Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:astro-ph/0302029)
· On-line Data
· References in the article
· Citations to the Article (34) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (28)
· Also-Read Articles (Reads History)
· HEP/Spires Information
·
· Translate This Page
Title:
Companions of old brown dwarfs, and very low mass stars
Authors:
Guenther, E. W.; Wuchterl, G.
Affiliation:
AA(Thueringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany), AB(Max-Planck-Institut für extraterrestrische Physik (MPE) Giessenbachstr., 85741 Garching, Germany)
Publication:
Astronomy and Astrophysics, v.401, p.677-683 (2003) (A&A Homepage)
Publication Date:
04/2003
Origin:
A&A
A&A Keywords:
stars: binaries: spectroscopic, stars: low-mass, brown dwarfs, stars: planetary systems: formation
DOI:
10.1051/0004-6361:20030149
Bibliographic Code:
2003A&A...401..677G

Abstract

Up to now, most planet search projects have concentrated on F to K stars. In order to considerably widen the view, we have started a survey for planets of old, nearby brown dwarfs and very low mass stars. Using UVES, we have observed 26 brown dwarfs and very low mass stars. These objects are quite inactive and are thus highly suitable for such a project. Two objects were found to be spectroscopic binaries. Another object shows significant radial velocity variations. From our measurements, we conclude that this object either has a planetary-mass companion, or the variations are caused by surface features. Within the errors of the measurements, the remaining objects are constant in radial velocity. While it is impossible to strictly exclude an orbiting planet from sparsely sampled RV data, we conclude that it is unlikely that these objects are orbited by massive planets with periods of 40 days or less.

Based on observations obtained at the European Southern Observatory, Paranal with the VLT UT2 (KUEYEN). ESO Proposals 68.C-0063, 67.C-0160.

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints