Determining the inclination of the rotation axis of a sun-like star

L. Gizon, S. K. Solanki

Research output: Contribution to journalArticle

Abstract

Asteroseismology provides us with the possibility of determining the angle, i, between the direction of the rotation axis of a pulsating Sun-like star and the line of sight. A knowledge of i is important not just for obtaining improved stellar parameters, but also in order to determine the true masses of extrasolar planets detected from the radial velocity shifts of their central stars. By means of Monte Carlo simulations, we estimate the precision of the measurement of i and other stellar parameters. We find that the inclination angle can be retrieved accurately when i ≳ 30° for stars that rotate at least twice as fast as the Sun.

Original languageEnglish (US)
Pages (from-to)1009-1019
Number of pages11
JournalAstrophysical Journal
Volume589
Issue number2 I
DOIs
StatePublished - Jun 1 2003

Keywords

  • Planetary systems
  • Stars: fundamental parameters
  • Stars: oscillations
  • Stars: rotation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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