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Identification of 4U 1849-31 with V1223 Sagittarii and discovery of optical pulsationsThe X-ray source 4U 1849-31 is identified with the 13 mag star V1223 Sgr, on the basis of a precise HEAO 1 modulation collimator X-ray position uniquely selected by the Ariel-5 sky survey location. It is shown by optical spectroscopy and photometry that V1223 Sgr is a cataclysmic variable, displaying a photometric period of 13.2 min that is interpreted as being due to the rotation of a degenerate dwarf. The similarity of this system to H2252-035 is noted.
Document ID
19820031115
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Steiner, J. E.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Schwartz, D. A.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Jablonski, F. J.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Busko, I. C.
(Observatorio Nacional do Brasil Rio de Janeiro, Brazil)
Watson, M. G.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Pye, J. P.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Mchardy, I. M.
(Leicester, University Leicester, United Kingdom)
Date Acquired
August 10, 2013
Publication Date
October 1, 1981
Publication Information
Publication: Astrophysical Journal
Subject Category
Astronomy
Accession Number
82A14650
Funding Number(s)
CONTRACT_GRANT: NAS8-30453
Distribution Limits
Public
Copyright
Other

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