2018AJ....155...40R

Query : 2018AJ....155...40R

2018AJ....155...40R - Astron. J., 155, 40-40 (2018/January-0)

OGLE-2016-BLG-1190Lb: the first Spitzer bulge planet lies near the planet/brown-dwarf boundary.

RYU Y.-H., YEE J.C., UDALSKI A., BOND I.A., SHVARTZVALD Y., ZANG W., FIGUERA JAIMES R., JORGENSEN U.G., ZHU W., HUANG C.X., JUNG Y.K., ALBROW M.D., CHUNG S.-J., GOULD A., HAN C., HWANG K.-H., SHIN I.-G., 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), CALCHI NOVATI S., CAREY S., HENDERSON C.B., BEICHMAN C., GAUDI B.S. (The Spitzer Team), MROZ P., POLESKI R., SKOWRON J., SZYMANSKI M.K., SOSZYNSKI I., KOZLOWSKI S., PIETRUKOWICZ P., ULACZYK K., PAWLAK M. (The OGLE Collaboration), ABE F., ASAKURA Y., 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., MASUDA K., MATSUBARA Y., MIYAZAKI S., MURAKI Y., NAGAKANE M., OHNISHI K., RANC C., RATTENBURY N.J., SAITO T., SHARAN A., SULLIVAN D.J., SUMI T., SUZUKI D., TRISTRAM P.J., YAMADA T., YAMADA T., YONEHARA A. (The MOA Collaboration), BRYDEN G., HOWELL S.B., JACKLIN S. (The UKIRT Microlensing Team), PENNY M.T., MAO S., FOUQUE P., WANG T. (The CFHT-K2C9 Microlensing Survey group), STREET R.A., TSAPRAS Y., HUNDERTMARK M., BACHELET E., DOMINIK M., LI Z., CROSS S., CASSAN A., HORNE K., SCHMIDT R., WAMBSGANSS J., MENT S.K., MAOZ D., SNODGRASS C., STEELE I.A. (The RoboNet Team), BOZZA V., BURGDORF M.J., CICERI S., D'AGO G., EVANS D.F., HINSE T.C., KERINS E., KOKOTANEKOVA R., LONGA P., MacKENZIE J., POPOVAS A., RABUS M., RAHVAR S., SAJADIAN S., SKOTTFELT J., SOUTHWORTH J., VON ESSEN C. (The MiNDSTEp Team)

Abstract (from CDS):

We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source-lens baseline object. The planet's mass, Mp = 13.4 ± 0.9 MJ, places it right at the deuterium-burning limit, i.e., the conventional boundary between "planets" and "brown dwarfs." Its existence raises the question of whether such objects are really "planets" (formed within the disks of their hosts) or "failed stars" (low-mass objects formed by gas fragmentation). This question may ultimately be addressed by comparing disk and bulge/bar planets, which is a goal of the Spitzer microlens program. The host is a G dwarf, Mhost = 0.89 ± 0.07 M☉, and the planet has a semimajor axis a ∼ 2.0 au. We use Kepler K2 Campaign 9 microlensing data to break the lens-mass degeneracy that generically impacts parallax solutions from Earth-Spitzer observations alone, which is the first successful application of this approach. The microlensing data, derived primarily from near-continuous, ultradense survey observations from OGLE, MOA, and three KMTNet telescopes, contain more orbital information than for any previous microlensing planet, but not quite enough to accurately specify the full orbit. However, these data do permit the first rigorous test of microlensing orbital-motion measurements, which are typically derived from data taken over <1% of an orbital period.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

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

CDS comments: OGLE-2006-BLG-109La,b is a probable misprint for OGLE-2006-BLG-109Lb,c.

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 OGLE-2005-SMC-001 BD? 00 40 28.50 -73 44 46.1           ~ 19 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11311 1
3 MOA 2009-BLG-266 * 17 48 05.950 -35 00 19.48           ~ 24 1
4 NAME EWS 2005-BLG-071b Pl 17 50 09.77 -34 40 23.5           ~ 50 1
5 OGLE-2005-BLG-071 * 17 50 09.77 -34 40 23.5           ~ 59 1
6 NAME EWS 2006-BLG-109c Pl 17 52 34.55 -30 05 15.7           ~ 35 1
7 NAME EWS 2006-BLG-109b Pl 17 52 34.55 -30 05 15.7           ~ 46 1
8 MOA 2015-BLG-281 BD? 17 55 01.020 -29 02 49.60           ~ 20 0
9 MOA 2016-BLG-350 BD? 17 55 23.50 -30 12 26.1           ~ 34 0
10 MOA 2011-BLG-293b Pl 17 55 39.350 -28 28 36.65           ~ 21 1
11 MACHO 97-BLG-41 ** 17 56 20.7 -28 47 42           ~ 56 1
12 MOA 2016-BLG-383b Pl 17 58 52.30 -27 36 48.8           ~ 4 0
13 MOA 2016-BLG-383 * 17 58 52.30 -27 36 48.8           ~ 13 0
14 MOA 2014-BLG-307 BD? 18 02 29.21 -28 23 46.5           ~ 26 0
15 OGLE-2009-BLG-020 * 18 04 20.960 -29 31 08.96           ~ 11 0
16 NAME Galactic Bar reg ~ ~           ~ 1256 0
17 NAME Galactic Bulge reg ~ ~           ~ 4377 0

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