Changes of a mean yearly brightness on 11 dKe-dMe stars
Abstract
Photometric behaviour of 11 dKe-dMe stars have been studied in a range of some decades using the Sternberg Astronomical Institute plate collection. The yearly mean light variations up to several tenths magnitudes were determined or suspected for stars V1816 Cyg, V775 Her, V808 TAu, EI Cnc. Time scales of such variations are estimated of 4 - 50 years. The star V910 Ori is a variable too, but its light curve is not a typical for BY Dra stars.
- Publication:
-
Izvestiya Ordena Trudovogo Krasnogo Znameni Krymskoj Astrofizicheskoj Observatorii
- Pub Date:
- June 2001
- Bibcode:
- 2001IzKry..97...17B
- Keywords:
-
- Photometry;
- Dwarfs;
- Light Variations