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Title How to unveil a T Tauri star
Creator/Author Hartigan, P. ; Hartmann, L. ; Kenyon, S. ; Hewett, R. ; Stauffer, J. (Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA) ; NASA, Ames Research Center, Moffett Field, CA (USA))
Publication Date1989 Aug 01
OSTI IdentifierOSTI ID: 5402780
Other Number(s)ISSN0067-0049; CODEN: APJSA
Resource TypeJournal Article
Resource RelationAstrophysical Journal, Supplement Series ; Vol/Issue: 70
Subject640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar, Radio & X-Ray Sources; T TAURI STARS-- SPECTRA; ABSORPTION SPECTRA;EMISSION SPECTRA;SPECTROPHOTOMETRY;STELLAR ATMOSPHERES;VISIBLE SPECTRA
Related SubjectATMOSPHERES;ERUPTIVE VARIABLE STARS;SPECTRA;STARS;VARIABLE STARS
Description/Abstract 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.^36 refs.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 899-914
System Entry Date2001 May 13

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