Close frequencies in pulsating stars: common and mysterious!
- Author(s)
- Michel Breger, Alexei Pamyatnykh
- Abstract
Amplitude and phase variability are commonly found in many different types of pulsating stars. This suggests a common, presently unknown physical origin. We have examined the phenomenon in several delta Scuti stars with extensive data and find the beating of close frequencies to be responsible. This is demonstrated for the star FG Vir by testing the relationship between the observed amplitude and phase variations. Most close frequency pairs are situated near the observed or theoretically predicted frequencies of radial modes. The large number of detected close frequencies excludes the possibility of accidental frequency agreements.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Polish Academy of Sciences (PAS), Russian Academy of Sciences
- Journal
- Memorie Societa Astronomica Italiana
- Volume
- 77
- ISSN
- 0037-8720
- Publication date
- 2006
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/ff82ce45-3353-4203-83b6-da4e18735942