TRIPLE MICROLENS OGLE-2008-BLG-092L: BINARY STELLAR SYSTEM WITH A CIRCUMPRIMARY URANUS-TYPE PLANET

被引：67

作者：

Poleski, Radoslaw ^{[1
,2
]}

Skowron, Jan ^{[2
]}

Udalski, Andrzej ^{[2
]}

Han, Cheongho ^{[3
]}

Kozlowski, Szymon ^{[2
]}

Wyrzykowski, Lukasz ^{[2
,4
]}

Dong, Subo ^{[5
,6
]}

Szymanski, Michal K. ^{[2
]}

Kubiak, Marcin ^{[2
]}

Pietrzynski, Grzegorz ^{[2
,7
]}

Soszynski, Igor ^{[2
]}

Ulaczyk, Krzysztof ^{[2
]}

Pietrukowicz, Pawell ^{[2
]}

Gould, Andrew ^{[1
]}

机构：

[1] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

[2] Univ Warsaw Observ, PL-00478 Warsaw, Poland

[3] Chungbuk Natl Univ, Dept Phys, Cheongju 371763, South Korea

[4] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[5] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

[6] Inst Adv Study, Princeton, NJ 08540 USA

[7] Univ Concepcion, Dept Astron, Concepcion, Chile

来源：

ASTROPHYSICAL JOURNAL | 2014年 / 795卷 / 01期

基金：

欧洲研究理事会; 新加坡国家研究基金会; 美国国家科学基金会;

关键词：

binaries: general; gravitational lensing: micro; planets and satellites: detection; planets and satellites: dynamical evolution and stability; GRAVITATIONAL LENSING EXPERIMENT; JOVIAN-MASS PLANET; GALACTIC BULGE; OGLE-III; GIANT PLANETS; SNOW LINE; JUPITER/SATURN ANALOG; CHEMICAL EVOLUTION; IMAGE SUBTRACTION; HABITABLE ZONE;

D O I：

10.1088/0004-637X/795/1/42

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the gravitational microlensing discovery of a 4 M-Uranus planet that orbits a 0.7 M circle dot star at approximate to 18 AU. This is the first known analog of Uranus. Similar planets, i.e., cold ice giants, are inaccessible to either radial velocity or transit methods because of the long orbital periods, while low reflected light prevents direct imaging. We discuss how similar planets may contaminate the sample of the very short microlensing events that are interpreted as free-floating planets with an estimated rate of 1.8 per main-sequence star. Moreover, the host star has a nearby stellar (or brown dwarf) companion. The projected separation of the planet is only about three times smaller than that of the companion star, suggesting significant dynamical interactions.

引用

页数：8

共 6 条

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Szymanski, Michal K.
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Soszynski, Igor
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ASTRONOMICAL JOURNAL, 2020, 159 (02):
[2] OGLE-2023-BLG-0836L: The sixth microlensing planet in a binary stellar system
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[3] OGLE-2023-BLG-0836L: The sixth microlensing planet in a binary stellar system
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[4] OGLE-2023-BLG-0836L: The sixth microlensing planet in a binary stellar system
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[5] A Gas Giant Planet in the OGLE-2006-BLG-284L Stellar Binary System
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