On the excited mode stability in the roAp star gamma Equ

Author(s)
Michail Sachkov, Tanya A. Ryabchikova, Michael Gruberbauer
Abstract

Based on both photometric and spectroscopic data analysis, we conclude that in the roAp star ? Equ excited frequencies are stable on the time scale of several years. All observed highest peak frequencies are close to the frequency pair that was first resolved by the Canadian mini- satellite MOST. Observed amplitude modulation in ? Equ and, possibly, in some other slowly rotating roAp stars can be explained by the existence of such closely spaced frequencies.

Organisation(s)
Department of Astrophysics
External organisation(s)
Russian Academy of Sciences
Journal
Communications in Asteroseismology
Volume
157
Pages
363-364
No. of pages
2
ISSN
1021-2043
Publication date
2008
Peer reviewed
Yes
Austrian Fields of Science 2012
103003 Astronomy
Portal url
https://ucrisportal.univie.ac.at/en/publications/5a382afc-1e86-4916-9a8a-f3c111236539