1998A&A...339..658M

Query : 1998A&A...339..658M

1998A&A...339..658M - Astronomy and Astrophysics, volume 339, 658-670 (1998/11-3)

AGAPEROS: searches for microlensing in the LMC with the pixel method II. Selection of possible microlensing events.

MELCHIOR A.-L., AFONSO C., ANSARI R., AUBOURG E., BAILLON P., BAREYRE P., BAUER F., BEAULIEU J.-P., BOUQUET A., BREHIN S., CAVALIER F., CHAR S., COUCHOT F., COUTURES C., FERLET R., FERNANDEZ J., GAUCHEREL C., GIRAUD-HERAUD Y., GLICENSTEIN J.-F., GOLDMAN B., GONDOLO P., GROS M., GUIBERT J., HARDIN D., KAPLAN J., DE KAT J., LACHIEZE-REY M., LAURENT B., LESQUOY E., MAGNEVILLE C., MANSOUX B., MARQUETTE J.-B., MAURICE E., MILSZTAJN A., MONIEZ M., MOREAU O., MOSCOSO L., PALANQUE-DELABROUILLE N., PERDEREAU O., PREVOT L., RENAULT C., QUEINNEC F., RICH J., SPIRO M., VIDAL-MADJAR A., VIGROUX L. and ZYLBERAJCH S.

Abstract (from CDS):

We apply the pixel method of analysis (sometimes called ``pixel lensing'') to a small subset of the EROS-1 microlensing observations of the bar of the Large Magellanic Cloud (LMC). The pixel method is designed to find microlensing events of unresolved source stars and had heretofore been applied only to M31 where essentially all sources are unresolved. With our analysis optimised for the detection of long-duration microlensing events due to 0.01-1M☉ Machos, we detect no microlensing events and compute the corresponding detection efficiencies. We show that the pixel method, applied to crowded fields, should detect 10 to 20 times more microlensing events for M>0.05M☉ Machos compared to a classical analysis of the same data which latter monitors only resolved stars. In particular, we show that for a full halo of Machos in the mass range 0.1-0.5M☉, a pixel analysis of the three-year EROS-1 data set covering 0.39°2 would yield ≃4 events.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - techniques: photometric - galaxies: Magellanic Clouds - dark matter - gravitational lensing

Simbad objects: 13

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Number of rows : 13
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11142 1
2 SHV 0516509-693752 Mi* 05 16 28.9822115526 -69 34 43.623848116     15.93 14.071 14.067 ~ 14 0
3 SHV 0516570-691909 Mi* 05 16 37.4757220992 -69 15 59.244257160     18.27 14.289 13.977 M: 18 0
4 SHV 0518197-694139 Mi* 05 17 56.8544232625 -69 38 37.913867757     16.84 14.394 14.590 C 17 0
5 SHV 0520158-693059 C* 05 19 53.9248973813 -69 28 02.806119781     18.66 16.97 15.651 C(e) 14 0
6 SHV 0520355-694322 Mi* 05 20 12.0605901430 -69 40 29.765390485     17.107 13.217 13.134 M6 19 0
7 SHV 0521087-693737 LP* 05 20 46.1746257024 -69 34 46.909745472       13.321   M3 7 0
8 SHV 0521431-694328 Mi* 05 21 19.5126184944 -69 40 41.612575512     16.75 14.718 14.513 ~ 13 1
9 SHV 0521476-694312 Mi* 05 21 24.0040980840 -69 40 24.842039484     17.13 15.104 14.787 C 16 0
10 SHV 0523136-693845 Mi* 05 22 50.2803007968 -69 36 04.122532980     16.11 14.99 14.252 ~ 15 0
11 SHV 0523529-693412 Mi* 05 23 29.7876438765 -69 31 33.316187726     17.53 14.885 14.678 M6 16 0
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17424 0
13 EROS LMC 1 * 05 26 34 -70 57.8   19.46 19.11     B 16 0

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