The Orbital Evolution of Gas Giant Planets around Giant Stars

Details The Orbital Evolution of Gas Giant Planets around Giant Stars The Orbital Evolution of Gas Giant Planets around Giant Stars

2009-10-13

arxiv.org/abs/0910.2396v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

10 pages, 3 figures, accepted for publication by ApJ Letters

Scientific paper

Recent surveys have revealed a lack of close-in planets around evolved stars more massive than 1.2 Msun. Such planets are common around solar-mass stars. We have calculated the orbital evolution of planets around stars with a range of initial masses, and have shown how planetary orbits are affected by the evolution of the stars all the way to the tip of the Red Giant Branch (RGB). We find that tidal interaction can lead to the engulfment of close-in planets by evolved stars. The engulfment is more efficient for more-massive planets and less-massive stars. These results may explain the observed semi-major axis distribution of planets around evolved stars with masses larger than 1.5 Msun. Our results also suggest that massive planets may form more efficiently around intermediate-mass stars.

Affiliated with

Also associated with

No associations

Rating

The Orbital Evolution of Gas Giant Planets around Giant Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Orbital Evolution of Gas Giant Planets around Giant Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Orbital Evolution of Gas Giant Planets around Giant Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-641051