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

• Type: Article in International Scientific Journal
• Date: 1998

Authors

Monteiro, MJPFG (Author) FCUP; Thompson, MJ (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: 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

Pages: 317-318

Indexing

ISI Web of Knowledge - 47 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: 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>

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2