Near-infrared spectra of cataclysmic variables

We present results from the first systematic survey of the near-infrared (1-2.5 microns) spectra of cataclysmic variables. Emission lines of H I and He I are present in most objects. He II emission is observed in V Sge. Lines from high-ionization species may be present in TT Ari and SS Cyg. Absorpti...

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Bibliographic Details
Published in:The Astronomical journal 1993-09, Vol.106 (3), p.1191-1199
Main Authors: RAMSEYER, T. F, DINERSTEIN, H. L, LESTER, D. F, PROVENCAL, J
Format: Article
Language:English
Subjects:
Astronomy
Binary and multiple stars
Cataclysmic binaries (novae, dwarf novae, recurrent novae, and nova-like objects). Symbiotic stars
Earth, ocean, space
Exact sciences and technology
Novae, dwarf novae, recurrent novae, and other cataclysmic (eruptive) variables
Stars
Variable and peculiar stars (including novae)
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Summary:We present results from the first systematic survey of the near-infrared (1-2.5 microns) spectra of cataclysmic variables. Emission lines of H I and He I are present in most objects. He II emission is observed in V Sge. Lines from high-ionization species may be present in TT Ari and SS Cyg. Absorption features typical of late-type stars are detected in some systems. Spectra of SS Cyg over several years show possible variability of the absorption line strengths. On some occasions the absorption lines in SS Cyg may be stronger than those expected from a K5 V star. (Author (revised))
ISSN:0004-6256
1538-3881
DOI:10.1086/116718