Study of Planetary Systems around Giant Stars

Details Study of Planetary Systems around Giant Stars Study of Planetary Systems around Giant Stars

2011-02-02

arxiv.org/abs/1102.0512v2

AIP Conference Proceedings, Volume 1331, pp. 310-313 (2011)

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Part of PlanetsbeyondMS/2010 proceedings http://arxiv.org/html/1011.6606; Corrected the second author's name

Scientific paper

10.1063/1.3570992

More than 450 exoplanets have currently been detected, most of them by the radial velocity (RV) technique. While the majority of exoplanets have been found around main-sequence (MS) FGK stars (M 1.5M*), only a small fraction (- 10%) have been discovered orbiting post- MS stars. However, such stars are known to host exoplanets and the detection fraction appears to be larger than for solar-type dwarfs. To date - 30 planets have been found orbiting giant stars which have revealed interesting properties that contrast with the results found for solar-type stars. We are carrying out a RV search for planets around giant stars in the southern hemisphere in order to study different formation scenarios for planets around intermediate-mass stars and the effect of the post-MS evolution of the host stars on the orbits of close-in planets (a 0.6 AU).

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