The properties of bumps in the light-curves of population I and II cepheids in four stellar systems.
The position and the frequency of bumps in the light-curves of Cepheids as a function of the period is investigated, mainly for the Population I Cepheids in the Magellanic Clouds, the Galaxy and M 31. The periodamplitude diagrams for Population I Cepheids of three of these star systems, show a "zone of avoidance" between log P = 0.9 and 1; in this zone not only fewer Cepheids occur, but their amplitudes are much lower than in adjacent zones. Key words: variable star - light-curve characteristics
Astronomy and Astrophysics
- Pub Date:
- August 1970