Are extrasolar oceans common throughout the Galaxy?

被引：9

作者：

Ehrenreich, D.

Cassan, A.

机构：

[1] Univ Paris 06, Inst Astrophys, CNRS, UMR 7095, F-75014 Paris, France

[2] Heidelberg Univ, Astronomisches Rechen Inst, Zent Astrophys, D-69120 Heidelberg, Germany

来源：

ASTRONOMISCHE NACHRICHTEN | 2007年 / 328卷 / 08期

关键词：

planets and satellites : general; planets and satellites : individual (OGLE 2005-BLG-390Lb); techniques : microlensing;

D O I：

10.1002/asna.200710798

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Light and cold extrasolar planets such as OGLE 2005-BLG-390Lb, a 5.5 Earth masses planet detected via microlensing, could be frequent in the Galaxy according to some preliminary results from microlensing experiments. These planets can be frozen rocky- or ocean-planet, situated beyond the snow line and, therefore, beyond the habitable zone of their system. They can nonetheless host a layer of liquid water, heated by radiogenic energy, underneath an ice shell surface for billions of years, before freezing completely. These results suggest that oceans under ice, like those suspected to be present on icy moons in the Solar system, could be a common feature of cold low-mass extrasolar planets. (c) 2007 WILEY-VCH Verlag GmbH&Co. KGaA, Weinheim.

引用

页码：789 / 792

页数：4

共 24 条

[1] Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing [J].

Beaulieu, JP ;

Bennett, DP ;

Fouqué, P ;

Williams, A ;

Dominik, M ;

Jorgensen, UG ;

Kubas, D ;

Cassan, A ;

Coutures, C ;

Greenhill, J ;

Hill, K ;

Menzies, J ;

Sackett, PD ;

Albrow, M ;

Brillant, S ;

Caldwell, JAR ;

Calitz, JJ ;

Cook, KH ;

Corrales, E ;

Desort, M ;

Dieters, S ;

Dominis, D ;

Donatowicz, J ;

Hoffman, M ;

Kane, S ;

Marquette, JB ;

Martin, R ;

Meintjes, P ;

Pollard, K ;

Sahu, K ;

Vinter, C ;

Wambsganss, J ;

Woller, K ;

Horne, K ;

Steele, I ;

Bramich, DM ;

Burgdorf, M ;

Snodgrass, C ;

Bode, M ;

Udalski, A ;

Szymanski, MK ;

Kubiak, M ;

Wieckowski, T ;

Pietrzynski, G ;

Soszynski, I ;

Szewczyk, O ;

Wyrzykowski, L ;

Paczynski, B ;

Abe, F ;

Bond, IA .

NATURE, 2006, 439 (7075) :437-440

[2] OGLE 2003-BLG-235/MOA 2003-BLG-53: A planetary microlensing event . ,, , , , , , . [J].

Bond, IA ;

Udalski, A ;

Jaroszynski, M ;

Rattenbury, NJ ;

Paczynski, B ;

Soszynski, I ;

Wyrzykowski, L ;

Szymanski, MK ;

Kubiak, M ;

Szewczyk, O ;

Zebrun, K ;

Pietrzynski, G ;

Abe, F ;

Bennett, DP ;

Eguchi, S ;

Furuta, Y ;

Hearnshaw, JB ;

Kamiya, K ;

Kilmartin, PM ;

Kurata, Y ;

Masuda, K ;

Matsubara, Y ;

Muraki, Y ;

Noda, S ;

Okajima, K ;

Sako, T ;

Sekiguchi, T ;

Sullivan, DJ ;

Sumi, T ;

Tristram, PJ ;

Yanagisawa, T ;

Yock, PCM .

ASTROPHYSICAL JOURNAL, 2004, 606 (02) :L155-L158

[3]

BROEG C, 2007, IN PRESS MNRAS

[4]

Cassan A, 2007, ASTR SOC P, V366, P337

[5]

CASSAN A, 2007, IN PRESS

[6] The galactic disk mass budget. I. Stellar mass function and density [J].

Chabrier, G .

ASTROPHYSICAL JOURNAL, 2001, 554 (02) :1274-1281

[7] Stochastic distributions of lens and source properties for observed galactic microlensing events [J].

Dominik, M .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2006, 367 (02) :669-692

[8] On the possible properties of small and cold extrasolar planets: Is OGLE 2005-BLG-390LB entirely frozen? [J].

Ehrenreich, David ;

des Etangs, Alain Lecavelier ;

Beaulieu, Jean-Philippe ;

Grasset, Olivier .

ASTROPHYSICAL JOURNAL, 2006, 651 (01) :535-543

[9] Atmosphere, interior, and evolution of the metal-rich transiting planet HD 149026b [J].

Fortney, JJ ;

Saumon, D ;

Marley, MS ;

Lodders, K ;

Freedman, RS .

ASTROPHYSICAL JOURNAL, 2006, 642 (01) :495-504

[10]

Gould A., 2006, Astrophysical Journal, Letters, V644, pL37, DOI 10.1086/505421

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