Hot super-Earths stripped by their host stars

被引：200

作者：

Lundkvist, M. S. ^{[1
,2
]}

Kjeldsen, H. ^{[1
]}

Albrecht, S. ^{[1
]}

Davies, G. R. ^{[1
,3
]}

Basu, S. ^{[4
]}

Huber, D. ^{[1
,5
]}

Justesen, A. B. ^{[1
]}

Karoff, C. ^{[1
,6
]}

Aguirre, V. Silva ^{[1
]}

Van Eylen, V. ^{[1
]}

Vang, C. ^{[1
]}

Arentoft, T. ^{[1
]}

Barclay, T. ^{[7
,8
]}

Bedding, T. R. ^{[1
,5
]}

Campante, T. L. ^{[1
,3
]}

Chaplin, W. J. ^{[1
,3
]}

Christensen-Dalsgaard, J. ^{[1
]}

Elsworth, Y. P. ^{[1
,3
]}

Gilliland, R. L. ^{[9
]}

Handberg, R. ^{[1
]}

Hekker, S. ^{[1
,10
]}

Kawaler, S. D. ^{[11
]}

Lund, M. N. ^{[1
,3
]}

Metcalfe, T. S. ^{[1
,12
]}

Miglio, A. ^{[1
,3
]}

Rowe, J. F. ^{[7
,13
]}

Stello, D. ^{[1
,5
]}

Tingley, B. ^{[1
]}

White, T. R. ^{[1
,14
]}

机构：

[1] Aarhus Univ, Dept Phys & Astron, SAC, Ny Munkegade 120, DK-8000 Aarhus C, Denmark

[2] Heidelberg Univ, Zentrum Astron, Konigstuhl 12, D-69117 Heidelberg, Germany

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

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

[5] Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia

[6] Aarhus Univ, Dept Geosci, Hoegh Guldbergs Gade 2, DK-8000 Aarhus C, Denmark

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

[8] Bay Area Environm Res Inst, 596 1st St West, Sonoma, CA 95476 USA

[9] Penn State Univ, Ctr Exoplanets & Habitable Worlds, 525 Davey Lab, University Pk, PA 16802 USA

[10] Max Planck Inst Solar Syst Res, D-37077 Gottingen, Germany

[11] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[12] Space Sci Inst, Boulder, CO 80301 USA

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

[14] Univ Gottingen, Inst Astrophys, Friedrich Hund Pl 1, D-37077 Gottingen, Germany

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

基金：

新加坡国家研究基金会; 欧洲研究理事会;

关键词：

FALSE-POSITIVE RATE; KEPLER PLANET CANDIDATES; SOLAR-TYPE STARS; RADIUS DISTRIBUTION; FUNDAMENTAL PROPERTIES; ASTEROSEISMOLOGY; MASS; COMBINATION; EVAPORATION; VALIDATION;

D O I：

10.1038/ncomms11201

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：

Simulations predict that hot super-Earth sized exoplanets can have their envelopes stripped by photoevaporation, which would present itself as a lack of these exoplanets. However, this absence in the exoplanet population has escaped a firm detection. Here we demonstrate, using asteroseismology on a sample of exoplanets and exoplanet candidates observed during the Kepler mission that, while there is an abundance of super-Earth sized exoplanets with low incident fluxes, none are found with high incident fluxes. We do not find any exoplanets with radii between 2.2 and 3.8 Earth radii with incident flux above 650 times the incident flux on Earth. This gap in the population of exoplanets is explained by evaporation of volatile elements and thus supports the predictions. The confirmation of a hot-super-Earth desert caused by evaporation will add an important constraint on simulations of planetary systems, since they must be able to reproduce the dearth of close-in super-Earths.

引用

页数：8

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