On the seismic signature of the HeII ionization zone in stellar envelopes

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Monteiro, MJPFG (Autor) FCUP; Thompson, MJ (Autor) Outra

Revista

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Título: NEW EYES TO SEE INSIDE THE SUN AND STARS: PUSHING THE LIMITS OF HELIO- AND ASTEROSEISMOLOGY WITH NEW OBSERVATIONS FROM THE GROUND AND FROM SPACE

Vol. 371

Páginas: 317-318

Indexação

ISI Web of Knowledge - 47 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-001-9J4

DOI: 10.1017/s0074180900238862

Abstract (EN): <jats:p>Sharp variations of the structure of the star create a characteristic signal in its frequencies of oscillation (e.g. [3]). The zone of the second ionization of helium is such a localized feature of the structure whose properties depend mainly on the abundance of helium and the equation of state. Considering that such a signal should easily be detectable provided the frequencies are measured to rather better than 1¿Hz accuracy (the COROT project should measure oscillation frequencies with an accuracy of 0.1¿Hz), we present here a tool to study this aspect of stellar structure.</jats:p>

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 2