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Near-simultaneous ultraviolet and optical spectrophotometry of T Tauri starsA set of near-simultaneous ultraviolet and optical spectra and UBVR(J)I(J) photometry of five T Tauri stars has been analyzed for the shape of the energy distribution shortward of 3000 A. The far-ultraviolet continua of these stars are very much stronger than the level of light scattered from longer wavelengths in the IUE spectrograph. The results, expressed as two-color plots, show that the UV colors of T Tauri stars differ significantly from those expected from their optical spectral types. Although these particular K-type T Tauri stars are not extreme members of the class, they have the UV colors of A stars. The spectral shape of this UV excess is approximately that expected from published chromospheric models of T Tauri stars.
Document ID
19870033181
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Goodrich, Robert W.
(Lick Observatory Santa Cruz, CA, United States)
Herbig, G. H.
(Lick Observatory Santa Cruz, CA, United States)
Date Acquired
August 13, 2013
Publication Date
October 1, 1986
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 309
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
87A20455
Funding Number(s)
CONTRACT_GRANT: NSG-5361
CONTRACT_GRANT: NSF AST-82-03115
Distribution Limits
Public
Copyright
Other

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