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An unprecedented UV/optical flare in TV ColumbaeA surprising, 2 mag, short time scale (hr) outburst of TV Col (2A 0526-328) was observed simultaneously at IUE and optical wavelengths in 1982 November. During this 'flare', the IUE emission lines of N v 1240, C IV 1550, and He II 1640, intensified by more than an order of magnitude and developed P Cygni profiles, indicating mass loss. Continuum fits with a power-law plus a blackbody from the UV through the optical showed a steepening of the UV power-law component and an increase in the temperature and size of the blackbody component during the flare activity. This unusual behavior is discussed in terms of an accretion disk instability.
Document ID
19840052296
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Szkody, P.
Mateo, M.
Date Acquired
August 12, 2013
Publication Date
May 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 280
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
84A35083
Funding Number(s)
CONTRACT_GRANT: NSF AST-74-04128
CONTRACT_GRANT: NSF AST-82-04488
CONTRACT_GRANT: NSG-5395
Distribution Limits
Public
Copyright
Other

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