The California Planet Survey III. A Possible 2:1 Resonance in the Exoplanetary Triple System HD 37124

Details The California Planet Survey III. A Possible 2:1 Resonance in the Exoplanetary Triple System HD 37124 The California Planet Survey III. A Possible 2:1 Resonance in the Exoplanetary Triple System HD 37124

2011-01-05

arxiv.org/abs/1101.1097v3

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

12 pp, emulateapj style, ApJ accepted. v2. Minor edits to update numbers, fix garbled text

Scientific paper

We present new radial velocities from Keck Observatory and both Newtonian and Keplerian solutions for the triple-planet system orbiting HD 37124. The orbital solution for this system has improved dramatically since the third planet was first reported in Vogt et al. 2005 with an ambiguous orbital period. We have resolved this ambiguity, and the outer two planets have an apparent period commensurability of 2:1. A dynamical analysis finds both resonant and non-resonant configurations consistent with the radial velocity data, and constrains the mutual inclinations of the planets to be less than about 30 degrees. We discuss HD 37124 in the context of the other 19 exoplanetary systems with apparent period commenserabilities, which we summarize in a table. We show that roughly one in three well-characterized multiplanet systems has a apparent low-order period commensuribility, which is more than would naively be expected if the periods of exoplanets in known multiplanet systems were drawn randomly from the observed distribution of planetary orbital periods.

Affiliated with

Also associated with

No associations

Rating

The California Planet Survey III. A Possible 2:1 Resonance in the Exoplanetary Triple System HD 37124 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 California Planet Survey III. A Possible 2:1 Resonance in the Exoplanetary Triple System HD 37124, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The California Planet Survey III. A Possible 2:1 Resonance in the Exoplanetary Triple System HD 37124 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-398204