The SOPHIE search for northern extrasolar planets XIII. Two planets around M-dwarfs Gl617A and Gl96

被引：19

作者：

Hobson, M. J. ^{[1
]}

Diaz, R. F. ^{[2
,3
]}

Delfosse, X. ^{[4
]}

Astudillo-Defru, N. ^{[5
,6
]}

Boisse, I. ^{[1
]}

Bouchy, F. ^{[6
]}

Bonfils, X. ^{[4
]}

Forveille, T. ^{[4
]}

Hara, N. ^{[6
,7
]}

Arnold, L. ^{[8
]}

Borgniet, S. ^{[4
]}

Bourrier, V. ^{[6
]}

Brugger, B. ^{[1
]}

Cabrera, N. ^{[4
]}

Courcol, B. ^{[1
]}

Dalal, S. ^{[9
]}

Deleuil, M. ^{[1
]}

Demangeon, O. ^{[10
]}

Dumusque, X. ^{[6
]}

Ehrenreich, D. ^{[6
]}

Hebrard, G. ^{[8
,9
]}

Kiefer, F. ^{[9
]}

Lopez, T. ^{[1
]}

Mignon, L. ^{[4
]}

Montagnier, G. ^{[8
,9
]}

Mousis, O. ^{[1
]}

Moutou, C. ^{[1
,12
]}

Pepe, F. ^{[6
]}

Rey, J. ^{[6
]}

Santerne, A. ^{[1
]}

Santos, N. ^{[10
,11
]}

Stalport, M. ^{[6
]}

Segransan, D. ^{[6
]}

Udry, S. ^{[6
]}

Wilson, P. A. ^{[9
,13
]}

机构：

[1] Aix Marseille Univ, Lab Astrophys Marseille, UMR 7326, CNRS, F-13388 Marseille 13, France

[2] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Buenos Aires, DF, Argentina

[3] Univ Buenos Aires, CONICET, IAFE, Buenos Aires, DF, Argentina

[4] Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France

[5] Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile

[6] Univ Geneva, Observ Astron, 51 Chemin Maillettes, CH-1290 Versoix, Switzerland

[7] UPMC, ASD IMCCE, CNRS UMR8028, Observ Paris,PSL, 77 Ave Denfert Rochereau, F-75014 Paris, France

[8] Aix Marseille Univ, Observ Haute Prov, CNRS, Inst Pytheas UMS 3470, F-04870 St Michel lObservatoire, France

[9] Univ Paris 06, Inst Astrophys Paris, UMR7095, CNRS, 98bis Blvd Arago, F-75014 Paris, France

[10] Univ Porto, Inst Astrofis & Ciencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal

[11] Univ Porto, Dept Fis & Astron, Fac Ciencias, Rua Campo Alegre, P-4169007 Porto, Portugal

[12] Canada France Hawaii Telescope Corp, 65-1238 Mamalahoa Hwy, Kamuela, HI 96743 USA

[13] Leiden Univ, Leiden Observ, Postbus 9513, NL-2300 RA Leiden, Netherlands

来源：

ASTRONOMY & ASTROPHYSICS | 2018年 / 618卷

关键词：

techniques: radial velocities; planetary systems; stars: late-type; stars: individual: Gl617A; stars: individual: Gl96; EXOPLANETS; VALIDATION; STARS;

D O I：

10.1051/0004-6361/201832732

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of two exoplanets and a further tentative candidate around the M-dwarf stars Gl96 and Gl617A, based on radial velocity measurements obtained with the SOPHIE spectrograph at the Observatoire de Haute-Provence. Both stars were observed in the context of the SOPHIE exoplanet consortium's dedicated M-dwarf subprogramme, which aims to detect exoplanets around nearby M-dwarf stars through a systematic survey. For Gl96 we present the discovery of a new exoplanet at 73.9 d with a minimum mass of 19.66 earth masses. Gl96 b has an eccentricity of 0.44, placing it among the most eccentric planets orbiting M stars. For Gl617A we independently confirm a recently reported exoplanet at 86.7 d with a minimum mass of 31.29 earth masses. Both Gl96 b and Gl617A b are potentially within the habitable zone, although the high eccentricity of Gl96 b may take it too close to the star at periapsis.

引用

页数：15

共 18 条

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