Masses and Orbital Constraints for the OGLE-2006-BLG-109Lb,c Jupiter/Saturn Analog Planetary System
作者： DP Bennett , SH Rhie , S Nikolaev , BS Gaudi , A Udalski
DOI: 10.1088/0004-637X/713/2/837
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摘要: We present a new analysis of the Jupiter+Saturn analog system, OGLE-2006-BLG-109Lb,c, which was first double planet system discovered with gravitational microlensing method. This is only multi-planet by any method measured masses for star and both planets. In addition to signatures two planets, this event also exhibits parallax signature finite source effects that provide direct measure expected brightness host confirmed Keck AO imaging, yielding , Mb = 231 ± 19 M ⊕, Mc 86 7 ⊕. The Saturn-analog in had planetary light-curve deviation lasted 11 days, as result, orbital motion are visible light curve. find four six parameters tightly constrained fifth parameter, acceleration, weakly constrained. No information available Jupiter-analog planet, but its presence helps constrain planet. Assuming co-planar orbits, we an eccentricity inclination . 95% confidence level lower limit on i > 49° implies can be detected studied via radial velocity measurements using telescope 30 m aperture.
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