Giant planet companion to 2MASSW J1207334-393254

被引：241

作者：

Chauvin, G

Lagrange, AM

Dumas, C

Zuckerman, B

Mouillet, D

Song, I

Beuzit, JL

Lowrance, P

机构：

[1] European So Observ, Santiago 19, Chile

[2] Observ Grenoble, Astrophys Lab, St Martin Dheres, France

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Univ Calif Los Angeles, Ctr Astrobiol, Los Angeles, CA 90095 USA

[5] Observ Midi Pyrenees, Astrophys Lab, Tarbes, France

[6] Ctr Infrared Proc & Anal, Spitzer Sci Ctr, Pasadena, CA 91125 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 438卷 / 02期

关键词：

D O I：

10.1051/0004-6361:200500116

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report new VLT/ NACO imaging observations of the young, nearby brown dwarf 2MASSWJ1207334-393254 and its suggested planetary mass companion (2M1207b). Three epochs of VLT VLT/ NACO measurements obtained over nearly one year show that the planetary mass companion candidate shares the same proper motion and, with a high confidence level, is not a stationary background object. This result confirms the status of 2M1207 b as of planetary mass ( 5 times the mass of Jupiter) and the first image of a planetary mass companion in a different system than our own. This discovery offers new perspectives for our understanding of chemical and physical properties of planetary mass objects as well as their mechanisms of formation.

引用

页码：L25 / L28

页数：4

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