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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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Udalski, A., Autor
Han, C., Autor
Bozza, V., Autor
Gould, A., Autor
Bond, I. A., Autor
Mróz, P., Autor
Skowron, J., Autor
Wyrzykowski, Ł., Autor
Szymański, M. K., Autor
Soszyński, I., Autor
Ulaczyk, K., Autor
Poleski, R., Autor
Pietrukowicz, P., Autor
Kozłowski, S., Autor
Abe, F., Autor
Barry, R., Autor
Bennett, D. P., Autor
Bhattacharya, A., Autor
Donachie, M., Autor
Evans, P., Autor
Fukui, A., AutorHirao, Y., AutorItow, Y., AutorKawasaki, K., AutorKoshimoto, N., AutorLi, M. C. A., AutorLing, C. H., AutorMasuda, K., AutorMatsubara, Y., AutorMiyazaki, S., AutorMunakata, H., AutorMuraki, Y., AutorNagakane, M., AutorOhnishi, K., AutorRanc, C., AutorRattenbury, N., AutorSaito, T., AutorSharan, A., AutorSullivan, D. J., AutorSumi, T., AutorSuzuki, D., AutorTristram, P. J., AutorYamada, T., AutorYonehara, A., AutorStreet, R. A., AutorTsapras, Y., AutorBachelet, E., AutorBramich, D. M., AutorDÁgo, G., AutorDominik, M., AutorFiguera Jaimes, R. , AutorHorne, K., AutorHundertmark, M., AutorKains, N., AutorMenzies, J., AutorSchmidt, R., AutorSnodgrass, Colin1, Autor           Steele, I. A., AutorWambsganss, J., AutorPogge, R. W., AutorJung, Y. K., AutorShin, I.-G., AutorYee, J. C., AutorKim, W.-T., AutorBeichman, C., AutorCarey, S., AutorCalchi Novati, S. , AutorZhu, W., Autor mehr..
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2019-03-192018
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.3847/1538-4357/aaa295
 Art des Abschluß: -

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Titel: The Astrophysical Journal
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Bristol; Vienna : IOP Publishing; IAEA
Seiten: - Band / Heft: 853 (1) Artikelnummer: 70 Start- / Endseite: - Identifikator: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3