Arid
DOI10.1051/0004-6361/201730928
A companion on the planet/brown dwarf mass boundary on a wide orbit discovered by gravitational microlensing
Poleski, R.1,2; Udalski, A.2; Bond, I. A.3; Beaulieu, J. P.4,5,6,7; Clanton, C.8; Gaudi, S.1; Szymanski, M. K.2; Soszynski, I.2; Pietrukowicz, P.2; Kozlowski, Szymon2; Skowron, J.2; Wyrzykowski, L.2; Ulaczyk, K.2,9; Bennett, D. P.10; Sumi, T.11; Suzuki, D.10; Rattenbury, N. J.12; Koshimoto, N.11; Abe, F.13; Asakura, Y.13; Barry, R. K.10; Bhattacharya, A.10,14; Donachie, M.12; Evans, P.12; Fukui, A.15; Hirao, Y.11; Itow, Y.13; Li, M. C. A.12; Ling, C. H.3; Masuda, K.13; Matsubara, Y.13; Muraki, Y.13; Nagakane, M.; Ohnishi, K.16; Ranc, C.10; Saito, To17; Sharan, A.12; Sullivan, D. J.18; Tristram, P. J.19; Yamada, T.; Yamada, T.20; Yonehara, A.20; Batista, V.4,5; Marquette, J. B.4,5
通讯作者Poleski, R.
来源期刊ASTRONOMY & ASTROPHYSICS
ISSN1432-0746
出版年2017
卷号604
英文摘要

We present the discovery of a substellar companion to the primary host lens in the microlensing event MOA-2012-BLG-006. The companion-to-host mass ratio is 0.016, corresponding to a companion mass of approximate to 8 M-Jup(M-*/0.5 M-circle dot). Thus, the companion is either a high-mass giant planet or a low-mass brown dwarf, depending on the mass of the primary M-*. The companion signal was separated from the peak of the primary event by a time that was as much as four times longer than the event timescale. We therefore infer a relatively large projected separation of the companion from its host of approximate to 10 au(M-*/0.5 M-circle dot)(1/2) for a wide range (3-7 kpc) of host star distances from the Earth. We also challenge a previous claim of a planetary companion to the lens star in microlensing event OGLE-2002-BLG-045.


英文关键词gravitational lensing: micro instrumentation: high angular resolution planetary systems brown dwarfs
类型Article
语种英语
国家USA ; Poland ; New Zealand ; France ; Australia ; England ; Japan
收录类别SCI-E
WOS记录号WOS:000408480100123
WOS关键词GALACTIC BULGE ; LENSING EXPERIMENT ; NEPTUNE-MASS ; EVENT ; BINARY ; PLANETS ; DESERT ; PREDICTIONS ; POPULATION ; EFFICIENT
WOS类目Astronomy & Astrophysics
WOS研究方向Astronomy & Astrophysics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197589
作者单位1.Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA;
2.Univ Warsaw Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland;
3.Massey Univ, Inst Nat & Math Sci, Private Bag 102904 North Shore Mail Ctr, Auckland 0745, New Zealand;
4.UPMC Univ Paris 6, Sorbonne Univ, 98bis Bd Arago, F-75014 Paris, France;
5.Inst Astrophys Paris, CNRS, UMR 7095, 98bis Bd Arago, F-75014 Paris, France;
6.LESIA Observ Paris, Sect Meudon, 5 Pl Jules Janssen, F-92195 Meudon, France;
7.Univ Tasmania, Sch Phys Sci, Private Bag 37 Hobart, Hobart 7001, Australia;
8.NASA, Ames Res Ctr, Space Sci & Astrobiol Div, Moffett Field, CA 94035 USA;
9.Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England;
10.NASA, Goddard Space Flight Ctr, Lab Exoplanets & Stellar Astrophys, Greenbelt, MD 20771 USA;
11.Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, 1-1 Machikaneyama, Osaka 5600043, Japan;
12.Univ Auckland, Dept Phys, Private Bag 92019, Auckland, New Zealand;
13.Nagoya Univ, Inst Space Earth Environm Res, Furo Cho, Nagoya, Aichi 4648601, Japan;
14.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA;
15.Okayama Astrophys Natl Astron Observ, 3037-5 Honjo, Okayama 7190232, Japan;
16.Nagano Natl Coll Technol, Nagano 3818550, Japan;
17.Tokyo Metropolitan Coll Ind Technol, Tokyo 1168523, Japan;
18.Victoria Univ, Sch Chem & Phys Sci, Wellington, New Zealand;
19.Univ Canterbury Mt John Observ, POB 56, Lake Tekapo 7945, New Zealand;
20.Kyoto Sangyo Univ, Dept Phys, Fac Sci, Kyoto 6038555, Japan
推荐引用方式
GB/T 7714
Poleski, R.,Udalski, A.,Bond, I. A.,et al. A companion on the planet/brown dwarf mass boundary on a wide orbit discovered by gravitational microlensing[J],2017,604.
APA Poleski, R..,Udalski, A..,Bond, I. A..,Beaulieu, J. P..,Clanton, C..,...&Marquette, J. B..(2017).A companion on the planet/brown dwarf mass boundary on a wide orbit discovered by gravitational microlensing.ASTRONOMY & ASTROPHYSICS,604.
MLA Poleski, R.,et al."A companion on the planet/brown dwarf mass boundary on a wide orbit discovered by gravitational microlensing".ASTRONOMY & ASTROPHYSICS 604(2017).
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