A Jovian-Mass Planet in Microlensing Event OGLE-2005-BLG-071
A Jovian-Mass Planet in Microlensing Event OGLE-2005-BLG-071
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DOI：
10.1086/432795
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
A. Udalski;M. Jaroszynski;B. Paczyński;M. Kubiak;M. Szymański;I. Soszyński;G. Pietrzyński;K. Ulaczyk;O. Szewczyk;Ł. Wyrzykowski;G. Christie;D. Depoy;S. Dong;A. Gal-yam;B. Gaudi;A. Gould;C. Han;S. Lépine;J. Mccormick;B.-G. Park;R. Pogge;D. Bennett;I. Bond;Y. Muraki;P. Tristram;P. Yock;J. Beaulieu;D. Bramich;D. Bramich;S. Dieters;J. Greenhill;K. Hill;K. Horne;D. Kubas
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文献类型：
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作者：
A. Udalski;M. Jaroszynski;B. Paczyński;M. Kubiak;M. Szymański;I. Soszyński;G. Pietrzyński;K. Ulaczyk;O. Szewczyk;Ł. Wyrzykowski;G. Christie;D. Depoy;S. Dong;A. Gal-yam;B. Gaudi;A. Gould;C. Han;S. Lépine;J. Mccormick;B.-G. Park;R. Pogge;D. Bennett;I. Bond;Y. Muraki;P. Tristram;P. Yock;J. Beaulieu;D. Bramich;D. Bramich;S. Dieters;J. Greenhill;K. Hill;K. Horne;D. Kubas
我们报告在微透镜事件OGLE-2005-BLG-071中发现了一颗几个木星质量的行星伴星。在事件的峰值处进行精确的（小于1%）光度测定，可以获得极高的信噪比，检测出与孤立透镜预期的光曲线的偏差。这种偏差的行星特征很容易从光曲线的总体特征中明确地辨别出来。详细的模型得出了一个严格约束的行星-恒星质量比q = mp/M = 0.0071±0.0003。这是第二次用微透镜对行星进行强有力的探测，证明了这项技术本身是可行的，而且在微透镜探测的系统中，行星并不罕见，这些系统通常位于离银河系中心几千秒的地方。
We report the discovery of a several-Jupiter-mass planetary companion to the primary lens star in microlensing event OGLE-2005-BLG-071. Precise (≲1%) photometry at the peak of the event yields an extremely high signal-to-noise ratio detection of a deviation from the light curve expected from an isolated lens. The planetary character of this deviation is easily and unambiguously discernible from the gross features of the light curve. Detailed modeling yields a tightly constrained planet-star mass ratio of q = mp/M = 0.0071 ± 0.0003. This is the second robust detection of a planet with microlensing, demonstrating that the technique itself is viable and that planets are not rare in the systems probed by microlensing, which typically lie several kiloparsecs toward the Galactic center.