Discovery of a low-mass brown dwarf companion of the young nearby star G196-3.

Rebolo, R. and Zapatero Osorio, María R. and Madruga Sánchez, Santiago and Béjar, V. and Arribas, S. and Licandro, J. (1998). Discovery of a low-mass brown dwarf companion of the young nearby star G196-3.. "Science", v. 282 ; pp. 1309-1312. ISSN 0036-8075.

Description

Title: Discovery of a low-mass brown dwarf companion of the young nearby star G196-3.
Author/s:
  • Rebolo, R.
  • Zapatero Osorio, María R.
  • Madruga Sánchez, Santiago
  • Béjar, V.
  • Arribas, S.
  • Licandro, J.
Item Type: Article
Título de Revista/Publicación: Science
Date: November 1998
ISSN: 0036-8075
Volume: 282
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img] PDF - Users in campus UPM only - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (361kB)

Abstract

A substellar-mass object in orbit at about 300 astronomical units from the young low-mass star G 196-3 was detected by direct imaging. Optical and infrared photometry and low- and intermediate-resolution spectroscopy of the faint companion, hereafter referred to as G 196-3B, confirm its cool atmosphere ?15 Jupiter masses. The separation and allow its mass to be estimated at 25?10 between the objects and their mass ratio suggest the fragmentation of a collapsing cloud as the most likely origin for G 196-3B, but alternatively it could have originated from a protoplanetary disc that has been dissipated. Whatever the formation process was, the young age of the primary star (about 100 million years) demonstrates that substellar companions can form on short time scales.

More information

Item ID: 21709
DC Identifier: http://oa.upm.es/21709/
OAI Identifier: oai:oa.upm.es:21709
Official URL: http://www.sciencemag.org/
Deposited by: Memoria Investigacion
Deposited on: 18 Dec 2013 17:40
Last Modified: 22 Sep 2014 11:26
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM