Spectrum variability in HR 8752.
Abstract
Observations in the region of H-alpha are presented for the luminous supergiant HR 8752. Two time scales for the variation of emission features are detected. Substantial changes in H-alpha appear to take months or years. More subtle changes can occur in a matter of days. The photospheric spectrum also shows evolution on both long and short time scales as has been noted by previous observers.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- August 1980
- DOI:
- 10.1086/130701
- Bibcode:
- 1980PASP...92..497B
- Keywords:
-
- Emission Spectra;
- H Alpha Line;
- Stellar Spectra;
- Supergiant Stars;
- Absorption Spectra;
- Photosphere;
- Stellar Luminosity;
- Astrophysics