EDP Sciences
Free Access
Volume 438, Number 2, August I 2005
Page(s) L25 - L28
Section Letters
DOI https://doi.org/10.1051/0004-6361:200500116
Published online 08 July 2005

A&A 438, L25-L28 (2005)
DOI: 10.1051/0004-6361:200500116


Giant planet companion to 2MASSW J1207334-393254

G. Chauvin1, A.-M. Lagrange2, C. Dumas1, B. Zuckerman3, D. Mouillet4, I. Song3, J.-L. Beuzit2 and P. Lowrance5

1  European Southern Observatory, Casilla 19001, Santiago 19, Chile
    e-mail: gchauvin@eso.org
2  Laboratoire d'Astrophysique, Observatoire de Grenoble, 414 rue de la piscine, Saint-Martin d'Hères, France
3  Department of Physics & Astronomy and Center for Astrobiology, University of California, Los Angeles, Box 951562, CA 90095-1562, USA
4  Laboratoire d'Astrophysique, Observatoire Midi-Pyrénées, Tarbes, France
5  Spitzer Science Center, Infrared Processing and Analysis Center, MS 220-6, Pasadena, CA 91125, USA

(Received 5 April 2005 / Accepted 28 April 2005)

We report new VLT/NACO imaging observations of the young, nearby brown dwarf 2MASSW J1207334-393254 and its suggested planetary mass companion (2M1207 b). Three epochs of 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.

SIMBAD Objects

© ESO 2005

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