J/AJ/161/270 OGLE, MOA & KMTNet RI light curve of KMT-2019-BLG-1715 (Han+, 2021)
KMT-2019-BLG-1715: planetary microlensing event with three lens masses and two
source stars.
Han C., Udalski A., Kim D., Kil Jung Y., Lee C.-U., Bond I.A., Albrow M.D.,
Chung S.-J., Gould A., Hwang K.-H., Kim H.-W., Ryu Y.-H., Shin I.-G.,
Shvartzvald Y., Zang W., Yee J.C., Cha S.-M., Kim D.-J., Kim S.-L.,
Lee D.-J., Lee Y., Park B.-G., Pogge R.W., Kim C.-H., Kim W.-T., Mroz P.,
Szymanski M.K., Skowron J., Poleski R., Soszynski I., Pietrukowicz P.,
Kozlowski S., Ulaczyk K., Rybicki K.A., Iwanek P., Wrona M., Gromadzki M.,
Abe F., Barry R., Bennett D.P., Bhattacharya A., Donachie M., Fujii H.,
Fukui A., Itow Y., Hirao Y., Kirikawa R., Kondo I., Cheung Alex Li M.,
Matsubara Y., Muraki Y., Miyazaki S., Ranc C., Rattenbury N.J., Satoh Y.,
Shoji H., Suematsu H., Sumi T., Suzuki D., Tanaka Y., Tristram P.J.,
Yamakawa T., Yamawaki T., Yonehara A.
<Astron. J., 161, 270 (2021)>
=2021AJ....161..270H 2021AJ....161..270H
ADC_Keywords: Exoplanets; Gravitational lensing; Photometry, RI
Keywords: Gravitational microlensing exoplanet detection
Abstract:
We investigate the gravitational microlensing event KMT-2019-BLG-1715,
the light curve of which shows two short-term anomalies from a
caustic-crossing binary-lensing light curve: one with a large
deviation and the other with a small deviation. We identify five pairs
of solutions, in which the anomalies are explained by adding an extra
lens or source component in addition to the base binary-lens model. We
resolve the degeneracies by applying a method in which the measured
flux ratio between the first and second source stars is compared with
the flux ratio deduced from the ratio of the source radii. Applying
this method leaves a single pair of viable solutions, in both of which
the major anomaly is generated by a planetary-mass third body of the
lens, and the minor anomaly is generated by a faint second source. A
Bayesian analysis indicates that the lens comprises three masses: a
planet-mass object with ∼2.6MJ and binary stars of K and M dwarfs
lying in the galactic disk. We point out the possibility that the lens
is the blend, and this can be verified by conducting high-resolution
follow-up imaging for the resolution of the lens from the source.
Description:
The Korea Microlensing Telescope Network (KMTNet) survey utilizes
three telescopes that lie around the world in Australia (KMTA), Chile
(KMTC), and South Africa (KMTS). The aperture of each telescope is
1.6m, and the field of view of the camera mounted on the telescope is
4°2. The source lies in the BLG03 and BLG43 fields, which
overlap with a small offset, and thus the data are composed of six
sets, with two sets from each telescope.
The Optical Gravitational Lensing Experiment (OGLE) survey uses the
1.3m Warsaw Telescope located at the Las Campanas Observatory in
Chile, and the Microlensing Observations in Astrophysics (MOA) survey
utilizes the 1.8m MOA-II Telescope located at Mt.John Observatory in
New Zealand.
Objects:
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RA (2000) DE Designation(s)
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18 01 29.21 -28 46 37.7 KMT-2019-BLG-1715 = KMT-2019-BLG-1715
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ogle.dat 30 450 I band light curve from OGLE
moa.dat 30 798 R band light curve from MOA
kmta1.dat 30 1307 I band light curve from KMTA1
kmta2.dat 30 1195 I band light curve from KMTA2
kmtc1.dat 30 1109 I band light curve from KMTC1
kmtc2.dat 30 1424 I band light curve from KMTC2
kmts1.dat 30 981 I band light curve from KMTS1
kmts2.dat 30 1314 I band light curve from KMTS2
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See also:
J/A+A/528/A42 : VRi light curves of the lensed QSO HE 0435-1223 (Ricci+, 2011)
J/A+A/551/A104 : Lensed QSO UM673/Q0142-100 VRi light curves (Ricci+, 2013)
J/AJ/154/210 : 2015 high-cadence Spitzer microlensing events (Zhu+, 2017)
J/AJ/159/98 : I-band LC of microlensing event KMT-2016-BLG-1836 (Yang+, 2020)
J/AJ/159/116 : I-band light curves of OGLE-2015-BLG-1771Lb (Zhang+, 2020)
J/AJ/159/256 : Light curve of OGLE-2018-BLG-0677 (Herrera-Martin+, 2020)
J/AJ/159/261 : LC of microlensing event OGLE-2012-BLG-0838 (Poleski+, 2020)
J/AJ/159/262 : OGLE/KMTnet VI bands photo. of OGLE-2019-BLG-0551 (Mroz+, 2020)
J/AJ/160/74 : Optical and IR photometry of OGLE-2017-BLG-0406 (Hirao+, 2020)
J/AJ/160/148 : RI-band LC microlensing event OGLE-2018-BLG-1269Lb (Jung+,2020)
J/AJ/160/255 : KMTNet & OGLE I-band photo. of KMT-2019-BLG-0842 (Jung+, 2020)
J/A+A/649/A90 : KMT-2018-BLG-1025Lb I light curve (Han+, 2021)
J/AJ/161/54 : VRI photometry of MOA 2009-BLG-319 (Terry+, 2021)
J/AJ/161/293 : LCs of OGLE-2018-BLG-0567 and OGLE-2018-BLG-0962 (Jung+, 2021)
Byte-by-byte Description of file: ogle.dat moa.dat kmt[acs][12].dat
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Bytes Format Units Label Explanations
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1- 11 F11.6 d HJD Time of observation; HJD-2450000
13- 21 F9.6 mag omag Magnitude
23- 30 F8.6 mag e_omag Magnitude error
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 10-Aug-2021