| MICROLENSING BINARIES WITH CANDIDATE BROWN DWARF COMPANIONS | |
| Shin, IG; Han, C; Gould, A; Udalski, A; Sumi, T; Dominik, M; Beaulieu, JP; Tsapras, Y; Bozza, V; Szymanski, MK; Kubiak, M; Soszynski, I; Pietrzynski, G; Poleski, R; Ulaczyk, K; Pietrukowicz, P; Kozlowski, S; Skowron, J; Wyrzykowski, L; Abe, F; Bennett, DP; Bond, IA; Botzler, CS; Freeman, M; Fukui, A; Furusawa, K; Hayashi, F; Hearnshaw, JB; Hosaka, S; Itow, Y; Kamiya, K; Kilmartin, PM; Kobara, S; Korpela, A; Lin, W; Ling, CH; Makita, S; Masuda, K; Matsubara, Y; Miyake, N; Muraki, Y; Nagaya, M; Nishimoto, K; Ohnishi, K; Okumura, T; Omori, K; Perrott, YC; Rattenbury, N; Saito, T; Skuljan, L; Sullivan, DJ; Suzuki, D; Sweatman, WL; Tristram, PJ; Wada, K; Yock, PCM; Christie, GW; Depoy, DL; Dong, S; Gal-Yam, A; Gaudi, BS; Hung, LW; Janczak, J; Kaspi, S; Maoz, D; McCormick, J; McGregor, D; Moorhouse, D; Munoz, JA; Natusch, T; Nelson, C; Pogge, RW; Tan, TG; Polishook, D; Shvartzvald, Y; Shporer, A; Thornley, G; Malamud, U; Yee, JC; Choi, JY; Jung, YK; Park, H; Lee, CU; Park, BG; Koo, JR; Bajek, D; Bramich, DM; Browne, P; Horne, K; Ipatov, S; Snodgrass, C; Steele, I; Street, R; Alsubai, KA; Burgdorf, MJ; Novati, SC; Dodds, P; Dreizler, S; Fang XS(房祥松); Grundahl, F; Gu SH(顾盛宏); Hardis, S; Harpsoe, K; Hinse, TC; Hundertmark, M; Jessen-Hansen, J; Jorgensen, UG; Kains, N; Kerins, E; Liebig, C; Lund, M; Lundkvist, M; Mancini, L; Mathiasen, M; Hornstrup, A; Penny, MT; Proft, S; Rahvar, S; Ricci, D; Scarpetta, G; Skottfelt, J; Southworth, J; Surdej, J; Tregloan-Reed, J; Wertz, O; Zimmer, F; Albrow, MD; Batista, V; Brillant, S; Caldwell, JAR; Calitz, JJ; Cassan, A; Cole, A; Cook, KH; Corrales, E; Coutures, C; Dieters, S; Prester, DD; Donatowicz, J; Fouque, P; Greenhill, J; Hill, K; Hoffman, M; Kane, SR; Kubas, D; Marquette, JB; Martin, R; Meintjes, P; Menzies, J; Pollard, KR; Sahu, KC; Wambsganss, J; Williams, A; Vinter, C; Zub, M; Han, C (reprint author), Chungbuk Natl Univ, Inst Astrophys, Dept Phys, Chonju 371763, South Korea. | |
| 发表期刊 | ASTROPHYSICAL JOURNAL
 |
| 2012-12-01 | |
| 卷号 | 760期号:2 |
| DOI | 10.1088/0004-637X/760/2/116 |
| 产权排序 | 第45完成单位 |
| 收录类别 | SCI |
| 关键词 | Binaries: General Brown Dwarfs Gravitational Lensing: Micro |
| 摘要 | Brown dwarfs are important objects because they may provide a missing link between stars and planets, two populations that have dramatically different formation histories. In this paper, we present the candidate binaries with brown dwarf companions that are found by analyzing binary microlensing events discovered during the 2004-2011 observation seasons. Based on the low mass ratio criterion of q < 0.2, we found seven candidate events: OGLE-2004-BLG-035, OGLE-2004-BLG-039, OGLE-2007-BLG-006, OGLE-2007-BLG-399/MOA-2007-BLG-334, MOA-2011-BLG-104/OGLE-2011-BLG-0172, MOA-2011-BLG-149, and MOA-201-BLG-278/OGLE-2011-BLG-012N. Among them, we are able to confirm that the companions of the lenses of MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149 are brown dwarfs by determining the mass of the lens based on the simultaneous measurement of the Einstein radius and the lens parallax. The measured masses of the brown dwarf companions are 0.02 +/- 0.01 M-circle dot and 0.019 +/- 0.002 M-circle dot for MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149, respectively, and both companions are orbiting low-mass M dwarf host stars. More microlensing brown dwarfs are expected to be detected as the number of lensing events with well-covered light curves increases with new-generation searches. |
| 项目资助者 | National Research Foundation of Korea [2009-0081561] ; European Research Council under the European Community's Seventh Framework Programme/ERC [246678] ; JSPS [JSPS23540339, JSPS19340058] ; German Research Foundation (DFG) ; Qatar Foundation [NPRP 09-476-1-078] ; European Union Seventh Framework Programme [268421] ; Danish Natural Science Foundation ; NSF [AST-1103471] ; NASA [NNG04GL51G] ; National Science Foundation Graduate Research Fellowship [2009068160] ; NASA through the Sagan Fellowship Program ; Korea Astronomy and Space Science Institute (KASI) [2012-1-410-02] ; Marsden Fund of New Zealand ; [JSPS22403003] ; [JSPS23340064] ; [JSPS23340044] |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000311217000020 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | DIFFERENCE IMAGE-ANALYSIS ; III EWS DATABASE ; GALACTIC BULGE ; GRAVITATIONAL LENS ; OPTICAL DEPTH ; LIGHT CURVES ; STARS ; DISCOVERY ; PLANETS ; SEARCH |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5214 |
| 专题 | 恒星物理研究组 |
| 通讯作者 | Han, C (reprint author), Chungbuk Natl Univ, Inst Astrophys, Dept Phys, Chonju 371763, South Korea. |
| 推荐引用方式 GB/T 7714 | Shin, IG,Han, C,Gould, A,et al. MICROLENSING BINARIES WITH CANDIDATE BROWN DWARF COMPANIONS[J]. ASTROPHYSICAL JOURNAL,2012,760(2). |
| APA | Shin, IG.,Han, C.,Gould, A.,Udalski, A.,Sumi, T.,...&Han, C .(2012).MICROLENSING BINARIES WITH CANDIDATE BROWN DWARF COMPANIONS.ASTROPHYSICAL JOURNAL,760(2). |
| MLA | Shin, IG,et al."MICROLENSING BINARIES WITH CANDIDATE BROWN DWARF COMPANIONS".ASTROPHYSICAL JOURNAL 760.2(2012). |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| MICROLENSING BINARIE（1919KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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