2019AJ....158..114H

Query : 2019AJ....158..114H

2019AJ....158..114H - Astron. J., 158, 114-114 (2019/September-0)

OGLE-2018-BLG-1011Lb,c: microlensing planetary system with two giant planets orbiting a low-mass star.

HAN C., BENNETT D.P., UDALSKI A., GOULD A., BOND I.A., SHVARTZVALD Y., NIKOLAUS K.-S., HUNDERTMARK M., BOZZA V., CASSAN A., HIRAO Y., BACHELET E., FOUQUE P. (The Leading Authors), ALBROW M.D., CHUNG S.-J., HONG K., HWANG K.-H., LEE C.-U., RYU Y.-H., SHIN I.-G., YEE J.C., JUNG Y.K., CHA S.-M., KIM D., KIM D.-J., KIM H.-W., KIM S.-L., 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), ABE F., BARRY R., BHATTACHARYA A., DONACHIE M., FUKUI A., ITOW Y., KAWASAKI K., KONDO I., KOSHIMOTO N., LI M.C.A., MATSUBARA Y., MURAKI Y., MIYAZAKI S., NAGAKANE M., RANC C., RATTENBURY N.J., SUEMATSU H., SULLIVAN D.J., SUMI T., SUZUKI D., TRISTRAM P.J., YONEHARA A. (The MOA Collaboration), MAO S., WANG T., ZANG W., ZHU W., PENNY M.T. (The CFHT Collaboration), BEICHMAN C.A., BRYDEN G., CALCHI NOVATI S., GAUDI B.S., HENDERSON C.B., JACKLIN S., STASSUN K.G. (The UKIRT Microlensing Team)

Abstract (from CDS):

We report a multiplanetary system found from the analysis of microlensing event OGLE-2018-BLG-1011, for which the light curve exhibits a double-bump anomaly around the peak. We find that the anomaly cannot be fully explained by the binary-lens or binary-source interpretations and its description requires the introduction of an additional lens component. The 3L1S (three lens components and a single source) modeling yields three sets of solutions, in which one set of solutions indicates that the lens is a planetary system in a binary, while the other two sets imply that the lens is a multiplanetary system. By investigating the fits of the individual models to the detailed light curve structure, we find that the multiple-planet solution with planet-to-host mass ratios ∼9.5 x 10–3 and ∼15 x 10–3 are favored over the other solutions. From the Bayesian analysis, we find that the lens is composed of two planets with masses 1.8–1.1+3..4MJ and 2.8–1.7+5.1MJ around a host with a mass 0.18–0.10+0.33M☉ and located at a distance 7.1–1.5+1.1kpc. The estimated distance indicates that the lens is the farthest system among the known multiplanetary systems. The projected planet-host separations are a_⊥,2=1.8-1.5_+2.1au (0.8–0.6+0.9au) and a_⊥,3=0.8-0.6_+0.9au, where the values of a⊥,2 inside and outside the parenthesis are the separations corresponding to the two degenerate solutions, indicating that both planets are located beyond the snow line of the host, as with the other four multiplanetary systems previously found by microlensing.

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

Journal keyword(s): gravitational lensing: micro - planetary systems

Simbad objects: 29

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Number of rows : 29
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 OGLE-2012-BLG-0026 * 17 34 18.7004610096 -27 08 33.867112596           ~ 55 1
2 NAME EWS 2012-BLG-0026c Pl 17 34 18.7004610096 -27 08 33.867112596           ~ 10 1
3 NAME EWS 2012-BLG-0026b Pl 17 34 18.7004610096 -27 08 33.867112596           ~ 12 1
4 OGLE-2013-BLG-0723 BD? 17 34 40.51 -27 26 53.2           ~ 23 0
5 OGLE-2014-BLG-1186 * 17 41 59.63 -34 17 18.1           ~ 3 0
6 KMT-2017-BLG-0962 * 17 46 48.540 -26 10 48.07           ~ 2 0
7 NAME EWS 2008-BLG-92Ab Pl 17 47 29.4593818584 -34 43 35.461182180           ~ 13 0
8 NAME MOA 2013-BLG-260Bb Pl 17 52 07.49 -29 50 46.0           ~ 19 0
9 KMT-2017-BLG-1119 * 17 52 10.630 -33 01 05.30           ~ 2 0
10 NAME EWS 2006-BLG-109b Pl 17 52 34.55 -30 05 15.7           ~ 46 1
11 NAME EWS 2006-BLG-109c Pl 17 52 34.55 -30 05 15.7           ~ 35 1
12 OGLE-2006-BLG-109 * 17 52 34.55 -30 05 15.7     19.035   16.643 ~ 94 2
13 OGLE-2018-BLG-0043 * 17 53 29.78 -33 52 08.1           ~ 1 0
14 OGLE-2012-BLG-0207 * 17 54 30.62 -32 05 35.3           ~ 1 0
15 OGLE-2014-BLG-1722 * 17 55 00.570 -31 28 08.62           ~ 17 0
16 OGLE-2012-BLG-0442 * 17 55 41.00 -29 08 59.6           ~ 3 0
17 OGLE-2016-BLG-0733 * 17 55 54.29 -29 50 28.2           ~ 2 0
18 MOA 2018-BLG-182c Pl 17 56 03.36 -29 04 58.4           ~ 3 0
19 MOA 2018-BLG-182b Pl 17 56 03.36 -29 04 58.4           ~ 3 0
20 MOA 2018-BLG-182 * 17 56 03.36 -29 04 58.4           ~ 26 0
21 MACHO 97-BLG-41 ** 17 56 20.7 -28 47 42           ~ 58 1
22 NAME EWS 2016-BLG-0613b Pl 17 57 02.50 -28 06 58.2           ~ 5 0
23 OGLE-2016-BLG-0613 ** 17 57 02.50 -28 06 58.2           ~ 29 0
24 OGLE-2002-BUL-055 PN 17 59 40.93 -27 07 18.2           ~ 13 0
25 NAME EWS 2018-BLG-0532b Pl? 17 59 56.02 -28 59 51.9           ~ 8 0
26 OGLE-2018-BLG-0532 * 17 59 56.02 -28 59 51.9           ~ 15 0
27 MOA 2012-BLG-486 * 18 01 08.82 -33 13 06.1           ~ 6 0
28 OGLE-2008-BLG-270 * 18 05 20.03 -30 33 46.1           ~ 1 0
29 NAME MOA 2007-BLG-379Ac Pl 18 05 24.43 -26 25 18.8           ~ 12 0

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