EDP Sciences
Free Access
Issue
A&A
Volume 382, Number 2, February I 2002
Page(s) 556 - 562
Section Formation, structure and evolution of stars
DOI https://doi.org/10.1051/0004-6361:20011668
Published online 15 February 2002


A&A 382, 556-562 (2002)
DOI: 10.1051/0004-6361:20011668

Pulsational frequencies in the $\delta$ Scuti stars V624 Tauri and HD 23194

Results of the STEPHI X campaign on the Pleiades cluster
L. Fox-Machado1, M. Álvarez2, E. Michel3, Z. P. Li4, F. Pérez Hernández1, 5, M. Chevreton6, C. Barban3, J. A. Belmonte1, N. Dolez7, A. Fernandez6, J. P. Guo4, M. Haywood3, Y. Y. Liu4, S. Pau6, H. Planas2 and B. Servan3

1  Instituto de Astrofísica de Canarias, 38205 La Laguna Tenerife, Spain
2  Instituto de Astronomía de la UNAM, Ap.P. 877, Ensenada, BC, Mexico
3  Observatoire de Paris-Meudon, DASGAL, UMR 8633, 92195 Meudon, France
4  Beijing Observatory, Chinese Academy of Sciences, Beijing, PR China
5  Departamento de Astrofísica, Universidad de La Laguna, Tenerife, Spain
6  Observatoire de Paris-Meudon, DAEC, UMR 8632, 92195 Meudon, France
7  Observatoire Midi-Pyrénées, 31400 Toulouse, France

(Received 12 July 2001 / Accepted 13 November 2001 )

Abstract
The results of the tenth multi-site campaign of the STEPHI network are reported. The $\delta$ Scuti stars V624 Tau (HD 23156) and HD 23194, belonging to the Pleiades cluster, were observed photometrically for 34 days on three continents during 1999 November-December. An overall run of 343 hours of data was collected. Seven frequencies for V624 Tau and two frequencies for HD 23194 have been found above a 99% confidence level. These results greatly improve those found in previous studies with much less data. A preliminary comparison of observed and theoretical frequencies suggests that both stars may oscillate with radial and non-radial p modes of radial orders typical among $\delta$ Scuti stars.


Key words: stars: oscillations -- stars: variables: $\delta$ Sct -- stars: individual: HD 23156, HD 23194

Offprint request: L. Fox-Machado, lfox@ll.iac.es

SIMBAD Objects



© ESO 2002

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.