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Dostęp zamkniętyMagAO Observations of the Binary Microlens OGLE-2014-BLG-1050 Prefer the Higher-mass Solution
| dc.abstract.en | 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<SUB>E</SUB> led to two sets of solutions, either a ∼ (0.9, 0.35)M<SUB>⊙</SUB> binary at ∼3.5 kpc or a ∼(0.2, 0.07)M<SUB>⊙</SUB> 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 ${1.05}_{-0.07}^{+0.08}\,{M}_{\odot }$ primary and a ${0.38}_{-0.06}^{+0.07}{M}_{\odot }$ secondary at ${3.43}_{-0.21}^{+0.19}$ kpc. <SUP>*</SUP> This paper includes data gathered with the 6.5m Magellan Clay Telescope at Las Campanas Observatory, Chile. |
| dc.affiliation | Uniwersytet Warszawski |
| dc.contributor.author | Xie, Xiaojia |
| dc.contributor.author | Dong, Subo |
| dc.contributor.author | Zhu, Wei |
| dc.contributor.author | Gould, A. |
| dc.contributor.author | Udalski, Andrzej |
| dc.contributor.author | Beaulieu, J. -P. |
| dc.contributor.author | Close, L. M. |
| dc.contributor.author | Males, J. R. |
| dc.contributor.author | Marquette, J. -B. |
| dc.contributor.author | Morzinski, K. M. |
| dc.contributor.author | Pogge, R. W. |
| dc.contributor.author | Yee, J. C. |
| dc.date.accessioned | 2024-01-25T05:30:43Z |
| dc.date.available | 2024-01-25T05:30:43Z |
| dc.date.issued | 2021 |
| dc.description.finance | Publikacja bezkosztowa |
| dc.description.number | 3 |
| dc.description.volume | 161 |
| dc.identifier.doi | 10.3847/1538-3881/ABD6C0 |
| dc.identifier.issn | 0004-6256 |
| dc.identifier.uri | https://repozytorium.uw.edu.pl//handle/item/111658 |
| dc.identifier.weblink | http://adsabs.harvard.edu/abs/2021AJ....161..113X |
| dc.language | eng |
| dc.pbn.affiliation | astronomy |
| dc.relation.ispartof | Astronomical Journal |
| dc.relation.pages | 113 |
| dc.rights | ClosedAccess |
| dc.sciencecloud | nosend |
| dc.title | MagAO Observations of the Binary Microlens OGLE-2014-BLG-1050 Prefer the Higher-mass Solution |
| dc.type | JournalArticle |
| dspace.entity.type | Publication |