Other
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430606m&link_type=abstract
American Astronomical Society, AAS Meeting #214, #306.06; Bulletin of the American Astronomical Society, Vol. 41, p.729
Other
Scientific paper
The multiple-planet extrasolar system OGLE-2006-BLG-109L, discovered by gravitational microlensing, is possibly the closest analog to the solar system yet known (1): the two detected planets have mass ratios, semimajor axis ratios, and equilibrium temperatures that are similar to those of Jupiter and Saturn; the mass of the host star is only 0.5 solar mass, and the system is more compact than our own Solar system. The gravity of the two detected planets limits the regions in this system where additional planets and debris belts may exist. Test particle orbital stability analysis indicates that this system may readily harbor two debris belts, one interior and one exterior to the two Jovian planets, analogous to the Solar system's asteroid belt and Kuiper belt. Orbital stability in the habitable zone of this system is very sensitive to the stellar mass and the jovian planets' masses and orbital parameters: stable orbits may be possible if the Jovian planets' have anti-aligned apsides or are librating in a 2:1 mean motion resonance, otherwise a strong secular resonance would excite large orbital eccentricities and force an Earth-mass planet out of the habitable zone (2,3). However, an additional inner planet of at least 0.3 earth-mass quenches the instability in the habitable zone (2). Thus, our orbital stability considerations lead to this speculative conclusion: with two terrestrial planets, two jovian planets and two debris belts, the planetary architecture of a potentially habitable OGLE-2006-BLG-109L planetary system could bear even closer resemblance to our own Solar system than the two detected planets alone suggest.
References: (1) Gaudi, B.S., et al., Science, 319, 927 (2008); (2) Malhotra, R., Minton, D.A., ApJ-Letts, 683:L67-L70 (2008); (3) Migaszewski, C., et al., MNRAS, in press.
Malhotra Renu
Minton David A.
No associations
LandOfFree
Speculating on Additional Planets and Debris in the OGLE-2006-BLG-109L System 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 Speculating on Additional Planets and Debris in the OGLE-2006-BLG-109L System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speculating on Additional Planets and Debris in the OGLE-2006-BLG-109L System will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1106172