Ultraviolet, optical, and infrared observations of the intermediate polar TV Columbae

Details Ultraviolet, optical, and infrared observations of the intermediate polar TV Columbae Ultraviolet, optical, and infrared observations of the intermediate polar TV Columbae

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...288..292m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 1, 1985, p. 292-304.

Astronomy and Astrophysics

Astrophysics

12

Binary Stars, Cataclysmic Variables, Dwarf Novae, Infrared Spectra, Ultraviolet Spectra, Visible Spectrum, X Ray Sources, Iue, Satellite Observation, Stellar Models, Stellar Spectrophotometry, X Ray Stars

Scientific paper

Forty-three IUE spectra of the X-ray discovered, triply periodic cataclysmic variable, TV Col are examined. The results show that the UV flux varies with the four-day period discovered by Motch in 1981. By fitting continuum models to the UV and optical fluxes, it is inferred that this modulation corresponds to the periodic heating of a normally 9000 K source within the binary system due to reprocessing of beamed X-ray and (possibly) EUV radiation from the vicinity of the degenerate star. The observed flux from this heated source is consistent with its origin at either the disk hot spot or the secondary star. Phasing arguments, however, favor the identification of the latter as the primary reprocessing site in the system. The infrared observations are not consistent with the model proposed by Watts et al. in 1982 and imply that the four-day period does not correspond to the orbital period of the binary.

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