2011A&A...529A.102B

Query : 2011A&A...529A.102B

2011A&A...529A.102B - Astronomy and Astrophysics, volume 529A102-102 (2011/5-1)

MOA-2009-BLG-387Lb: a massive planet orbiting an M dwarf.

BATISTA V., GOULD A., DIETERS S., DONG S., BOND I., BEAULIEU J.P., MAOZ D., MONARD B., CHRISTIE G.W., McCORMICK J., ALBROW M.D., HORNE K., TSAPRAS Y., BURGDORF M.J., CALCHI NOVATI S., SKOTTFELT J., CALDWELL J., KOZLOWSKI S., KUBAS D., GAUDI B.S., HAN C., BENNETT D.P., AN J., ABE F., BOTZLER C.S., DOUCHIN D., FREEMAN M., FUKUI A., FURUSAWA K., HEARNSHAW J.B., HOSAKA S., ITOW Y., KAMIYA K., KILMARTIN P.M., KORPELA A., LIN W., LING C.H., MAKITA S., MASUDA K., MATSUBARA Y., MIYAKE N., MURAKI Y., NAGAYA M., NISHIMOTO K., OHNISHI K., OKUMURA T., PERROTT Y.C., RATTENBURY N., SAITO T., SULLIVAN D.J., SUMI T., SWEATMAN W.L., TRISTRAM P.J., VON SEGGERN E., YOCK P.C.M., BRILLANT S., CALITZ J.J., CASSAN A., COLE A., COOK K., COUTURES C., DOMINIS PRESTER D., DONATOWICZ J., GREENHILL J., HOFFMAN M., JABLONSKI F., KANE S.R., KAINS N., MARQUETTE J.-B., MARTIN R., MARTIOLI E., MEINTJES P., MENZIES J., PEDRETTI E., POLLARD K., SAHU K.C., VINTER C., WAMBSGANSS J., WATSON R., WILLIAMS A., ZUB M., ALLEN W., BOLT G., BOS M., DEPOY D.L., DRUMMOND J., EASTMAN J.D., GAL-YAM A., GORBIKOV E., HIGGINS D., JANCZAK J., KASPI S., LEE C.-U., MALLIA F., MAURY A., MONARD L.A.G., MOORHOUSE D., MORGAN N., NATUSCH T., OFEK E.O., PARK B.-G., POGGE R.W., POLISHOOK D., SANTALLO R., SHPORER A., SPECTOR O., THORNLEY G., YEE J.C., BOZZA V., BROWNE P., DOMINIK M., DREIZLER S., FINET F., GLITRUP M., GRUNDAHL F., HARPSOE K., HESSMAN F.V., HINSE T.C., HUNDERTMARK M., JORGENSEN U.G., LIEBIG C., MAIER G., MANCINI L., MATHIASEN M., RAHVAR S., RICCI D., SCARPETTA G., SOUTHWORTH J., SURDEJ J., ZIMMER F., ALLAN A., BRAMICH D.M., SNODGRASS C., STEELE I.A. and STREET R.A.

Abstract (from CDS):

We report the discovery of a planet with a high planet-to-star mass ratio in the microlensing event MOA-2009-BLG-387, which exhibited pronounced deviations over a 12-day interval, one of the longest for any planetary event. The host is an M dwarf, with a mass in the range 0.07 M_☉<M_host<0.49M_☉ at 90% confidence. The planet-star mass ratio q=0.0132±0.003 has been measured extremely well, so at the best-estimated host mass, the planet mass is m_p=2.6 Jupiter masses for the median host mass, M=0.19M_☉. The host mass is determined from two ``higher order'' microlensing parameters. One of these, the angular Einstein radius θ_E=0.31±0.03 mas has been accurately measured, but the other (the microlens parallax π_E, which is due to the Earth's orbital motion) is highly degenerate with the orbital motion of the planet. We statistically resolve the degeneracy between Earth and planet orbital effects by imposing priors from a Galactic model that specifies the positions and velocities of lenses and sources and a Kepler model of orbits. The 90% confidence intervals for the distance, semi-major axis, and period of the planet are 3.5kpc<D_L<7.9kpc, 1.1AU<a<2.7AU, and 3.8yr<P<7.6yr, respectively.

Abstract Copyright: ∼

Journal keyword(s): gravitational lensing: micro - methods: data analysis - planets and satellites: detection - methods: numerical - instrumentation: adaptive optics - instrumentation: photometers

VizieR on-line data: <Available at CDS (J/A+A/529/A102): phot.dat>

Simbad objects: 7

Full paper

View the references in ADS

Number of rows : 7

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Sp type	#ref 1850 - 2026	#notes
1	NAME NGP	reg	12 51 26.275	+27 07 41.70	~	1274	0
2	NAME Galactic Center	reg	17 45 39.60213	-29 00 22.0000	~	16269	0
3	MOA 2009-BLG-387b	Pl	17 53 50.8	-33 59 25	~	11	1
4	MOA 2009-BLG-387	*	17 53 50.8	-33 59 25	M	24	1
5	MOA 2008-BLG-310	*	17 54 14.53	-34 46 41.0	GV	51	1
6	NAME Baade Window	reg	18 03.5	-30 01	~	643	3
7	NAME Galactic Bulge	reg	~	~	~	4794	0

To bookmark this query, right click on this link: simbad:objects in 2011A&A...529A.102B and select 'bookmark this link' or equivalent in the popup menu