| Issue |
A&A
Volume 368, Number 2, March III 2001
|
|
|---|---|---|
| Page(s) | 580 - 592 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20010020 | |
| Published online | 15 March 2001 | |
Multimode δ Scuti stars in the open cluster NGC 7062 *
1
Royal Observatory of Belgium, Ringlaan 3, 1180 Brussels, Belgium
2
University of Brussels (VUB), Pleinlaan 2, 1050 Brussels, Belgium
Corresponding author: L. M. Freyhammer, lfreyham@vub.ac.be
Received:
20
October
2000
Accepted:
21
December
2000
The central field of NGC 7062 was observed intensively with the main goal of finding δ Scuti stars suitable for use in asteroseismological tests of stellar structure and evolution theory. BV time series photometry was obtained for this northern open cluster, which has a large population of stars inside the δ Scuti instability strip, making it a probable host of several such variables. We report findings of 15 pulsating stars, including at least 13 δ Scuti stars. Ten variables oscillate in two or more frequencies. Only one of these variables was known before, for which we detected 9 frequencies. Five probable variables are mentioned, and period analysis is given for all 20 stars.
Key words: stars: δ Scuti; evolution; oscillations / (galaxy:) open clusters and associations: individual: NGC 7062
© ESO, 2001
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