OGLE-2008-BLG-510: First automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?
OGLE-2008-BLG-510: First automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?
复制标题
OGLE-2008-BLG-510：首次自动实时检测弱微透镜异常 - 棕矮星还是双星？
DOI：
10.1111/j.1365-2966.2012.21233.x
复制
发表时间：
2008
影响因子：
4.8
通讯作者：
中科院分区：
文献类型：
--
作者：
微透镜事件OGLE-2008-BLG-510的特征是峰值形状明显不对称，由自动机器人系外行星微透镜搜索系统(ARTEMIS)实时检测到。光线曲线的偏斜度似乎与双透镜和双源模型都是兼容的，包括透镜系统由一颗围绕棕矮星运行的M矮星组成的可能性。对这一微透镜异常的检测和我们的分析表明：(1)自动实时检测具有即时反馈的微弱微透镜异常是可行的、高效的和灵敏的，(2)相当常见的弱特征本质上带有不容易从光度学光曲线解决的模糊性，(3)需要找到参数空间的所有特征而不仅仅是“最喜欢的模型”的建模方法，(4)数据质量是最关键的，其中系统学可能与真实特征混淆，特别是小的高阶效应，如轨道运动特征。此外，很明显，特征较弱的事件是统计研究的银矿，尽管不容易开发。关于棕矮星伴星和双源微透镜事件明显稀少的线索可能隐藏在这里。
The microlensing event OGLE-2008-BLG-510 is characterized by an evident asymmetric shape of the peak, promptly detected by the Automated Robotic Terrestrial Exoplanet Microlensing Search (ARTEMiS) system in real time. The skewness of the light curve appears to be compatible both with binary-lens and binary-source models, including the possibility that the lens system consists of an M dwarf orbited by a brown dwarf. The detection of this microlensing anomaly and our analysis demonstrate that: (1) automated real-time detection of weak microlensing anomalies with immediate feedback is feasible, efficient and sensitive, (2) rather common weak features intrinsically come with ambiguities that are not easily resolved from photometric light curves, (3) a modelling approach that finds all features of parameter space rather than just the ‘favourite model’ is required and (4) the data quality is most crucial, where systematics can be confused with real features, in particular small higher order effects such as orbital motion signatures. It moreover becomes apparent that events with weak signatures are a silver mine for statistical studies, although not easy to exploit. Clues about the apparent paucity of both brown-dwarf companions and binary-source microlensing events might hide here.
登录
查看更多内容
影响因子：
6.5
作者：
Tubbs, RN;Baldwin, JE;Cox, GC
通讯作者：
Cox, GC
DOI：
--
发表时间：
1998
期刊：
影响因子：
--
作者：
C. Han;Y. Jeong
通讯作者：
Y. Jeong
Macho 项目：来自银河系核球第一年数据的 45 个候选微透镜事件
DOI：
--
发表时间：
1995
期刊：
影响因子：
--
作者：
C. Alcock;C. Alcock;R. Allsman;D. Alves;T. Axelrod;T. Axelrod;D. Bennett;D. Bennett;K. Cook;K. Cook;Kenneth C. Freeman;K. Griest;K. Griest;J. Guern;J. Guern;M. Lehner;M. Lehner;S. Marshall;S. Marshall;H. Park;Saul Perlmutter;B. Peterson;M. Pratt;M. Pratt;P. Quinn;A. Rodgers;C. Stubbs;C. Stubbs;C. Stubbs;W. Sutherland
通讯作者：
W. Sutherland
PLANET微透镜后续网络：太阳系外行星探测的结果和前景
DOI：
--
发表时间：
1999
期刊：
影响因子：
--
作者：
M. Dominik;M. Albrow;J. Beaulieu;J. Caldwell;D. Depoy;B. Gaudi;A. Gould;J. Greenhill;K. Hill;S. Kane;R. Martin;J. Menzies;R. M. Naber;J. Pel;R. Pogge;K. Pollard;P. Sackett;K. Sahu;P. Vermaak;R. Watson;A. Williams;T. P. Collaboration
通讯作者：
T. P. Collaboration
影响因子：
0.9
作者：
M. Dominik;U. Jørgensen;N. Rattenbury;M. Mathiasen;T. Hinse;T. Hinse;S. Novati;K. Harpsoe;V. Bozza;T. Anguita;M. Burgdorf;K. Horne;M. Hundertmark;E. Kerins;P. Kjærgaard;C. Liebig;L. Mancini;G. Masi;S. Rahvar;D. Ricci;G. Scarpetta;C. Snodgrass;J. Southworth;R. Street;J. Surdej;C. Thöne;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub
通讯作者：
M. Dominik;U. Jørgensen;N. Rattenbury;M. Mathiasen;T. Hinse;T. Hinse;S. Novati;K. Harpsoe;V. Bozza;T. Anguita;M. Burgdorf;K. Horne;M. Hundertmark;E. Kerins;P. Kjærgaard;C. Liebig;L. Mancini;G. Masi;S. Rahvar;D. Ricci;G. Scarpetta;C. Snodgrass;J. Southworth;R. Street;J. Surdej;C. Thöne;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub