Spectroscopic observations of the cataclysmic variable HL CMa during outburst

Details Spectroscopic observations of the cataclysmic variable HL CMa during outburst Spectroscopic observations of the cataclysmic variable HL CMa during outburst

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...125l...1w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 125, no. 1, Aug. 1983, p. L1-L4. Sponsorship: Deutsche Forschungsgemeinschaft.

Astronomy and Astrophysics

Astrophysics

8

Stellar Evolution, Stellar Spectra, Stellar Spectrophotometry, Variable Stars, Balmer Series, H Lines, Radial Velocity, Visible Spectrum

Scientific paper

The authors present optical spectrophotometric observations of the cataclysmic system HL CMa during rise, maximum, and decline phase of an outburst. The spectral evolution is discussed. At maximum light, broad absorption troughs of the Balmer lines are visible. In addition, strong H, He I, He II, and C III-N III (4650 Å) emission is present. Radial velocity measurements reveal an orbital period of 0d.2145±0d.0006. The overall spectral behavior makes HL CMa an unusual cataclysmic variable.

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