Discovery of rapid radial velocity variations in the roAp star 10 Aql and possible pulsations of ß CrB
- Author(s)
- Oleg Kochukhov, John Darlington Landstreet, Tanya A. Ryabchikova, Werner Wolfgang Weiss, Friedrich Kupka
- Abstract
We report discovery of radial velocity variations in rare earth spectral lines of the roAp star 10 Aql with amplitudes of between 30 and 130 m s−1 and periods of about 11 min. Radial velocity variations with amplitude 70 m s−1 may also have been detected in one spectral line of Fe i in β CrB. If confirmed, our results may indicate that all Ap stars in a certain temperature range pulsate, which means that roAp stars do not exist as a separate class but are only distinguished by higher pulsational amplitudes.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Uppsala University, University of Western Ontario, Russian Academy of Sciences
- Journal
- Monthly Notices of the Royal Astronomical Society
- Volume
- 337
- ISSN
- 0035-8711
- DOI
- https://doi.org/10.1046/j.1365-8711.2002.05872.x
- Publication date
- 2002
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/discovery-of-rapid-radial-velocity-variations-in-the-roap-star-10-aql-and-possible-pulsations-of-ss-crb(c07cf08c-6285-4835-b124-0b621fcde008).html