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

Research output: Contribution to journal › Article › peer-review

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 \textasciitilde{} (0.9, 0.35)M⊙binary at \textasciitilde{}3.5 kpc or a \textasciitilde{}(0.2, 0.07)M⊙binary at \textasciitilde{}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",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "3",

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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.

UR - https://www.scopus.com/pages/publications/85101653995

UR - https://www.scopus.com/pages/publications/85101653995#tab=citedBy

U2 - 10.3847/1538-3881/abd6c0

DO - 10.3847/1538-3881/abd6c0

M3 - Article

AN - SCOPUS:85101653995

SN - 0004-6256

VL - 161

JO - Astronomical Journal

JF - Astronomical Journal

IS - 3

M1 - 4pp

ER -

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

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