CHARACTERIZING LENSES AND LENSED STARS OF HIGH-MAGNIFICATION SINGLE-LENS GRAVITATIONAL MICROLENSING EVENTS WITH LENSES PASSING OVER SOURCE STARS
CHARACTERIZING LENSES AND LENSED STARS OF HIGH-MAGNIFICATION SINGLE-LENS GRAVITATIONAL MICROLENSING EVENTS WITH LENSES PASSING OVER SOURCE STARS
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表征高倍率单透镜引力微透镜事件的透镜和透镜恒星（透镜经过源恒星）
DOI：
10.1088/0004-637x/751/1/41
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Choi J
中科院分区：
文献类型：
--
作者：
Choi J
分析了OGLE-2004-BLG-254、MOA-2007-BLG-176、MOA-2007-BLG-233/OGLE-2007-BLG-302、MOA-2009-BLG-174、MOA-2010-BLG-436、MOA-2011-BLG-093、MOA-2007-BLG-233、MOA-2009-BLG-174、MOA-2010-BLG-436、MOA-2011-BLG-093、MOA-2007-BLG-233、MOA-2007-BLG-302、MOA-2007-BLG-174、MOA-2010-BLG-436、MOA-2011-BLG-093、MOA-2007-MOA-2011-BLG-274、OGLE-2011-BLG-0990/MOA-2011-BLG-300和OGLE-2011-BLG-1101/MOA-2011-BLG-325。对于所有的事件，我们测量的线性边缘暗化系数的源星的表面亮度轮廓通过测量的光变曲线附近的有限源效应的影响的峰值的偏差。对于七个事件，我们测量了爱因斯坦半径和透镜-源相对自行。其中，有五个事件的爱因斯坦半径小于0.2质量，使透镜非常低质量的星星或褐矮星候选人。特别是对于MOA-2011-BLG-274，小的爱因斯坦半径θ E = 0.08 mas，加上短的时间尺度t E = 2.7天，这表明透镜可能是一颗自由漂浮的行星。对于MOA-2009-BLG-174，我们测量了透镜视差，从而唯一确定了透镜的物理参数。我们还发现，测量到的透镜质量为0.84 M，这与一颗恒星与源的混合是一致的，这表明混合很可能是透镜。虽然我们没有发现任何事件的行星信号，但我们提供了排除图，显示了排除行星存在的置信水平，作为分离和质量比的函数。
We present the analysis of the light curves of nine high-magnification single-lens gravitational microlensing events with lenses passing over source stars, including OGLE-2004-BLG-254, MOA-2007-BLG-176, MOA-2007-BLG-233/OGLE-2007-BLG-302, MOA-2009-BLG-174, MOA-2010-BLG-436, MOA-2011-BLG-093, MOA-2011-BLG-274, OGLE-2011-BLG-0990/MOA-2011-BLG-300, and OGLE-2011-BLG-1101/MOA-2011-BLG-325. For all of the events, we measure the linear limb-darkening coefficients of the surface brightness profile of source stars by measuring the deviation of the light curves near the peak affected by the finite-source effect. For seven events, we measure the Einstein radii and the lens-source relative proper motions. Among them, five events are found to have Einstein radii of less than 0.2 mas, making the lenses very low mass star or brown dwarf candidates. For MOA-2011-BLG-274, especially, the small Einstein radius of θ E∼ 0.08 mas combined with the short timescale of t E∼ 2.7 days suggests the possibility that the lens is a free-floating planet. For MOA-2009-BLG-174, we measure the lens parallax and thus uniquely determine the physical parameters of the lens. We also find that the measured lens mass of∼ 0.84 M☉ is consistent with that of a star blended with the source, suggesting that the blend is likely to be the lens. Although we did not find planetary signals for any of the events, we provide exclusion diagrams showing the confidence levels excluding the existence of a planet as a function of the separation and mass ratio.
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影响因子：
64.8
作者：
T. K. D. P. I. A. F. C. S. A. K. J. B. Y. P. M. A. W. Sumi Kamiya Bennett Bond Abe Botzler Fukui Furusaw-T.-K.-D.-P.-I.-A.-F.-C.-S.-A.-K.-J.-B.-Y.-P.-M.-A.;T. Sumi;K. Kamiya;D. Bennett;I. Bond-I.-Bo
通讯作者：
T. K. D. P. I. A. F. C. S. A. K. J. B. Y. P. M. A. W. Sumi Kamiya Bennett Bond Abe Botzler Fukui Furusaw-T.-K.-D.-P.-I.-A.-F.-C.-S.-A.-K.-J.-B.-Y.-P.-M.-A.;T. Sumi;K. Kamiya;D. Bennett;I. Bond-I.-Bo
通过引力微透镜测量恒星边缘变暗
DOI：
10.1086/376787
发表时间：
2003
期刊：
The Astrophysical Journal
影响因子：
--
作者：
D. Heyrovský
通讯作者：
D. Heyrovský
微透镜事件 OGLE 2004-BLG-482 中冷红巨星的肢体变暗测量
影响因子：
6.5
作者：
M. Zub;A. Cassan;D. Heyrovský;P. Fouqué;H. C. Stempels;M. Albrow;J. Beaulieu;S. Brillant;G. Christie;N. Kains;S. Kozłowski;D. Kubas;J. Wambsganss;V. Batista;D. Bennett;K. Cook;C. Coutures;S. Dieters;M. Dominik;D. Prester;J. Donatowicz;J. Greenhill;K. Horne;U. Jørgensen;S. Kane;J. Marquette;R. Martin;J. Menzies;K. Pollard;K. Sahu;C. Vinter;A. Williams;A. Gould;D. Depoy;A. Gal;B. Gaudi;C. Han;Y. Lipkin;D. Maoz;E. Ofek;B.;R. Pogge;J. Mccormick;A. Udalski;M. Szymański;M. Kubiak;G. Pietrzyński;I. Soszyński;O. Szewczyk;L. Wyrzykowski
通讯作者：
L. Wyrzykowski
OGLE 2004–BLG–254：由单个微透镜空间解析的 K3 III 银河核球巨星
影响因子：
6.5
作者：
A. Cassan;J. Beaulieu;P. Fouqué;S. Brillant;M. Dominik;J. Greenhill;D. Heyrovský;K. Horne;U. Jørgensen;D. Kubas;H. C. Stempels;C. Vinter;M. Albrow;D. Bennett;J. Caldwell;J. Calitz;K. Cook;C. Coutures;D. Dominis;J. Donatowicz;K. Hill;M. Hoffman;S. Kane;J. Marquette;R. Martin;P. Meintjes;J. Menzies;V. R. Miller;K. Pollard;K. Sahu;J. Wambsganss;A. Williams;A. Udalski;M. Szymański;M. Kubiak;G. Pietrzyński;I. Soszyński;K. Żebruń;O. Szewczyk;L. Wyrzykowski
通讯作者：
L. Wyrzykowski
DOI：
10.1046/j.1365-8711.2002.05607.x
发表时间：
2002
影响因子：
4.8
作者：
N. Rattenbury;I. Bond;I. Bond;J. Skuljan;P. Yock
通讯作者：
P. Yock