OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement

Youn Kil Jung; Cheongho Han; Ian A. Bond; Andrzej Udalski; Andrew Gould; Michael D. Albrow; Sun Ju Chung; Kyu Ha Hwang; Chung Uk Lee; Yoon Hyun Ryu; In Gu Shin; Yossi Shvartzvald; Jennifer C. Yee; M. James Jee; Doeon Kim; Sang Mok Cha; Dong Jin Kim; Hyoun Woo Kim; Seung Lee Kim; Dong Joo Lee; Yongseok Lee; Byeong Gon Park; Richard W. Pogge; Fumio Abe; Richard Barry; David P. Bennett; Aparna Bhattacharya; Martin Donachie; Akihiko Fukui; Yuki Hirao; Yoshitaka Itow; Kohei Kawasaki; Iona Kondo; Naoki Koshimoto; Man Cheung Alex Li; Yutaka Matsubara; Yasushi Muraki; Shota Miyazaki; Masayuki Nagakane; Clément Ranc; Nicholas J. Rattenbury; Haruno Suematsu; Denis J. Sullivan; Takahiro Sumi; Daisuke Suzuki; Paul J. Tristram; Atsunori Yonehara; Przemek Mróz; Radek Poleski; Jan Skowron; Michał K. Szymański; Igor Soszyński; Szymon Kozłowski; Paweł Pietrukowicz; Krzysztof Ulaczyk; Michał Pawlak

doi:10.3847/1538-4357/ab001f

OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement

Youn Kil Jung, Cheongho Han, Ian A. Bond, Andrzej Udalski, Andrew Gould, Michael D. Albrow, Sun Ju Chung, Kyu Ha Hwang, Chung Uk Lee, Yoon Hyun Ryu, In Gu Shin, Yossi Shvartzvald, Jennifer C. Yee, M. James Jee, Doeon Kim, Sang Mok Cha, Dong Jin Kim, Hyoun Woo Kim, Seung Lee Kim, Dong Joo LeeYongseok Lee, Byeong Gon Park, Richard W. Pogge, Fumio Abe, Richard Barry, David P. Bennett, Aparna Bhattacharya, Martin Donachie, Akihiko Fukui, Yuki Hirao, Yoshitaka Itow, Kohei Kawasaki, Iona Kondo, Naoki Koshimoto, Man Cheung Alex Li, Yutaka Matsubara, Yasushi Muraki, Shota Miyazaki, Masayuki Nagakane, Clément Ranc, Nicholas J. Rattenbury, Haruno Suematsu, Denis J. Sullivan, Takahiro Sumi, Daisuke Suzuki, Paul J. Tristram, Atsunori Yonehara, Przemek Mróz, Radek Poleski, Jan Skowron, Michał K. Szymański, Igor Soszyński, Szymon Kozłowski, Paweł Pietrukowicz, Krzysztof Ulaczyk, Michał Pawlak

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

1 Citation (Scopus)

Abstract

We analyze the gravitational binary-lensing event OGLE-2016-BLG-0156, for which the lensing light curve displays pronounced deviations induced by microlens-parallax effects. The light curve exhibits three distinctive widely separated peaks and we find that the multiple-peak feature provides a very tight constraint on the microlensparallax effect, enabling us to precisely measure the microlens parallax π _E . All the peaks are densely and continuously covered from high-cadence survey observations using globally located telescopes and the analysis of the peaks leads to the precise measurement of the angular Einstein radius θ _E . From the combination of the measured π _E and θ _E , we determine the physical parameters of the lens. It is found that the lens is a binary composed of two M dwarfs with masses M ₁ = 0.18 ± 0.01Me and M ₂ =0.16 ± 0.01M _⊙ located at a distance D _L = 1.35 0.09 kpc. According to the estimated lens mass and distance, the flux from the lens comprises an important fraction, ∼25%, of the blended flux. The bright nature of the lens combined with the high relative lens-source motion, ϵ= 6.94 ± 0.50 mas yr ^?1 , suggests that the lens can be directly observed from future highresolution follow-up observations.

