2021AJ....161..293J


Query : 2021AJ....161..293J

2021AJ....161..293J - Astron. J., 161, 293-293 (2021/June-0)

OGLE-2018-BLG-0567Lb and OGLE-2018-BLG-0962Lb: two microlensing planets through the planetary-caustic channel.

JUNG Y.K., HAN C., UDALSKI A., GOULD A., YEE J.C., ALBROW M.D., CHUNG S.-J., HWANG K.-H., RYU Y.-H., SHIN I.-G., SHVARTZVALD Y., ZHU W., ZANG W., CHA S.-M., KIM D.-J., KIM H.-W., KIM S.-L., LEE C.-U., LEE D.-J., LEE Y., PARK B.-G., POGGE R.W. (The KMTNet Collaboration), MROZ P., SZYMANSKI M.K., SKOWRON J., POLESKI R., SOSZYNSKI I., PIETRUKOWICZ P., KOZLOWSKI S., ULACZYK K., RYBICKI K.A., IWANEK P., WRONA M. (The OGLE Collaboration)

Abstract (from CDS):

We present the analyses of two microlensing events, OGLE-2018-BLG-0567 and OGLE-2018-BLG-0962. In both events, the short-lasting anomalies were densely and continuously covered by two high-cadence surveys. The light-curve modeling indicates that the anomalies are generated by source crossings over the planetary caustics induced by planetary companions to the hosts. The estimated planet/host separation (scaled to the angular Einstein radius θE) and mass ratio are (s, q x 103) = (1.81 ± 0.02, 1.24 ± 0.07) and (s, q x 103) = (1.25 ± 0.03, 2.38 ± 0.08), respectively. From Bayesian analyses, we estimate the host and planet masses as (Mh,Mp)=(0.25–0.13+0.27M☉,0.32–0.17+0.34MJ) and (Mh,Mp)=(0.54–0.28+0.33M☉,1.34–0.70+0.82MJ), respectively. These planetary systems are located at a distance of 7.06–1.15+0.93kpc for OGLE-2018-BLG-0567 and 6.50–1.75+1.06kpc for OGLE-2018-BLG-0962, suggesting that they are likely to be near the Galactic bulge. The two events prove the capability of current high-cadence surveys for finding planets through the planetary-caustic channel. We find that most published planetary-caustic planets are found in Hollywood events in which the source size strongly contributes to the anomaly cross-section relative to the size of the caustic.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Gravitational microlensing - Gravitational microlensing exoplanet detection

VizieR on-line data: <Available at CDS (J/AJ/161/293): fig1.dat fig2.dat>

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 KMT-2016-BLG-1089 * 17 42 23.31 -33 45 35.2           ~ 11 0
2 KMT-2016-BLG-1107 * 17 45 40.260 -26 01 54.48           ~ 13 0
3 OGLE-2008-BLG-092 ** 17 47 29.4593818584 -34 43 35.461182180       15.48   ~ 43 0
4 NAME EWS 2005-BLG-071b Pl 17 50 09.77 -34 40 23.5           ~ 52 1
5 OGLE-2005-BLG-071 * 17 50 09.77 -34 40 23.5           ~ 62 1
6 MOA-bin-1 * 17 51 10.20 -29 47 38.3         23 ~ 26 1
7 OGLE-2017-BLG-0173 * 17 51 52.95 -29 16 16.9           ~ 21 0
8 MOA 2013-BLG-260 ** 17 52 07.49 -29 50 46.0           ~ 45 0
9 OGLE-2006-BLG-109 * 17 52 34.55 -30 05 15.7     19.035   16.643 ~ 94 2
10 OGLE-2018-BLG-0962 * 17 52 41.95 -32 18 33.3           ~ 9 0
11 NAME EWS 2018-BLG-0962b Pl? 17 52 41.95 -32 18 33.3           ~ 2 0
12 NAME EWS 2005-BLG-390b Pl 17 54 19.2 -30 22 38           ~ 80 1
13 OGLE-2005-BLG-390 * 17 54 19.2 -30 22 38           KIII 54 1
14 OGLE-2014-BLG-1722 * 17 55 00.570 -31 28 08.62           ~ 17 0
15 OGLE-2018-BLG-0567 * 17 56 04.42 -27 59 13.6           ~ 8 0
16 NAME EWS 2018-BLG-0567b Pl? 17 56 04.42 -27 59 13.6           ~ 3 0
17 MOA 2018-BLG-145 * 17 56 13.3348253400 -29 11 56.615704692           ~ 8 0
18 OGLE-2017-BLG-0373 * 17 57 19.06 -31 57 06.2           ~ 12 0
19 MOA 2013-BLG-605 * 17 58 42.880 -29 23 53.60           ~ 21 0
20 MOA 2016-BLG-75 * 17 59 34.9386937392 -31 49 06.963389148           ~ 14 0
21 OGLE-2012-BLG-0022 * 18 01 46.31 -29 06 31.6           ~ 13 0
22 OGLE-2011-BLG-0203 BD? 18 03 24.96 -29 12 48.3           ~ 8 0
23 MOA 2010-BLG-353 * 18 05 12.940 -27 17 35.64           ~ 12 0
24 MOA 2003-BLG-53 * 18 05 16.35 -28 53 42.0           GIV 59 1
25 OGLE-2012-BLG-0838 * 18 12 00.7378 -25 42 41.790           ~ 7 0
26 MACHO 98-BLG-35 * 18 17 16.3 -22 01 18     20.7     ~ 24 0
27 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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