The photosphere and veiling spectrum of T Tauri stars

Details The photosphere and veiling spectrum of T Tauri stars The photosphere and veiling spectrum of T Tauri stars

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...408..693s&link_type=abstract

Astronomy and Astrophysics, v.408, p.693-706 (2003)

Astronomy and Astrophysics

Astrophysics

14

Stars: Pre-Main Sequence, Stars: Atmospheres, Accretion, Accretion Disks, Methods: Numerical

Scientific paper

Using recent high signal-to-noise and high spectral resolution (R ~ 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.
Based on observations collected at the European Southern Observatory, Chile (proposal 65.I-0404).

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