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Observational Constraints on Mode Excitation in δ-Scuti Stars In Open Clusters

Published online by Cambridge University Press:  12 April 2016

S. Frandsen  and
H. Kjeldsen
S. Frandsen
Affiliation:
Institute of Physics and Astronomy, Århus University, Denmark
H. Kjeldsen
Affiliation:
Institute of Physics and Astronomy, Århus University, Denmark

Extract

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The special opportunities offered by δ-Scuti stars are the following:

  1. - They regularly oscillate in several modes, and with high precision observations one has measured of the order 5 modes (Michel and Baglin 1991

  2. - The excitation is a very delicate and therefore a very sensitive measure of the internal structure.

  3. - They are found in open clusters which constitute a very rich scenario for tests of the theory of stellar structure and evolution. This makes it feasible to observe several stars simultaneously and gain more results than for single stars.

  4. - The brightness is moderately high and still they live long enough to be present in a variety of clusters and in the field as well.

Type
VIII. Asteroseismology: observation
Information
International Astronomical Union Colloquium , Volume 137: Inside the Stars , 1993 , pp. 746 - 748
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Breger, M. 1979, Publ. Ast. Soc. Pac. 91, 5 Google Scholar
Dziembowski, W. and Królikowska, M. 1990, Acta Astron. 40, 19 Google Scholar
Fitch, W.S. 1981, Astroph. J. 249, 218 CrossRefGoogle Scholar
Michel, E. and Baglin, A. 1991, Adv. Space Res. 11, 70 Google Scholar