OGLE-2017-BLG-0039: Microlensing Event with Light from a Lens Identified from 
Mass Measurement

Han, C.; Jung, Y. K.; Udalski, A.; Bond, I.; Bozza, V.; Albrow, M. D.; Chung, S. -J.; Gould, A.; Hwang, K. -H.; Kim, D.; Lee, C. -U.; Kim, H. -W.; Ryu, Y. -H.; Shin, I. -G.; Yee, J. C.; Shvartzvald, Y.; Cha, S. -M.; Kim, S. -L.; Kim, D. -J.; Lee, D. -J.; Lee, Y.; Park, B. -G.; Pogge, R. W.; Szymański, M. K.; Mróz, P.; Skowron, J.; Poleski, R.; Soszyński, I.; Kozłowski, S.; Pietrukowicz, P.; Ulaczyk, K.; Pawlak, M.; Abe, F.; Barry, R.; Bennett, D. P.; Bhattacharya, A.; Donachie, M.; Evans, P.; Fukui, A.; Hirao, Y.; Itow, Y.; Kawasaki, K.; Koshimoto, N.; Li, M. C. A.; Ling, C. H.; Matsubara, Y.; Miyazaki, S.; Munakata, H.; Muraki, Y.; Nagakane, M.; Ohnishi, K.; Ranc, C.; Rattenbury, N.; Saito, T.; Sharan, A.; Sullivan, D. J.; Sumi, T.; Suzuki, D.; Tristram, P. J.; Yamada, T.; Yonehara, A.

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OGLE-2017-BLG-0039: Microlensing Event with Light from a Lens Identified from Mass Measurement

MPS-Authors

Han, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jung, Y. K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Udalski, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bond, I.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bozza, V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Albrow, M. D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chung, S. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gould, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hwang, K. -H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee, C. -U.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, H. -W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ryu, Y. -H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shin, I. -G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yee, J. C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shvartzvald, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cha, S. -M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, S. -L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim, D. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee, D. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Park, B. -G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pogge, R. W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Szymański, M. K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mróz, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Skowron, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Poleski, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Soszyński, I.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kozłowski, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pietrukowicz, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ulaczyk, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pawlak, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Abe, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Barry, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bennett, D. P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bhattacharya, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Donachie, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Evans, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fukui, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hirao, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Itow, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kawasaki, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Koshimoto, N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Li, M. C. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ling, C. H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Matsubara, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Miyazaki, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Munakata, H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Muraki, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nagakane, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ohnishi, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ranc, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rattenbury, N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Saito, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sharan, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sullivan, D. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sumi, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Suzuki, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tristram, P. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yamada, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yonehara, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018ApJ...867..136H
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Citation

Han, C., Jung, Y. K., Udalski, A., Bond, I., Bozza, V., Albrow, M. D., et al. (2018). OGLE-2017-BLG-0039: Microlensing Event with Light from a Lens Identified from Mass Measurement. The Astrophysical Journal, 867.

Cite as: https://hdl.handle.net/21.11116/0000-0005-CD70-6

Abstract

We present an analysis of the caustic-crossing binary microlensing event OGLE-2017-BLG-0039. Thanks to the very long duration of the event, with a time scale t _E ̃ 130 days, the microlens parallax is measured precisely despite its low value of {π }_{{E}}̃ 0.06. Analysis of the well-resolved caustic crossings during the source star’s entrance and exit of the caustic yields an angular Einstein radius of {θ }_{{E}}̃ 0.6 mas. The measured {π }_{{E}} and {θ }_{{E}} indicate that the lens is a binary composed of two stars with masses ̃ 1.0 {M}_☉ and ̃0.15 M _☉, and is located at a distance of ̃6 kpc. From the color and brightness of the lens estimated from its determined mass and distance, it is expected that ̃2/3 of the I-band blended flux comes from the lens. Therefore, the event is a rare case of a bright lens event for which high-resolution follow-up observations can confirm its nature.