Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apjs...70..899h&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 70, Aug. 1989, p. 899-914.
Astronomy and Astrophysics
Astrophysics
104
Pre-Main Sequence Stars, Stellar Spectrophotometry, T Tauri Stars, Photosphere, Stellar Spectra, Visible Spectrum
Scientific paper
A method for separating the 'veiling' continuum often present in T Tauri stars from the underlying photospheric spectrum is described. Echelle observations from 5100 to 6800 A of the partially veiled T Tauri star BP Tau were analyzed to determine the shape of the veiling spectrum. The residuals of the fit indicate the deviation of the veiling spectrum from a simple continuum and identify the location and strength of any emission-line components. It is shown, by means of goodness-of-fit tests, that the spectrum of BP Tau can be decomposed into a normal stellar spectrum plus a smooth veiling continuum with only a few emission lines superposed. The continuum dominates the veiling spectrum in this spectral region; the veiling does not arise from numerous deep photospheric absorption lines that are filled in by weak emission.
Hartigan Patrick
Hartmann Lee
Hewett Robert
Kenyon Scott
Stauffer John
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