Original language	English
Article number	175
Journal	Astrophysical Journal
Volume	872
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ab001f
Publication status	Published - 2019

Bibliographical note

Funding Information:
Work by C.H. was supported by the grant (2017R1A4A1015178) of National Research Foundation of Korea. Work by A.G. was supported by US NSF grant AST-1516842. Work by I.G.S. and A.G. was supported by JPL grant 1500811. A.G. received support from the European Research Council under the European Union’s Seventh Framework Programme (FP 7) ERC Grant Agreement No.[321035]. The MOA project is supported by JSPS KAKENHI grant Nos. JSPS24253004, JSPS26247023, JSPS23340064, JSPS15H00781, and JP16H06287. Y.M. acknowledges the support by grant JP14002006. D.P.B., A.B., and C.R. were supported by NASA through grant NASA-80NSSC18K0274. The work by C.R. was supported by an appointment to the NASA Postdoctoral Program at the Goddard Space Flight Center, administered by USRA through a contract with NASA. N.J.R. is a Royal Society of New Zealand Rutherford Discovery Fellow. The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to A.U. This research has made use of the KMTNet system operated by the Korea Astronomy and Space Science Institute (KASI) and the data were obtained at three host sites of CTIO in Chile, SAAO in South Africa, and SSO in Australia. We acknowledge the high-speed internet service (KREONET) provided by the Korea Institute of Science and Technology Information (KISTI).

Publisher Copyright:
© 2019. The American Astronomical Society. All rights reserved.

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/1538-4357/ab001f

Cite this

Jung, Y. K., Han, C., Bond, I. A., Udalski, A., Gould, A., Albrow, M. D., Chung, S. J., Hwang, K. H., Lee, C. U., Ryu, Y. H., Shin, I. G., Shvartzvald, Y., Yee, J. C., Jee, M. J., Kim, D., Cha, S. M., Kim, D. J., Kim, H. W., Kim, S. L., ... Pawlak, M. (2019). OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement. Astrophysical Journal, 872(2), Article 175. https://doi.org/10.3847/1538-4357/ab001f

@article{b929d62cf8184223bc1740643b36fd7e,

title = "OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement",

abstract = " We analyze the gravitational binary-lensing event OGLE-2016-BLG-0156, for which the lensing light curve displays pronounced deviations induced by microlens-parallax effects. The light curve exhibits three distinctive widely separated peaks and we find that the multiple-peak feature provides a very tight constraint on the microlensparallax effect, enabling us to precisely measure the microlens parallax π E . All the peaks are densely and continuously covered from high-cadence survey observations using globally located telescopes and the analysis of the peaks leads to the precise measurement of the angular Einstein radius θ E . From the combination of the measured π E and θ E , we determine the physical parameters of the lens. It is found that the lens is a binary composed of two M dwarfs with masses M 1 = 0.18 ± 0.01Me and M 2 =0.16 ± 0.01M ⊙ located at a distance D L = 1.35 0.09 kpc. According to the estimated lens mass and distance, the flux from the lens comprises an important fraction, ∼25%, of the blended flux. The bright nature of the lens combined with the high relative lens-source motion, ϵ= 6.94 ± 0.50 mas yr ?1 , suggests that the lens can be directly observed from future highresolution follow-up observations.",

author = "Jung, {Youn Kil} and Cheongho Han and Bond, {Ian A.} and Andrzej Udalski and Andrew Gould and Albrow, {Michael D.} and Chung, {Sun Ju} and Hwang, {Kyu Ha} and Lee, {Chung Uk} and Ryu, {Yoon Hyun} and Shin, {In Gu} and Yossi Shvartzvald and Yee, {Jennifer C.} and Jee, {M. James} and Doeon Kim and Cha, {Sang Mok} and Kim, {Dong Jin} and Kim, {Hyoun Woo} and Kim, {Seung Lee} and Lee, {Dong Joo} and Yongseok Lee and Park, {Byeong Gon} and Pogge, {Richard W.} and Fumio Abe and Richard Barry and Bennett, {David P.} and Aparna Bhattacharya and Martin Donachie and Akihiko Fukui and Yuki Hirao and Yoshitaka Itow and Kohei Kawasaki and Iona Kondo and Naoki Koshimoto and {Cheung Alex Li}, Man and Yutaka Matsubara and Yasushi Muraki and Shota Miyazaki and Masayuki Nagakane and Cl{\'e}ment Ranc and Rattenbury, {Nicholas J.} and Haruno Suematsu and Sullivan, {Denis J.} and Takahiro Sumi and Daisuke Suzuki and Tristram, {Paul J.} and Atsunori Yonehara and Przemek Mr{\'o}z and Radek Poleski and Jan Skowron and Szyma{\'n}ski, {Micha{\l} K.} and Igor Soszy{\'n}ski and Szymon Koz{\l}owski and Pawe{\l} Pietrukowicz and Krzysztof Ulaczyk and Micha{\l} Pawlak",

