EDP Sciences
Free access
Volume 422, Number 1, July IV 2004
Page(s) 271 - 273
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20040209

A&A 422, 271-273 (2004)
DOI: 10.1051/0004-6361:20040209

Research Note

Breaking the core-envelope symmetry in p-mode pulsating stars

A. Miglio1, 2 and E. Antonello2

1  Institut d'Astrophysique et de Géophysique de l'Université de Liège, 17 Allée du 6 Août, 4000 Liège, Belgium
2  INAF-Osservatorio Astronomico di Brera, via Bianchi 46, 23807 Merate, Italy

(Received 5 February 2004 / Accepted 29 April 2004)

It has been shown that there is a potential ambiguity in the asteroseismic determination of the location of internal structures in a pulsating star (Montgomery et al. 2003). We show how, in the case of high-order non-radial acoustic modes, it is possible to remove this ambiguity by considering modes of different degree. To support our conclusions we have investigated the seismic signatures of sharp density variations in the structure of quasi-homogeneous models.

Key words: stars: oscillations (including pulsations) -- stars: interiors

Offprint request: A. Miglio, miglio@astro.ulg.ac.be

© ESO 2004