Emission-line peculiarities in the spectrum of HR Delphini

Details Emission-line peculiarities in the spectrum of HR Delphini Emission-line peculiarities in the spectrum of HR Delphini

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978azh....55..540r&link_type=abstract

Astronomicheskii Zhurnal, vol. 55, May-June 1978, p. 540-552. In Russian.

Other

Emission Spectra, Novae, Stellar Spectra, Chromium, Iron, Oxygen Spectra, Spectral Line Width, Titanium

Scientific paper

Emission-line profiles in the spectrum of HR Del (Nova Delphini 1967) are studied using spectra obtained with dispersions of 14 and 37 A/mm. It is shown that the emission lines consisted of the usual P Cyg-type component plus a sharp component in the premaximum stage, that the sharp components were probably Rayleigh lines, and that the half-widths of the sharp components (about 44 km/s) were the same in all the lines measured and remained constant in time. The results also indicate that the equivalent widths of the sharp emission lines varied with time in phase and that the Ti II emission line appeared later than those of other ionized metals. The existence of narrow emission components with a half-width of approximately 140 km/s after maximum light is noted, and it is suggested that these narrow components could not be related to the main envelope.

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