Time-resolved spectrophotometry of the cataclysmic variable EX Hydrae

Details Time-resolved spectrophotometry of the cataclysmic variable EX Hydrae Time-resolved spectrophotometry of the cataclysmic variable EX Hydrae

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...317..765k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 317, June 15, 1987, p. 765-767, 769-771, 773-777 (2 ff.).

Other

17

Cataclysmic Variables, Dwarf Novae, Eclipsing Binary Stars, Emission Spectra, Stellar Spectrophotometry, H Beta Line, Line Shape, Temporal Resolution

Scientific paper

EX Hya is an unusual, eclipsing dwarf nova. In addition to its 98 min orbital period there is a 67 min photometric period which is also seen in the X-ray portion of the spectrum. The authors present the results of a study based on 264 time-resolved optical spectra. Both the emission-line strengths and widths are strongly modulated with the 67 min period, and the two sides of the emission-line profiles are phase-shifted with respect to each other. The data are consistent with a model of an intermediate polar, where a significant fraction of the line emission originates from accretion funnels above the misaligned magnetic poles of the white dwarf.

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