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Titolo: Comparative seismology of pre- and main sequence stars in the instability strip
Autore: Suran, M; Goupil, M; Baglin, A; Lebreton, Y; Catala, C;
- Indirizzi:
- Observ Paris Meudon, DASGAL, CNRS, UMR 8633, Meudon, France Observ Paris Meudon Meudon France ASGAL, CNRS, UMR 8633, Meudon, France Observ Paris Meudon, DESPA, CNRS, UMR 8632, Meudon, France Observ Paris Meudon Meudon France DESPA, CNRS, UMR 8632, Meudon, France Observ Midi Pyrenees, LAT, CNRS, UMR 5572, Toulouse, France Observ Midi Pyrenees Toulouse France , CNRS, UMR 5572, Toulouse, France
- Titolo Testata:
- ASTRONOMY & ASTROPHYSICS
fascicolo: 1,
volume: 372,
anno: 2001,
pagine: 233 - 240
- SICI:
- 1432-0746(200106)372:1<233:CSOPAM>2.0.ZU;2-E
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- HERBIG AE STAR; STRANGE MODES; STELLAR; VARIABILITY; OPACITIES; PULSATION;
- Keywords:
- stars : oscillations, stars : pre-main sequence;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 27
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Goupil, M Observ Paris Meudon, DASGAL, CNRS, UMR 8633, Meudon, France Observ Paris Meudon Meudon France S, UMR 8633, Meudon, France
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- Citazione:
- M. Suran et al., "Comparative seismology of pre- and main sequence stars in the instability strip", ASTRON ASTR, 372(1), 2001, pp. 233-240
Abstract
Pulsational properties of 1.8 M-circle dot stellar models covering the latest stages of contraction toward the main sequence up to early hydrogen burning phases are investigated by means of linear nonadiabatic analyses. Results confirm that pre-main sequence stars (pms) which cross the classical instability strip on their way toward the main sequence are pulsationally unstable with respect to the classical opacity mechanisms. For both pms and main sequence types of models in the lower part of the instability strip, theunstable frequency range is found to be roughly the same. Some non-radial unstable modes are very sensitive to the deep internal structure of the star. It is shown that discrimination between pms and main sequence stages is possible using differences in their oscillation frequency distributions in the low frequency range.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/05/13 alle ore 05:02:59