EDP Sciences
Free access
Volume 422, Number 2, August I 2004
Page(s) 631 - 636
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20047122

A&A 422, 631-636 (2004)
DOI: 10.1051/0004-6361:20047122

High resolution spectroscopy of brown dwarfs in Taurus

Detection of accretion in KPNO-Tau-3
D. Barrado y Navascués

Laboratorio de Astrofísica Espacial y Física Fundamental, INTA, PO Box 50727, 2808 Madrid, Spain
    e-mail: barrado@laeff.esa.es

(Received 3 February 2004 / Accepted 11 March 2004)

We present high resolution optical spectroscopy of three candidate members of the Taurus-Auriga star forming region. Based on the spectral type, the strength, profile and width of the H $\alpha$ line, the detected lithium at 6708 Å, the location of these objects in the H-R diagram and the comparison with similar objects belonging to young stellar associations, we determine that they are bona fide members of the SFR with ages of ~3 Myr, and have masses at or below the substellar limit. At least in one case, there is active accretion from a circum(sub)stellar disk. This result suggests that high mass brown dwarfs go through a classical T Tauri phase and form, as stars do, from the collapse and fragmentation of a molecular cloud.

Key words: open clusters and associations: individual: Taurus -- stars: brown dwarfs

SIMBAD Objects

© ESO 2004

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.