2014ApJ...795...42P

Query : 2014ApJ...795...42P

2014ApJ...795...42P - Astrophys. J., 795, 42 (2014/November-1)

Triple microlens OGLE-2008-BLG-092L: binary stellar system with a circumprimary Uranus-type planet.

POLESKI R., SKOWRON J., UDALSKI A., HAN C., KOZLOWSKI S., WYRZYKOWSKI L., DONG S., SZYMANSKI M.K., KUBIAK M., PIETRZYNSKI G., SOSZYNSKI I., ULACZYK K., PIETRUKOWICZ P. and GOULD A.

Abstract (from CDS):

We present the gravitational microlensing discovery of a 4 MUranus planet that orbits a 0.7 M☉star at ~18 AU. This is the first known analog of Uranus. Similar planets, i.e., cold ice giants, are inaccessible to either radial velocity or transit methods because of the long orbital periods, while low reflected light prevents direct imaging. We discuss how similar planets may contaminate the sample of the very short microlensing events that are interpreted as free-floating planets with an estimated rate of 1.8 per main-sequence star. Moreover, the host star has a nearby stellar (or brown dwarf) companion. The projected separation of the planet is only about three times smaller than that of the companion star, suggesting significant dynamical interactions.

Abstract Copyright: ∼

Journal keyword(s): binaries: general - gravitational lensing: micro - planets and satellites: detection - planets and satellites: dynamical evolution and stability

Simbad objects: 12

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Number of rows : 12
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 MOA-ip-1 * 17 46 24.506 -34 30 36.82           ~ 5 0
3 NAME EWS 2008-BLG-92Ab Pl 17 47 29.4593818584 -34 43 35.461182180           ~ 13 0
4 OGLE-2008-BLG-092 ** 17 47 29.4593818584 -34 43 35.461182180       15.48   ~ 43 0
5 MOA-bin-1 * 17 51 10.20 -29 47 38.3         23 ~ 26 1
6 MOA 2013-BLG-260 ** 17 52 07.49 -29 50 46.0           ~ 45 0
7 OGLE-2006-BLG-109 * 17 52 34.55 -30 05 15.7     19.035   16.643 ~ 94 2
8 MOA-ip-7 * 17 57 36.678 -29 59 40.52           ~ 3 0
9 OGLE-2002-BLG-045 * 18 06 51.35 -29 16 43.5           ~ 3 0
10 MOA-ip-10 * 18 09 00.076 -32 16 18.00           ~ 4 0
11 Kepler-421b Pl 18 53 01.6404687912 +45 05 15.976733388           ~ 36 0
12 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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