MASSES AND ORBITAL CONSTRAINTS FOR THE OGLE-2006-BLG-109Lb,c JUPITER/SATURN ANALOG PLANETARY SYSTEM
MASSES AND ORBITAL CONSTRAINTS FOR THE OGLE-2006-BLG-109Lb,c JUPITER/SATURN ANALOG PLANETARY SYSTEM
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DOI：
10.1088/0004-637x/713/2/837
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发表时间：
2009-11
期刊：
影响因子：
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通讯作者：
David P. Bennett;S. Rhie;Sergei Nikolaev;B. Gaudi;A. Udalski;A. Gould;G. Christie;D. Maoz;Subo Dong;J. Mccormick;M. Szymański;P. Tristram;Bruce Macintosh;K. Cook;M. Kubiak;G. Pietrzyński;G. Pietrzyński;I. Soszyński;O. Szewczyk;K. Ulaczyk;Ł. Wyrzykowski;Ł. Wyrzykowski;D. Depoy;C. Han;S. Kaspi;C.‐U. Lee;F. Mallia;T. Natusch;B.-G. Park;R. Pogge;D. Polishook;F. Abe;I. Bond;C. Botzler;A. Fukui;J. Hearnshaw;Y. Itow;K. Kamiya;A. Korpela;P. Kilmartin;W. Lin;K. Masuda;Y. Matsubara;M. Motomura;Yasushi Muraki;S. Nakamura;Teppei Okumura;K. Ohnishi;Y. Perrott;N. Rattenbury;T. Sako;T. Saito;S. Sato;L. Skuljan;D. Sullivan;T. Sumi;W. Sweatman;P. Yock;M. Albrow;A. Allan;J. Beaulieu;D. Bramich;M. Burgdorf;C. Coutures;Martin Dominik;S. Dieters;P. Fouqué;J. Greenhill;K. Horne;C. Snodgrass;I. A. Steele;Y. Tsapras;R. Collaborations;B. Chaboyer;A. Crocker;A. S. Frank
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作者：
David P. Bennett;S. Rhie;Sergei Nikolaev;B. Gaudi;A. Udalski;A. Gould;G. Christie;D. Maoz;Subo Dong;J. Mccormick;M. Szymański;P. Tristram;Bruce Macintosh;K. Cook;M. Kubiak;G. Pietrzyński;G. Pietrzyński;I. Soszyński;O. Szewczyk;K. Ulaczyk;Ł. Wyrzykowski;Ł. Wyrzykowski;D. Depoy;C. Han;S. Kaspi;C.‐U. Lee;F. Mallia;T. Natusch;B.-G. Park;R. Pogge;D. Polishook;F. Abe;I. Bond;C. Botzler;A. Fukui;J. Hearnshaw;Y. Itow;K. Kamiya;A. Korpela;P. Kilmartin;W. Lin;K. Masuda;Y. Matsubara;M. Motomura;Yasushi Muraki;S. Nakamura;Teppei Okumura;K. Ohnishi;Y. Perrott;N. Rattenbury;T. Sako;T. Saito;S. Sato;L. Skuljan;D. Sullivan;T. Sumi;W. Sweatman;P. Yock;M. Albrow;A. Allan;J. Beaulieu;D. Bramich;M. Burgdorf;C. Coutures;Martin Dominik;S. Dieters;P. Fouqué;J. Greenhill;K. Horne;C. Snodgrass;I. A. Steele;Y. Tsapras;R. Collaborations;B. Chaboyer;A. Crocker;A. S. Frank
我们提出了一个新的分析木星+土星模拟系统，OGLE-2006-BLG-109 Lb，c，这是第一个双行星系统发现的引力微透镜方法。这是唯一一个通过任何方法发现的多行星系统，测量了星星和两颗行星的质量。除了两颗行星的特征外，这一事件还表现出微透镜视差特征和有限源效应，这提供了对星星和行星质量的直接测量，并且宿主星星的预期亮度得到了凯克AO成像的证实，产生的质量为Mb = 231 ± 19 M，Mc = 86 ± 7 M。这个系统中的土星类行星有一个持续了11天的行星光变曲线偏差，因此，轨道运动的影响在微透镜光变曲线中是可见的。我们发现，六个轨道参数中的四个是严格约束的，第五个参数，轨道加速度，是弱约束的。没有类似木星的行星的轨道信息，但它的存在有助于限制类似土星的行星的轨道运动。假设共面轨道，我们发现一个轨道偏心率和轨道倾角。倾角i > 49°的95%置信度下限意味着可以使用口径为30米的望远镜通过径向速度测量来探测和研究这个行星系统。
We present a new analysis of the Jupiter+Saturn analog system, OGLE-2006-BLG-109Lb,c, which was the first double planet system discovered with the gravitational microlensing method. This is the only multi-planet system discovered by any method with measured masses for the star and both planets. In addition to the signatures of two planets, this event also exhibits a microlensing parallax signature and finite source effects that provide a direct measure of the masses of the star and planets, and the expected brightness of the host star is confirmed by Keck AO imaging, yielding masses of , Mb = 231 ± 19 M⊕, and Mc = 86 ± 7 M⊕. The Saturn-analog planet in this system had a planetary light-curve deviation that lasted for 11 days, and as a result, the effects of the orbital motion are visible in the microlensing light curve. We find that four of the six orbital parameters are tightly constrained and that a fifth parameter, the orbital acceleration, is weakly constrained. No orbital information is available for the Jupiter-analog planet, but its presence helps to constrain the orbital motion of the Saturn-analog planet. Assuming co-planar orbits, we find an orbital eccentricity of and an orbital inclination of . The 95% confidence level lower limit on the inclination of i > 49° implies that this planetary system can be detected and studied via radial velocity measurements using a telescope of ≳30 m aperture.