The moving bump in the light curves of SS For and RR Lyr

Autor(en)
Elisabeth Guggenberger, Katrien Kolenberg
Abstrakt

High-precision multisite photometry was used to investigate the bump occurring before minimum light in the light curves of the two RRab Blazhko stars RR Lyr and SS For. For both stars the phase of the bump was found to be variable with a period equal to the Blazhko period. There seems to be a direct connection between the behavior of the bump and the Blazhko effect. As most models connect the phase of the bump to the stellar radius, a variable bump phase may provide constraints to the models for explaining the bump.

Organisation(en)
Institut für Astrophysik
Journal
Communications in Asteroseismology
Band
148
Seiten
21-27
Anzahl der Seiten
7
ISSN
1021-2043
Publikationsdatum
2006
Peer-reviewed
Ja
ÖFOS 2012
103003 Astronomie
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/2a8d938d-468f-4a42-a252-8d83c3af1ec2