MagAO Observations of the binary microlens OGLE-2014-BLG-1050 prefer the higher-mass solution

Xiaojia Xie; Subo Dong; Wei Zhu; A. Gould; A. Udalski; J. P. Beaulieu; L. M. Close; J. R. Males; J. B. Marquette; K. M. Morzinski; R. W. Pogge; J. C. Yee

doi:10.3847/1538-3881/abd6c0

MagAO Observations of the binary microlens OGLE-2014-BLG-1050 prefer the higher-mass solution

Xiaojia Xie, Subo Dong, Wei Zhu, A. Gould, A. Udalski, J. P. Beaulieu, L. M. Close, J. R. Males, J. B. Marquette, K. M. Morzinski, R. W. Pogge, J. C. Yee

Astronomy

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Abstract

We report adaptive optics (AO) follow-up imaging of OGLE-2014-BLG-1050, which is the second binary microlensing event with space-based parallax measurements. The degeneracy in microlens parallax π_Eled to two sets of solutions, either a ~ (0.9, 0.35)M_⊙binary at ~3.5 kpc or a ~(0.2, 0.07)M_⊙binary at ~1.1 kpc. We measure the flux blended with the microlensed source by conducting Magellan AO observations, and find that the blending is consistent with the predicted lens flux from the higher-mass solution. From the combination of the AO flux measurement together with previous lensing constraints, it is estimated that the lens system consists of a -1.05^+0.08_-0.07primary and a 0.38^+0.07_-0.06M_⊙secondary at - 3.43^+0.19_-0.21kpc.

Original language	English (US)
Article number	4pp
Journal	Astronomical Journal
Volume	161
Issue number	3
DOIs	https://doi.org/10.3847/1538-3881/abd6c0
State	Published - Mar 1 2021

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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@article{9503f7adc5734a49bcc18b7c30928225,

title = "MagAO Observations of the binary microlens OGLE-2014-BLG-1050 prefer the higher-mass solution",

abstract = "We report adaptive optics (AO) follow-up imaging of OGLE-2014-BLG-1050, which is the second binary microlensing event with space-based parallax measurements. The degeneracy in microlens parallax πEled to two sets of solutions, either a ~ (0.9, 0.35)M⊙binary at ~3.5 kpc or a ~(0.2, 0.07)M⊙binary at ~1.1 kpc. We measure the flux blended with the microlensed source by conducting Magellan AO observations, and find that the blending is consistent with the predicted lens flux from the higher-mass solution. From the combination of the AO flux measurement together with previous lensing constraints, it is estimated that the lens system consists of a -1.05+0.08-0.07primary and a 0.38+0.07-0.06M⊙secondary at - 3.43+0.19-0.21kpc.",

author = "Xiaojia Xie and Subo Dong and Wei Zhu and A. Gould and A. Udalski and Beaulieu, {J. P.} and Close, {L. M.} and Males, {J. R.} and Marquette, {J. B.} and Morzinski, {K. M.} and Pogge, {R. W.} and Yee, {J. C.}",

year = "2021",

month = mar,

day = "1",

doi = "10.3847/1538-3881/abd6c0",

language = "English (US)",

volume = "161",

journal = "Astronomical Journal",

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TY - JOUR

T1 - MagAO Observations of the binary microlens OGLE-2014-BLG-1050 prefer the higher-mass solution

AU - Xie, Xiaojia

AU - Dong, Subo

AU - Zhu, Wei

AU - Gould, A.

AU - Udalski, A.

AU - Beaulieu, J. P.

AU - Close, L. M.

AU - Males, J. R.

AU - Marquette, J. B.

AU - Morzinski, K. M.

AU - Pogge, R. W.

AU - Yee, J. C.

PY - 2021/3/1

Y1 - 2021/3/1

N2 - We report adaptive optics (AO) follow-up imaging of OGLE-2014-BLG-1050, which is the second binary microlensing event with space-based parallax measurements. The degeneracy in microlens parallax πEled to two sets of solutions, either a ~ (0.9, 0.35)M⊙binary at ~3.5 kpc or a ~(0.2, 0.07)M⊙binary at ~1.1 kpc. We measure the flux blended with the microlensed source by conducting Magellan AO observations, and find that the blending is consistent with the predicted lens flux from the higher-mass solution. From the combination of the AO flux measurement together with previous lensing constraints, it is estimated that the lens system consists of a -1.05+0.08-0.07primary and a 0.38+0.07-0.06M⊙secondary at - 3.43+0.19-0.21kpc.

AB - We report adaptive optics (AO) follow-up imaging of OGLE-2014-BLG-1050, which is the second binary microlensing event with space-based parallax measurements. The degeneracy in microlens parallax πEled to two sets of solutions, either a ~ (0.9, 0.35)M⊙binary at ~3.5 kpc or a ~(0.2, 0.07)M⊙binary at ~1.1 kpc. We measure the flux blended with the microlensed source by conducting Magellan AO observations, and find that the blending is consistent with the predicted lens flux from the higher-mass solution. From the combination of the AO flux measurement together with previous lensing constraints, it is estimated that the lens system consists of a -1.05+0.08-0.07primary and a 0.38+0.07-0.06M⊙secondary at - 3.43+0.19-0.21kpc.

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JO - Astronomical Journal

JF - Astronomical Journal

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M1 - 4pp

ER -

MagAO Observations of the binary microlens OGLE-2014-BLG-1050 prefer the higher-mass solution

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