MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary

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Title

MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary

Content partner

The University of Auckland Library

Collection

ResearchSpace@Auckland

Description

We report on the discovery and analysis of the short-timescale binary-lens microlensing event, MOA-2015-BLG-337. The lens system could be a planetary system with a very low-mass host, around the brown dwarf (BD)/planetary-mass boundary, or a BD binary. We found two competing models that explain the observed light curves with companion/host mass ratios of q ∼ 0.01 and ∼0.17, respectively. A significant finite source effect in the best-fit planetary model (q ∼ 0.01) reveals a small angular Eins...

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Format

Research paper

Research format

Journal article

Date created

2018-09-01

Creator

Miyazaki, S / Sumi, T / Bennett, DP / Gould, A / Udalski, A / Bond, IA / Koshimoto, N / Nagakane, M / Rattenbury, N / Abe, F / Bhattacharya, A / Barry, R / Donachie, M / Fukui, A / Hirao, Y / Itow, Y / Kawasaki, K / Li, MCA / Ling, CH / Matsubara, Y / Matsuo, T / Muraki, Y / Ohnishi, K / Ranc, C / Saito, T / Sharan, A / Shibai, H / Suematsu, H / Suzuki, D / Sullivan, DJ / Tristram, PJ / Yamada, T / Yonehara, A / KozŁowski, S / Mróz, P / Pawlak, M / Poleski, R / Pietrukowicz, P / Skowron, J / Soszyński, I / Szymański, MK / Ulaczyk, K / Albrow, MD / Chung, S-J / Han, C / Jung, YK / Hwang, K-H / Ryu, Y-H / Shin, I-G / Shvartzvald, Y / Yee, JC / Zang, W / Zhu, W / Cha, S-M / Kim, D-J / Kim, H-W / Kim, S-L / Lee, C-U / Lee, D-J / Lee, Y / Park, B-G / Pogge, RW

URL

https://hdl.handle.net/2292/63107

Related subjects

Science & Technology / Physical Sciences / Astronomy & Astrophysics / brown dwarfs / gravitational lensing: micro / planetary systems / MAGNIFICATION MICROLENSING EVENTS / DIFFERENCE IMAGE-ANALYSIS / GALACTIC BULGE / EXTRASOLAR PLANETS / GREAT ESCAPE / GAS GIANTS / SNOW LINE / STARS / PHOTOMETRY / EXOPLANETS / astro-ph.EP / 0201 Astronomical and Space Sciences

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