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  OGLE-2014-BLG-0289: Precise Characterization of a Quintuple-peak Gravitational Microlensing Event

Udalski, A., Han, C., Bozza, V., Gould, A., Bond, I. A., Mróz, P., et al. (2018). OGLE-2014-BLG-0289: Precise Characterization of a Quintuple-peak Gravitational Microlensing Event. The Astrophysical Journal, 853(1): 70. doi:10.3847/1538-4357/aaa295.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-31FC-A Version Permalink: http://hdl.handle.net/21.11116/0000-0003-CA6C-1
Genre: Journal Article

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 Creators:
Udalski, A., Author
Han, C., Author
Bozza, V., Author
Gould, A., Author
Bond, I. A., Author
Mróz, P., Author
Skowron, J., Author
Wyrzykowski, Ł., Author
Szymański, M. K., Author
Soszyński, I., Author
Ulaczyk, K., Author
Poleski, R., Author
Pietrukowicz, P., Author
Kozłowski, S., Author
Abe, F., Author
Barry, R., Author
Bennett, D. P., Author
Bhattacharya, A., Author
Donachie, M., Author
Evans, P., Author
Fukui, A., AuthorHirao, Y., AuthorItow, Y., AuthorKawasaki, K., AuthorKoshimoto, N., AuthorLi, M. C. A., AuthorLing, C. H., AuthorMasuda, K., AuthorMatsubara, Y., AuthorMiyazaki, S., AuthorMunakata, H., AuthorMuraki, Y., AuthorNagakane, M., AuthorOhnishi, K., AuthorRanc, C., AuthorRattenbury, N., AuthorSaito, T., AuthorSharan, A., AuthorSullivan, D. J., AuthorSumi, T., AuthorSuzuki, D., AuthorTristram, P. J., AuthorYamada, T., AuthorYonehara, A., AuthorStreet, R. A., AuthorTsapras, Y., AuthorBachelet, E., AuthorBramich, D. M., AuthorDÁgo, G., AuthorDominik, M., AuthorFiguera Jaimes, R. , AuthorHorne, K., AuthorHundertmark, M., AuthorKains, N., AuthorMenzies, J., AuthorSchmidt, R., AuthorSnodgrass, Colin1, Author              Steele, I. A., AuthorWambsganss, J., AuthorPogge, R. W., AuthorJung, Y. K., AuthorShin, I.-G., AuthorYee, J. C., AuthorKim, W.-T., AuthorBeichman, C., AuthorCarey, S., AuthorCalchi Novati, S. , AuthorZhu, W., Author more..
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 Abstract: We present the analysis of the binary-microlensing event OGLE-2014-BLG-0289. The event light curve exhibits five very unusual peaks, four of which were produced by caustic crossings and the other by a cusp approach. It is found that the quintuple-peak features of the light curve provide tight constraints on the source trajectory, enabling us to precisely and accurately measure the microlensing parallax ${\pi }_{{\rm{E}}}$. Furthermore, the three resolved caustics allow us to measure the angular Einstein radius ${\theta }_{{\rm{E}}}$. From the combination of ${\pi }_{{\rm{E}}}$ and ${\theta }_{{\rm{E}}}$, the physical lens parameters are uniquely determined. It is found that the lens is a binary composed of two M dwarfs with masses ${M}_{1}=0.52\pm 0.04\ {M}_{\odot }$ and ${M}_{2}=0.42\pm 0.03\ {M}_{\odot }$ separated in projection by ${a}_{\perp }=6.4\pm 0.5\,\mathrm{au}$. The lens is located in the disk with a distance of ${D}_{{\rm{L}}}=3.3\pm 0.3\,\mathrm{kpc}$. The reason for the absence of a lensing signal in the Spitzer data is that the time of observation corresponds to the flat region of the light curve.

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Language(s): eng - English
 Dates: 2019-03-192018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.3847/1538-4357/aaa295
 Degree: -

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Title: The Astrophysical Journal
Source Genre: Journal
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Publ. Info: Bristol; Vienna : IOP Publishing; IAEA
Pages: - Volume / Issue: 853 (1) Sequence Number: 70 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3