Investigations of pulsational properties and evolution of propagation diagram in some delta Scuti star models


Kiziloglu N., Kirbiyik H., Civelek R.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, cilt.12, sa.6, ss.1067-1082, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 12 Sayı: 6
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1142/s0218271803003529
  • Dergi Adı: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1067-1082
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

An investigation on the subject of evolution of propagation diagrams and obtaining the theoretical frequency spectrum of some delta Scuti star models with masses around 2 M-circle dot has been presented. The variations of some eigenfunctions throughout the star, the variation of omega(2) with logT(e) and the distribution of nodes of eigenfunctions of some modes along with the evolution of the star have been plotted and examined. For the models at the ZAMS phase, pure acoustic modes in the outer stellar layers and pure gravity modes in the interiors were calculated. A mixed character of low degree nonradial modes was found in evolved models. These modes behave like p modes in the envelope and like g modes in the interior.