NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Outbursts by low-mass white dwarfs in symbiotic variablesThe high-resolution IUE spectra of the symbiotic variables BF Cygni and EG Andromedae are studied in order to describe the P Cygni-like features of these objects. The 10 high-dispersion IUE spectra are examined for orbital phase-dependent variations in the C IV resonance doublet in terms of velocity and/or structure. One image is found to have a strong He-II absorption feature that coincides in velocity with the C-IV absorption component in P Cygni. The absorbing material for both lines is related to outflow and P Cygni self-absorption near the hot component. The P Cygni profiles do not appear to be related to a red-giant wind nor an expanding circumbinary shell in the in both BF Cyg and EG And. Quasi-static evolutionary model calculations demonstrate an unexpected outburst behavior in response to the assumed accretion. These data are shown to be important for the study of symbiotic systems that contain low-mass white dwarfs.
Document ID
19920043827
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Sion, Edward M.
(Space Telescope Science Institute Baltimore, MD, United States)
Ready, Christian J.
(Villanova University PA, United States)
Date Acquired
August 15, 2013
Publication Date
February 1, 1992
Publication Information
Publication: Astronomical Society of the Pacific, Publications
Volume: 104
ISSN: 0004-6280
Subject Category
Astrophysics
Accession Number
92A26451
Funding Number(s)
CONTRACT_GRANT: NAG5-1243
CONTRACT_GRANT: NSF AST-90-16283
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available