A pair of planets around HD 202206 or a circumbinary planet?

Details A pair of planets around HD 202206 or a circumbinary planet? A pair of planets around HD 202206 or a circumbinary planet?

2004-11-17

arxiv.org/abs/astro-ph/0411512v2

Astronomy and Astrophysics

Astrophysics

9 pages, 14 figures, accepted in A&A, 12-May-2005

Scientific paper

Long-term precise Doppler measurements with the CORALIE spectrograph reveal the presence of a second planet orbiting the solar-type star HD202206. The radial-velocity combined fit yields companion masses of m_2\sini = 17.4 M_Jup and 2.44 M_Jup, semi-major axes of a = 0.83 AU and 2.55 AU, and eccentricities of e = 0.43 and 0.27, respectively. A dynamical analysis of the system further shows a 5/1 mean motion resonance between the two planets. This system is of particular interest since the inner planet is within the brown-dwarf limits while the outer one is much less massive. Therefore, either the inner planet formed simultaneously in the protoplanetary disk as a superplanet, or the outer Jupiter-like planet formed in a circumbinary disk. We believe this singular planetary system will provide important constraints on planetary formation and migration scenarios.

Affiliated with

Also associated with

No associations

Rating

A pair of planets around HD 202206 or a circumbinary planet? 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 A pair of planets around HD 202206 or a circumbinary planet?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A pair of planets around HD 202206 or a circumbinary planet? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-256819