,IRFU,SAp, F-91191 Gif Sur Yvette, France

[7] European Space Agcy, European Space Res & Technol Ctr, Astrophys Miss Div, Res & Sci Support Dept,SCI SA, NL-2200 AG Noordwijk, Netherlands

[8] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain

[9] Aarhus Univ, Danish Astroseismol Ctr DASC, Inst Fys Astron, DK-8000 Aarhus C, Denmark

[10] Observ Paris, CNRS, Lab Galaxies Etoiles Phys & Instrumentat GEPI, UMR 8111, F-92195 Meudon, France

[11] Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium

[12] Inst Astron Geofis & Ciencias Atmosfer, BR-05508090 Sao Paulo, Brazil

[13] Queen Mary Univ London, London E1 4NS, England

[14] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[15] Univ Toulouse 1, CNRS, Lab Astrophys Toulouse Tarbes, UMR 5572, F-31400 Toulouse, France

[16] Katholieke Univ Leuven, Inst Sterrenkunde, Dept Natuurkunde Sterrenkunde, B-3001 Heverlee, Belgium

[17] Univ Paris 07, Lab Univers & Theories LUTH, Observ Paris, CNRS,UMR 8102, F-92190 Meudon, France

[18] Max Planck Inst Astrophys, D-85741 Garching, Germany

[19] Univ Nice, Lab Hippolyte Fizeau, Observ Cote Azur, CNRS UMR 6525, F-06108 Nice 2, France

[20] Univ Porto, Ctr Astrofis, P-4150762 Oporto, Portugal

[21] Ist Nazl Astrofis, Osservatorio Astron Brera, I-23807 Merate, LC, Italy

[22] Univ Fed Rio Grande do Norte, Dept Fis, BR-59072970 Natal, RN, Brazil

[23] CSIC IEEC, Inst Ciencies Espai, Fac Ciencies, Bellaterra 08193, Spain

[24] Univ La Laguna, Inst Astrofis Canarias, Tenerife 38207, Spain

[25] Univ La Laguna, Dept Astrophys, Tenerife 38207, Spain

来源：

SCIENCE | 2008年 / 322卷 / 5901期

关键词：

D O I：

10.1126/science.1163004

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：

Oscillations of the Sun have been used to understand its interior structure. The extension of similar studies to more distant stars has raised many difficulties despite the strong efforts of the international community over the past decades. The CoRoT (Convection Rotation and Planetary Transits) satellite, launched in December 2006, has now measured oscillations and the stellar granulation signature in three main sequence stars that are noticeably hotter than the sun. The oscillation amplitudes are about 1.5 times as large as those in the Sun; the stellar granulation is up to three times as high. The stellar amplitudes are about 25% below the theoretic values, providing a measurement of the nonadiabaticity of the process ruling the oscillations in the outer layers of the stars.

引用

页码：558 / 560

页数：3

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