Investigation of Nova Cygni 1975 (V 1500) at Abastumani. I. Photographic Observations of Spectra

Details Investigation of Nova Cygni 1975 (V 1500) at Abastumani. I. Photographic Observations of Spectra Investigation of Nova Cygni 1975 (V 1500) at Abastumani. I. Photographic Observations of Spectra

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ap.....44...58k&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 44, Issue 1, p. 58-63 (2001).

Astronomy and Astrophysics

Astrophysics

Scientific paper

On the night of August 30/31, 1975, one of the authors discovered a nova in the constellation Cygnus. Spectroscopic observations of the nova were made with a 70-cm meniscus telescope, using a 72-cm, 8°, objective prism and a diffraction spectrograph mounted at the Cassegrain focus. The radial velocity of expansion of the nova's shell turned out to be about 2000 km/sec and its mass was on the order of 10-5 M and had a tendency to increase with time; we estimated the emission energy to be 5·1044 erg and the kinetic energy of the shell to be 1045 erg, while the electron temperature in the shell is 5000 K.

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