SPITZER OBSERVATIONS OF OGLE-2015-BLG-1212 REVEAL A NEW PATH TOWARD BREAKING STRONG MICROLENS DEGENERACIES

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Title

SPITZER OBSERVATIONS OF OGLE-2015-BLG-1212 REVEAL A NEW PATH TOWARD BREAKING STRONG MICROLENS DEGENERACIES

Content partner

The University of Auckland Library

Collection

ResearchSpace@Auckland

Description

Spitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable models survive out of an initial set of 32 local minima in the parameter space. These models clearly indicate that the lens is a stellar binary system possibly located within the bulge of our Galaxy, ruling out the planetary alternative. We argue that several types of discr...

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Format

Research paper

Research format

Journal article

Date created

2016-03-20

Creator

Bozza, V / Shvartzvald, Y / Udalski, A / Novati, S Calchi / Bond, IA / Han, C / Hundertmark, M / Poleski, R / Pawlak, M / Szymański, MK / Skowron, J / Mróz, P / Kozłowski, S / Wyrzykowski, Ł / Pietrukowicz, P / Soszyński, I / Ulaczyk, K / Beichman, C / Bryden, G / Carey, S / Fausnaugh, M / Gaudi, BS / Gould, A / Henderson, CB / Pogge, RW / Wibking, B / Yee, JC / Zhu, W / Abe, F / Asakura, Y / Barry, RK / Bennett, DP / Bhattacharya, A / Donachie, M / Freeman, M / Fukui, A / Hirao, Y / Inayama, K / Itow, Y / Koshimoto, N / Li, MCA / Ling, CH / Masuda, K / Matsubara, Y / Muraki, Y / Nagakane, M / Nishioka, T / Ohnishi, K / Oyokawa, H / Rattenbury, N / Saito, To / Sharan, A / Sullivan, DJ / Sumi, T / Suzuki, D / Tristram, PJ / Wakiyama, Y / Yonehara, A / Choi, J-Y / Park, H / Jung, YK / Shin, I-G / Albrow, MD / Park, B-G / Kim, S-L / Lee, C-U / Cha, S-M / Kim, D-J / Lee, Y / Dominik, M / Jørgensen, UG / Andersen, MI / Bramich, DM / Burgdorf, MJ / Ciceri, S / D’Ago, G / Evans, DF / Jaimes, R Figuera / Gu, S-H / Hinse, TC / Kains, N / Kerins, E / Korhonen, H / Kuffmeier, M / Mancini, L / Popovas, A / Rabus, M / Rahvar, S / Rasmussen, RT / Scarpetta, G / Skottfelt, J / Snodgrass, C / Southworth, J / Surdej, J / Unda-Sanzana, E / von Essen, C / Wang, Y-B / Wertz, O / Maoz, D / Friedmann, M / Kaspi, S

URL

https://hdl.handle.net/2292/63213

Related subjects

Science & Technology / Physical Sciences / Astronomy & Astrophysics / binaries: general / Galaxy: bulge / gravitational lensing: micro / planets and satellites: detection / space vehicles / GRAVITATIONAL LENSING EXPERIMENT / GALACTIC BULGE / OGLE-III / BINARY / EVENTS / SATELLITE / PARALLAXES / PHOTOMETRY / SYSTEMS / STARS / astro-ph.EP / 0201 Astronomical and Space Sciences / 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics / 0306 Physical Chemistry (incl. Structural)

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