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Discovery of very high velocity outflow in V Hydra - Wind from an accretion disk in a binary?High-resolution observations of lines from the CO v = 1-0 vibration-rotation band at 4.6 microns, taken with the FTS/KPNO 4-m telescope, are reported for the carbon-rich red giant V Hydra, which is surrounded by an extended expanding molecular envelope resulting from extensive mass loss. The spectrum shows, in addition to the expected absorption at the outflow velocity of the envelope, absorption extending up to 120 km/s bluewards of the stellar velocity. A comparison of the spectrum observed at two epochs shows that the high-velocity absorption features change with time. It is suggested that the observed high-velocity features in V Hydra arise in a high-velocity polar outflow from an accretion disk in a binary system, as proposed in the mass-loss model for bipolar envelopes by Morris (1988).
Document ID
19880062443
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sahai, R.
(Chalmers Tekniska Hogskola, Goteborg; Goteborg, Universitet Sweden)
Wannier, P. G.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
July 1, 1988
Publication Information
Publication: Astronomy and Astrophysics
Volume: 201
Issue: 1, Ju
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
88A49670
Distribution Limits
Public
Copyright
Other

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