Determining the Inclination of the Rotation Axis of a Sun-like Star

Details Determining the Inclination of the Rotation Axis of a Sun-like Star Determining the Inclination of the Rotation Axis of a Sun-like Star

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...589.1009g&link_type=abstract

The Astrophysical Journal, Volume 589, Issue 2, pp. 1009-1019.

Astronomy and Astrophysics

Astronomy

72

Stars: Planetary Systems, Stars: Fundamental Parameters, Stars: Oscillations, Stars: Rotation

Scientific paper

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>~30deg for stars that rotate at least twice as fast as the Sun.

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