The rapidly rotating d Scuti star AV Cetel

Autor(en)
T H Dall, Gerald Handler, M B Moalusi, Søren Frandsen
Abstrakt

We present results from an international spectroscopic and photometric campaign on the d Scuti star AV Cet. The star has a rich and complex pulsation spectrum, and we find 7 individual frequencies, with evidence for many more present below our detection limit. We investigate the prospects for mode identification in fast rotators, using several different techniques. We compare the methods and conclude that although no single technique can give unambiguous mode identification, the collective evidence does allow some conclusions to be drawn, suggesting the presence of one radial mode at 14.598 d-1. During the campaign we found the star HD 9139 to be a variable. From our photometry we find evidence for a variability time scale around 1 day, but we cannot find an unambiguous interpretation for its light variations.

Organisation(en)
Institut für Astrophysik
Externe Organisation(en)
European Southern Observatory (Germany), Aarhus University, South African Astronomical Observatory (SAAO), North-West University
Journal
Astronomy & Astrophysics
Band
410
Seiten
983-991
Anzahl der Seiten
9
ISSN
0004-6361
DOI
https://doi.org/10.1051/0004-6361:20031327
Publikationsdatum
2003
Peer-reviewed
Ja
ÖFOS 2012
103003 Astronomie
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/8a2e2710-eaeb-4f4c-a47f-967712aeaf6e