Bibcode
Perez Hernandez, F.; Claret, A.; Belmonte, J. A.
Bibliographical reference
Astronomy and Astrophysics (ISSN 0004-6361), vol. 295, no. 1, p. 113-122
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3
1995
Citations
31
Refereed citations
27
Description
The results reported in this paper concern two delta Scuties in the
Praesepe cluster, namely BN Cnc and BU Cnc, observed during the 1992
STEPHI 4 campaign. Five and six frequency peaks, respectively, were
recorded as a result of the campaign. In this work, an attempt is made
to identify these frequency peaks as pulsation models, based on stellar
structure and oscillation computations. Rotation effects in the
frequencies are considered up to second order. Since both stars belong
to the same cluster, more severe constraints than for isolated stars can
be imposed. Evidence is found to support the presence of mixed modes
split by rotation. The frequencies of such modes strongly depend on the
input physics to the models and can hence become an important test for
the stellar structure theory.