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Observations of the peculiar object MWC 560 in outburstThe results of ultraviolet spectroscopy, photoelectric photometry, and supplemental high-resolution H(alpha) spectroscopy of a photometric outburst of MWC 560 are discussed. Ultraviolet spectra are shown to be consistent with the ejection of an optically thick shell that produced strong absorption blends of Fe II and Cr II. The velocities reported exceed by far those previously found in symbiotic stars or recurrent novas. In addition to the variable high-velocity system of broad absorption features, a relatively stable system of Mg II, Mg I, Fe II, Cr II, and other ionic absorptions is observed. It is pointed out that the spectroscopic phenomena in MWC 560 resemble those found in XX Ophiuchi, but the velocities in the MWC 560 are an order of magnitude higher than those found in XX Oph.
Document ID
19910048959
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Michalitsianos, A. G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Maran, S. P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Oliversen, R. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bopp, B.
(Toledo, University OH, United States)
Kontizas, E.
(Athens National Observatory, Greece)
Date Acquired
August 14, 2013
Publication Date
April 20, 1991
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 371
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A33582
Distribution Limits
Public
Copyright
Other

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