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ヨネハラ アツノリ
YONEHARA ATSUNORI
米原 厚憲 所属 京都産業大学 理学部 宇宙物理・気象学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2014/10 |
| 形態種別 | その他 |
| 標題 | CANDIDAIE GRAVITATIONAL MICROLENSING EVENTS FOR FUTURE DIRECT LENS IMAGING |
| 執筆形態 | その他 |
| 掲載誌名 | ASTROPHYSICAL JOURNAL |
| 出版社・発行元 | IOP PUBLISHING LTD |
| 巻・号・頁 | 794(1),pp.id. 71 (11 pp) |
| 著者・共著者 | C. B. Henderson,H. Park,T. Sumi,A. Udalski,A. Gould,Y. Tsapras,C. Han,B. S. Gaudi,V. Bozza,F. Abe,D. P. Bennett,I. A. Bond,C. S. Botzler,M. Freeman,A. Fukui,D. Fukunaga,Y. Itow,N. Koshimoto,C. H. Ling,K. Masuda,Y. Matsubara,Y. Muraki,S. Namba,K. Ohnishi,N. J. Rattenbury,To Saito,D. J. Sullivan,D. Suzuki,W. L. Sweatman,P. J. Tristram,N. Tsurumi,K. Wada,N. Yamai,P. C. M. Yock,A. Yonehara,M. K. Szymanski,M. Kubiak,G. Pietrzynski,I. Soszynski,J. Skowron,S. Kozlowski,R. Poleski,K. Ulaczyk,L. Wyrzykowski,P. Pietrukowicz,L. A. Almeida,M. Bos,J. -Y. Choi,G. W. Christie,D. L. Depoy,S. Dong,M. Friedmann,K. -H. Hwang,F. Jablonski,Y. K. Jung,S. Kaspi,C. -U. Lee,D. Maoz,J. McCormick,D. Moorhouse,T. Natusch,H. Ngan,R. W. Pogge,I. -G. Shin,Y. Shvartzvald,T. -G. Tan,G. Thornley,J. C. Yee,A. Allan,D. M. Bramich,P. Browne,M. Dominik,K. Horne,M. Hundertmark,R. Figuera Jaimes,N. Kains,C. Snodgrass,I. A. Steele,R. A. Street |
| 概要 | The mass of the lenses giving rise to Galactic microlensing events can be constrained by measuring the relative lenssource proper motion and lens flux. The flux of the lens can be separated from that of the source, companions to the source, and unrelated nearby stars with high-resolution images taken when the lens and source are spatially resolved. For typical ground-based adaptive optics (AO) or space-based observations, this requires either inordinately long time baselines or high relative proper motions. We provide a list of microlensing events toward the Galactic bulge with high relative lens-source proper motion that are therefore good candidates for constraining the lens mass with future high-resolution imaging. We investigate all events from 2004 to 2013 that display detectable finite-source effects, a feature that allows us to measure the proper motion. In total, we present 20 events with mu >= 8 mas yr(-1). Of these, 14 were culled from previous analyses while 6 are new, including OGLE-2004-BLG-368, MOA-2005-BLG-36, OGLE-2012-BLG-0211, OGLE-2012-BLG-0456, MOA-2012-BLG-532, and MOA-2013-BLG-029. In <= 12 yr from the time of each event the lens and source of each event will be sufficiently separated for ground-based telescopes with AO systems or space telescopes to resolve each component and further characterize the lens system. Furthermore, for the most recent events, comparison of the lens flux estimates from images taken immediately to those estimated from images taken when the lens and source are resolved can be used to empirically check the robustness of the single-epoch method currently being used to estimate lens masses for many events. |
| DOI | 10.1088/0004-637X/794/1/71 |
| ISSN | 0004-637X/1538-4357 |