The ELODIE survey for northern extra-solar planets - II. A Jovian planet on a long-period orbit around GJ 777A

被引：37

作者：

Naef, D

Mayor, M

Korzennik, SG

Queloz, D

Udry, S

Nisenson, P

Noyes, RW

Brown, TM

Beuzit, JL

Perrier, C

Sivan, JP

机构：

[1] Observ Geneva, CH-1290 Sauverny, Switzerland

[2] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[3] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA

[4] Univ Grenoble 1, Observ Grenoble, Astrophys Lab, F-38041 Grenoble, France

[5] Observ Haute Provence, F-04870 St Michel lObservatoire, France

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 410卷 / 03期

关键词：

techniques : radial velocities; stars : individual : GJ 777 A; stars : individual : HD 190360; stars : planetary systems;

D O I：

10.1051/0004-6361:20031341

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present radial-velocity measurements obtained with the ELODIE and AFOE spectrographs for GJ777A (HD190360), a metal-rich ([Fe/H] = 0.25) nearby (d = 15.9 pc) star in a stellar binary system. A long-period low radial-velocity amplitude variation is detected revealing the presence of a Jovian planetary companion. Some of the orbital elements remain weakly constrained because of the smallness of the signal compared to our instrumental precision. The detailed orbital shape is therefore not well established. We present our best fitted orbital solution: an eccentric (e = 0.48) 10.7-year orbit. The minimum mass of the companion is 1.33 M-Jup.

引用

页码：1051 / 1054

页数：4

共 19 条

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