THE SPITZER MICROLENSING PROGRAM AS A PROBE FOR GLOBULAR CLUSTER PLANETS: ANALYSIS OF OGLE-2015-BLG-0448

doi:10.3847/0004-637X/823/1/63

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	THE SPITZER MICROLENSING PROGRAM AS A PROBE FOR GLOBULAR CLUSTER PLANETS: ANALYSIS OF OGLE-2015-BLG-0448
	Poleski,Rados?aw 2,3; Zhu,Wei 2; Christie,Grant W.4; Udalski,Andrzej 3; Gould,Andrew 2,5,6; Bachelet,Etienne 7; Skottfelt,Jesper 1,8; Novati,Sebastiano Calchi 9,10,11; Szymański,M. K.3; Soszyński,I.3
刊名	The Astrophysical Journal
	2016-05-23
卷号	823 期号:1
关键词	globular clusters: individual (NGC6558) gravitational lensing: micro planets and satellites: detection proper motions
ISSN号	0004-637X
DOI	10.3847/0004-637X/823/1/63
英文摘要	ABSTRACT The microlensing event OGLE-2015-BLG-0448 was observed by Spitzer and lay within the tidal radius of the globular cluster NGC 6558. The event had moderate magnification and was intensively observed, hence it had the potential to probe the distribution of planets in globular clusters. We measure the proper motion of NGC 6558 ( μ cl ( N , E ) = ( + 0.36 ± 0.10 , + 1.42 ± 0.10 ) mas yr ? 1 ) as well as the source and show that the lens is not a cluster member. Even though this particular event does not probe the distribution of planets in globular clusters, other potential cluster lens events can be verified using our methodology. Additionally, we find that microlens parallax measured using Optical Gravitational Lens Experiment (OGLE) photometry is consistent with the value found based on the light curve displacement between the Earth and Spitzer.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-823-1-63
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/36141]
专题	中国科学院国家天文台
作者单位	1.Niels Bohr Institute & Centre for Star and Planet Formation, University of Copenhagen, ?ster Voldgade 5, DK-1350—Copenhagen K, Denmark 2.Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA; poleski.1@osu.edu 3.Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland 4.Auckland Observatory, Auckland, New Zealand 5.Max-Planck-Institute for Astronomy, K?nigstuhl 17, D-69117 Heidelberg, Germany 6.Korea Astronomy and Space Science Institute, Daejon 305-348, Republic of Korea 7.Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Goleta, CA 93117, USA 8.Centre for Electronic Imaging, Department of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK 9.NASA Exoplanet Science Institute, MS 100-22, California Institute of Technology, Pasadena, CA 91125, USA 10.10Dipartimento di Fisica “E.R. Caianiello,” Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano, Italy
推荐引用方式 GB/T 7714	Poleski,Rados?aw,Zhu,Wei,Christie,Grant W.,et al. THE SPITZER MICROLENSING PROGRAM AS A PROBE FOR GLOBULAR CLUSTER PLANETS: ANALYSIS OF OGLE-2015-BLG-0448[J]. The Astrophysical Journal,2016,823(1).
APA	Poleski,Rados?aw.,Zhu,Wei.,Christie,Grant W..,Udalski,Andrzej.,Gould,Andrew.,...&Wertz,O..(2016).THE SPITZER MICROLENSING PROGRAM AS A PROBE FOR GLOBULAR CLUSTER PLANETS: ANALYSIS OF OGLE-2015-BLG-0448.The Astrophysical Journal,823(1).
MLA	Poleski,Rados?aw,et al."THE SPITZER MICROLENSING PROGRAM AS A PROBE FOR GLOBULAR CLUSTER PLANETS: ANALYSIS OF OGLE-2015-BLG-0448".The Astrophysical Journal 823.1(2016).