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The reddening and variability of XX OphiuchiWe present polarization data on the XX Oph system which suggest that the interstellar extinction to this object has been overestimated in the past: our data imply A(V) = 1.6 mag. Our photometry and infrared spectroscopy suggest a spectral class of M7III for the late component, and a BOV companion that ionizes the wind of the cool component. XX Oph seems more like a Zeta Aur/VV Cep system than a 'symbiotic object'. The photometric variability of XX Oph seems to have a number of causes, ranging from shell-type variability in the U band to variations in the M component in the infrared.
Document ID
19940035002
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Evans, A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Albinson, J. S.
(Keele Univ. United Kingdom)
Barrett, P.
(South African Astronomical Observatory, Observatory, South Africa; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
Davies, J. K.
(Royal Observatory Edinburgh, United Kingdom)
Goldsmith, M. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hutchinson, M. G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Maddison, R. C.
(Keele Univ. United Kingdom)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Astronomy and Astrophysics
Volume: 267
Issue: 1
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
94A11657
Distribution Limits
Public
Copyright
Other

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