MICROLENSING BINARIES DISCOVERED THROUGH HIGH-MAGNIFICATION CHANNEL
MICROLENSING BINARIES DISCOVERED THROUGH HIGH-MAGNIFICATION CHANNEL
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通过高倍放大通道发现的微透镜双星
DOI：
10.1088/0004-637x/746/2/127
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Shin I
中科院分区：
文献类型：
--
作者：
Shin I
微透镜可以提供一个有用的工具，探测到低质量极限的二进制同伴的二进制分布。本文分析了2007 - 2010年期间通过高倍率事件通道探测到的8个双星透镜事件的光变曲线。这些扰动局限在光变曲线的峰值附近，可以很容易地与行星引起的中心扰动区分开来。然而，对于三个事件，在3σ置信水平下不能解决封闭和宽二元解之间的简并性，这意味着简并性将是研究二元分布的一个重要障碍。的透镜参数的退化的依赖性是一致的理论预测，退化变得严重的二元分离和质量比偏离共振焦散线的值。OGLE-2008-BLG-510/MOA-2008-BLG-369的测量质量比为q = 0.1，使得透镜的伴星成为强棕矮星候选者。
Microlensing can provide a useful tool to probe binary distributions down to low-mass limits of binary companions. In this paper, we analyze the light curves of eight binary-lensing events detected through the channel of high-magnification events during the seasons from 2007 to 2010. The perturbations, which are confined near the peak of the light curves, can be easily distinguished from the central perturbations caused by planets. However, the degeneracy between close and wide binary solutions cannot be resolved with a 3σ confidence level for three events, implying that the degeneracy would be an important obstacle in studying binary distributions. The dependence of the degeneracy on the lensing parameters is consistent with a theoretical prediction that the degeneracy becomes severe as the binary separation and the mass ratio deviate from the values of resonant caustics. The measured mass ratio of the event OGLE-2008-BLG-510/MOA-2008-BLG-369 is q∼ 0.1, making the companion of the lens a strong brown dwarf candidate.
具有透镜轨道运动显着影响的引力双透镜事件
DOI：
10.1088/0004-637x/778/2/134
发表时间：
2013
期刊：
The Astrophysical Journal
影响因子：
--
作者：
H. Park;A. Udalski;C. Han;A. Gould;J. Beaulieu;Y. Tsapras;M. Szyma'nski;M. Kubiak;I. Soszy'nski;G. Pietrzy'nski;R. Poleski;K. Ulaczyk;P. Pietrukowicz;S. Kozłowski;J. Skowron;Ł. Wyrzykowski;J.;D. Depoy;S. Dong;B. Gaudi;K. Hwang;Y. Jung;A. Kavka;C.‐U. Lee;L. Monard;B.;R. Pogge;I. Porritt;I. Shin;J. Yee;M. Albrow;D. Bennett;J. Caldwell;A. Cassan;C. Coutures;D. Dominis;J. Donatowicz;P. Fouqu'e;J. Greenhill;M. Huber;U. Jørgensen;S. Kane;D. Kubas;J. Marquette;J. Menzies;C. Pitrou;K. Pollard;K. Sahu;J. Wambsganss;A. Williams;M. Zub;A. Allan;D. Bramich;P. Browne;M. Dominik;K. Horne;M. Hundertmark;N. Kains;C. Snodgrass;I. Steele;R. Street
通讯作者：
R. Street