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Observations of two peculiar emission objects in the Large Magellanic CloudUltraviolet and visual wavelength spectra were obtained of two peculiar emission objects, Henize S63 and Sanduleak's star in the Large Magellanic Cloud. Previously not observed in the near- or far-ultraviolet, both objects exhibit strong permitted and semiforbidden line emissions. Estimates based on the absolute continuum flux of the hot companion star in Hen S63 indicate that it rivals the luminosity of the carbon star primary. The emission-line profile structure in both objects does not suggest Wolf-Rayet type emission. Carbon in Sanduleak's star (LMC anonymous) is conspicuously absent, while N V, semiforbidden N IV, and semiforbidden N III dominate the UV emission-line spectrum. Nitrogen is overabundant with respect to carbon and oxygen in both objects. The large overabundance of nitrogen in Sanduleak's star suggests evidence for CNO processes material similar to that seen in Nu Car.
Document ID
19840034704
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kafatos, M.
(George Mason University Fairfax, VA, United States)
Michalitsianos, A. G.
(NASA Goddard Space Flight Center Laboratory for Astronomy and Solar Physics, Greenbelt, MD, United States)
Allen, D. A.
(Anglo-Australian Observatory Epping, New South Wales, Australia)
Stencel, R. E.
(NASA Astrophysics Div. Washington, DC, United States)
Date Acquired
August 12, 2013
Publication Date
December 15, 1983
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 275
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
84A17491
Distribution Limits
Public
Copyright
Other

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