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

L. Gizon; S. K. Solanki

doi:10.1086/374715

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

L. Gizon, S. K. Solanki

Center for Space Science

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	1009-1019
Number of pages	11
Journal	Astrophysical Journal
Volume	589
Issue number	2 I
DOIs	https://doi.org/10.1086/374715
State	Published - 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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10.1086/374715

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

Abstract

Keywords

ASJC Scopus subject areas

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