note = "Funding Information: Work by C.H. was supported by the grant (2017R1A4A1015178) of National Research Foundation of Korea. Work by A.G. was supported by US NSF grant AST-1516842. Work by I.G.S. and A.G. was supported by JPL grant 1500811. A.G. received support from the European Research Council under the European Union{\textquoteright}s Seventh Framework Programme (FP 7) ERC Grant Agreement No.[321035]. The MOA project is supported by JSPS KAKENHI grant Nos. JSPS24253004, JSPS26247023, JSPS23340064, JSPS15H00781, and JP16H06287. Y.M. acknowledges the support by grant JP14002006. D.P.B., A.B., and C.R. were supported by NASA through grant NASA-80NSSC18K0274. The work by C.R. was supported by an appointment to the NASA Postdoctoral Program at the Goddard Space Flight Center, administered by USRA through a contract with NASA. N.J.R. is a Royal Society of New Zealand Rutherford Discovery Fellow. The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to A.U. This research has made use of the KMTNet system operated by the Korea Astronomy and Space Science Institute (KASI) and the data were obtained at three host sites of CTIO in Chile, SAAO in South Africa, and SSO in Australia. We acknowledge the high-speed internet service (KREONET) provided by the Korea Institute of Science and Technology Information (KISTI). Publisher Copyright: {\textcopyright} 2019. The American Astronomical Society. All rights reserved.",

year = "2019",

doi = "10.3847/1538-4357/ab001f",

language = "English",

volume = "872",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2",

}

Jung, YK, Han, C, Bond, IA, Udalski, A, Gould, A, Albrow, MD, Chung, SJ, Hwang, KH, Lee, CU, Ryu, YH, Shin, IG, Shvartzvald, Y, Yee, JC, Jee, MJ, Kim, D, Cha, SM, Kim, DJ, Kim, HW, Kim, SL, Lee, DJ, Lee, Y, Park, BG, Pogge, RW, Abe, F, Barry, R, Bennett, DP, Bhattacharya, A, Donachie, M, Fukui, A, Hirao, Y, Itow, Y, Kawasaki, K, Kondo, I, Koshimoto, N, Cheung Alex Li, M, Matsubara, Y, Muraki, Y, Miyazaki, S, Nagakane, M, Ranc, C, Rattenbury, NJ, Suematsu, H, Sullivan, DJ, Sumi, T, Suzuki, D, Tristram, PJ, Yonehara, A, Mróz, P, Poleski, R, Skowron, J, Szymański, MK, Soszyński, I, Kozłowski, S, Pietrukowicz, P, Ulaczyk, K & Pawlak, M 2019, 'OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement', Astrophysical Journal, vol. 872, no. 2, 175. https://doi.org/10.3847/1538-4357/ab001f

TY - JOUR

T1 - OGLE-2016-BLG-0156

T2 - Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement

AU - Jung, Youn Kil

AU - Han, Cheongho

AU - Bond, Ian A.

AU - Udalski, Andrzej

AU - Gould, Andrew

AU - Albrow, Michael D.

AU - Chung, Sun Ju

AU - Hwang, Kyu Ha

AU - Lee, Chung Uk

AU - Ryu, Yoon Hyun

AU - Shin, In Gu

AU - Shvartzvald, Yossi

AU - Yee, Jennifer C.

AU - Jee, M. James

AU - Kim, Doeon

AU - Cha, Sang Mok

AU - Kim, Dong Jin

AU - Kim, Hyoun Woo

AU - Kim, Seung Lee

AU - Lee, Dong Joo

AU - Lee, Yongseok

AU - Park, Byeong Gon

AU - Pogge, Richard W.

AU - Abe, Fumio

AU - Barry, Richard

AU - Bennett, David P.

AU - Bhattacharya, Aparna

AU - Donachie, Martin

AU - Fukui, Akihiko

AU - Hirao, Yuki

AU - Itow, Yoshitaka

AU - Kawasaki, Kohei

AU - Kondo, Iona

AU - Koshimoto, Naoki

AU - Cheung Alex Li, Man

AU - Matsubara, Yutaka

AU - Muraki, Yasushi

AU - Miyazaki, Shota

AU - Nagakane, Masayuki

AU - Ranc, Clément

AU - Rattenbury, Nicholas J.

AU - Suematsu, Haruno

AU - Sullivan, Denis J.

