EDP Sciences
Free access
Volume 408, Number 2, September III 2003
Page(s) 693 - 706
Section Formation and evolution of planetary systems
DOI http://dx.doi.org/10.1051/0004-6361:20030637

A&A 408, 693-706 (2003)
DOI: 10.1051/0004-6361:20030637

The photosphere and veiling spectrum of T Tauri stars

H. C. Stempels and N. Piskunov

Department of Astronomy and Space Physics, Box 515, 751 20 Uppsala, Sweden
(Received 12 February 2003 / Accepted 22 April 2003)

Using recent high signal-to-noise and high spectral resolution ( $R \sim 60\,000$) observations with VLT/UVES, we have analysed the photosphere and veiling spectrum of five T Tauri stars. With a grid of 1-dimensional plane-parallel hydrostatic model atmospheres from the MARCS consortium we have determined their atmospheric properties, calculated synthetic spectra and determined the spectrum of the veiling continuum. Our analysis of the veiling spectrum supports the view that veiling can be represented by a combination of continuum sources. However, for the most strongly accreting stars we find a broad region around 5300 Å where the derived level of veiling is consistently higher than expected from continuum sources.

Key words: stars: pre-main sequence -- stars: atmospheres -- accretion, accretion disks -- methods: numerical

Offprint request: H. C. Stempels, Eric.Stempels@astro.uu.se

SIMBAD Objects

© ESO 2003

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.