Spectroscopic studies of nova V1500 Cygni. II. Models for the 3 hour profile modulations.
Abstract
The amplitudes and time lags of the 3-hour periodic profile modulation are measured through several emission lines in spectrograms of V1500 Cygni taken in September 1975. A grid of predicted values of these quantities is calculated for possible models and compared with the observational data. These and considerations of the profile shape support and further define a previously proposed model. It is characterized by an equatorial ring, polar blobs, a 3.3-hour periodic searchlight illumination, an expansion velocity of about 2000 km/s, an inclination of approximately 50 deg, and time of outburst August 29.5 + or - 1 day.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1978
- DOI:
- 10.1086/156440
- Bibcode:
- 1978ApJ...224..899H
- Keywords:
-
- Emission Spectra;
- Novae;
- Stellar Models;
- Stellar Spectra;
- Amplitudes;
- Balmer Series;
- Periodic Variations;
- Time Lag;
- Astronomy;
- Line Profiles:Novae;
- Nova V1500 Cygni;
- Nova Cygni 1975