AU - Sumi, Takahiro

AU - Suzuki, Daisuke

AU - Tristram, Paul J.

AU - Yonehara, Atsunori

AU - Mróz, Przemek

AU - Poleski, Radek

AU - Skowron, Jan

AU - Szymański, Michał K.

AU - Soszyński, Igor

AU - Kozłowski, Szymon

AU - Pietrukowicz, Paweł

AU - Ulaczyk, Krzysztof

AU - Pawlak, Michał

N1 - Funding Information: Work by C.H. was supported by the grant (2017R1A4A1015178) of National Research Foundation of Korea. Work by A.G. was supported by US NSF grant AST-1516842. Work by I.G.S. and A.G. was supported by JPL grant 1500811. A.G. received support from the European Research Council under the European Union’s Seventh Framework Programme (FP 7) ERC Grant Agreement No.[321035]. The MOA project is supported by JSPS KAKENHI grant Nos. JSPS24253004, JSPS26247023, JSPS23340064, JSPS15H00781, and JP16H06287. Y.M. acknowledges the support by grant JP14002006. D.P.B., A.B., and C.R. were supported by NASA through grant NASA-80NSSC18K0274. The work by C.R. was supported by an appointment to the NASA Postdoctoral Program at the Goddard Space Flight Center, administered by USRA through a contract with NASA. N.J.R. is a Royal Society of New Zealand Rutherford Discovery Fellow. The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to A.U. This research has made use of the KMTNet system operated by the Korea Astronomy and Space Science Institute (KASI) and the data were obtained at three host sites of CTIO in Chile, SAAO in South Africa, and SSO in Australia. We acknowledge the high-speed internet service (KREONET) provided by the Korea Institute of Science and Technology Information (KISTI). Publisher Copyright: © 2019. The American Astronomical Society. All rights reserved.

PY - 2019

Y1 - 2019

N2 - We analyze the gravitational binary-lensing event OGLE-2016-BLG-0156, for which the lensing light curve displays pronounced deviations induced by microlens-parallax effects. The light curve exhibits three distinctive widely separated peaks and we find that the multiple-peak feature provides a very tight constraint on the microlensparallax effect, enabling us to precisely measure the microlens parallax π E . All the peaks are densely and continuously covered from high-cadence survey observations using globally located telescopes and the analysis of the peaks leads to the precise measurement of the angular Einstein radius θ E . From the combination of the measured π E and θ E , we determine the physical parameters of the lens. It is found that the lens is a binary composed of two M dwarfs with masses M 1 = 0.18 ± 0.01Me and M 2 =0.16 ± 0.01M ⊙ located at a distance D L = 1.35 0.09 kpc. According to the estimated lens mass and distance, the flux from the lens comprises an important fraction, ∼25%, of the blended flux. The bright nature of the lens combined with the high relative lens-source motion, ϵ= 6.94 ± 0.50 mas yr ?1 , suggests that the lens can be directly observed from future highresolution follow-up observations.

AB - We analyze the gravitational binary-lensing event OGLE-2016-BLG-0156, for which the lensing light curve displays pronounced deviations induced by microlens-parallax effects. The light curve exhibits three distinctive widely separated peaks and we find that the multiple-peak feature provides a very tight constraint on the microlensparallax effect, enabling us to precisely measure the microlens parallax π E . All the peaks are densely and continuously covered from high-cadence survey observations using globally located telescopes and the analysis of the peaks leads to the precise measurement of the angular Einstein radius θ E . From the combination of the measured π E and θ E , we determine the physical parameters of the lens. It is found that the lens is a binary composed of two M dwarfs with masses M 1 = 0.18 ± 0.01Me and M 2 =0.16 ± 0.01M ⊙ located at a distance D L = 1.35 0.09 kpc. According to the estimated lens mass and distance, the flux from the lens comprises an important fraction, ∼25%, of the blended flux. The bright nature of the lens combined with the high relative lens-source motion, ϵ= 6.94 ± 0.50 mas yr ?1 , suggests that the lens can be directly observed from future highresolution follow-up observations.

UR - http://www.scopus.com/inward/record.url?scp=85063540310&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063540310&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/ab001f

DO - 10.3847/1538-4357/ab001f

M3 - Article

AN - SCOPUS:85063540310

SN - 0004-637X

VL - 872

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 175

ER -

OGLE-2016-BLG-0156: Microlensing Event with Pronounced Microlens-parallax Effects Yielding a Precise Lens Mass Measurement

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this