2009MNRAS.397.2099A

Query : 2009MNRAS.397.2099A

2009MNRAS.397.2099A - Mon. Not. R. Astron. Soc., 397, 2099-2105 (2009/August-3)

Difference imaging photometry of blended gravitational microlensing events with a numerical kernel.

ALBROW M.D., HORNE K., BRAMICH D.M., FOUQUE P., MILLER V.R., BEAULIEU J.-P., COUTURES C., MENZIES J., WILLIAMS A., BATISTA V., BENNETT D.P., BRILLANT S., CASSAN A., DIETERS S., DOMINIS PRESTER D., DONATOWICZ J., GREENHILL J., KAINS N., KANE S.R., KUBAS D., MARQUETTE J.B., POLLARD K.R., SAHU K.C., TSAPRAS Y., WAMBSGANSS J. and ZUB M.

Abstract (from CDS):

The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration. The effect of an error in the source-star coordinates is explored and a new algorithm is presented for determining the precise coordinates of the microlens in blended events, essential for accurate photometry of difference images. It is shown how the photometric reference flux need not be measured directly from the reference image but can be obtained from measurements of the difference images combined with the knowledge of the statistical flux uncertainties. The improved performance of the new algorithm, relative to isis2, is demonstrated.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): methods: statistical - techniques: image processing - techniques: photometric

Simbad objects: 6

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Number of rows : 6
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 NGC 6366 GlC 17 27 44.24 -05 04 47.5           ~ 310 0
2 OGLE-2007-BUL-472 * 17 57 04.34 -28 22 02.1           ~ 5 0
3 OGLE 2004-BUL-482 * 17 57 30.6268943160 -30 51 30.607919388         14.57 MIII 6 0
4 OGLE-2008-BUL-229 * 17 59 26.24 -30 14 01.2           ~ 1 0
5 MOA 2007-BLG-197 * 18 07 04.729 -31 56 46.77           ~ 9 0
6 NAME Galactic Bulge reg ~ ~           ~ 4297 0

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