Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.385.2151b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 385, Issue 4, pp. 2151-2160.
Astronomy and Astrophysics
Astronomy
19
Techniques: Radial Velocities, Celestial Mechanics, Planetary Systems
Scientific paper
We perform a statistical study of the process of orbital determination of the HD82943 extrasolar planetary system, using the current observational data set of N = 165 radial velocity (RV) measurements. Our aim is to analyse the dispersion of possible orbital fits leading to residuals compatible with the best solution, and to discuss the sensitivity of the results with respect to both the data set and the error distribution around the best fit. Although some orbital parameters (e.g. semimajor axis) appear well constrained, we show that the best fits for the HD82943 system are not robust, and at present it is not possible to estimate reliable solutions for these bodies. Finally, we discuss the possibility of a third planet, with a mass of 0.35MJup and an orbital period of 900 d. Stability analysis and simulations of planetary migration indicate that such a hypothetical three-planet system could be locked in a double 2/1 mean-motion resonance, similar to the so-called Laplace resonance of the three inner Galilean satellites of Jupiter.
Beauge Christian
Ferraz-Mello Sylvio
Giuppone C. A.
Michtchenko Tatiana A.
No associations
LandOfFree
Reliability of orbital fits for resonant extrasolar planetary systems: the case of HD82943 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 Reliability of orbital fits for resonant extrasolar planetary systems: the case of HD82943, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reliability of orbital fits for resonant extrasolar planetary systems: the case of HD82943 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1705841