Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sval....5..243b&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 5, Sept. 1979, p. 452-455.) Soviet Astronomy Letters, vol. 5, Sept.-Oct. 1979, p. 243-2
Astronomy and Astrophysics
Astronomy
Dwarf Stars, Novae, Stellar Spectra, Emission Spectra, H Beta Line, Light Curve, Spectral Line Width, Spectrograms
Scientific paper
Spectrograms have been obtained for four dwarf novae, SU Ursae Majoris, IR Geminorum, SY Cancri, and YZ Cancri, using the 6 m telescope. Emission line equivalent widths, Balmer jump values, and H beta line profiles are presented for SU UMa, which differs from ordinary dwarf novae in that its light curve occasionally exhibits supermaxima. IR Geminorum exhibits faint hydrogen emission lines and a weak Balmer jump in emission, while shallow and broad hydrogen absorption lines, as well as strong Ca II, H and K absorption, occur in the spectrum of SY Cancri. Concerning YZ Cancri, hydrogen emission lines of moderate intensity are visible as far as H8, He I lines are absent, and the Ca II line and the Balmer jump in emission were observed.
Burenkov Alexander N.
Voikhanskaia N. F.
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