New photoelectric observations of the shell star omicron And.
Abstract
New photoelectric observations of the shell star o And for the years 1976-77 are reported. The light curves show a reduction in the range of luminous variations, a progressively bluer color of the star and a return of its brightness at the values which preceded the reduction which took place between JD 42714-27. These findings, related to a spectral analysis of the light curve of the 1976 data, seem to suggest a relation between photometric variability and shell activity, although no direct correlations were found with the spectrographic data published so far.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- June 1979
- Bibcode:
- 1979A&AS...36..471G
- Keywords:
-
- Electrophotometry;
- Light Curve;
- Main Sequence Stars;
- Shell Stars;
- Power Spectra;
- Spectrum Analysis;
- Stellar Luminosity;
- Stellar Spectrophotometry;
- Tables (Data);
- Ubv Spectra;
- Variability;
- Astronomy;
- Shell Stars:Spectra;
- Shell Stars:UBV Photometry