2003A&A...405..125C


Query : 2003A&A...405..125C

2003A&A...405..125C - Astronomy and Astrophysics, volume 405, 125-133 (2003/7-1)

Pixel lensing observations towards globular clusters.

CARDONE V.F. and CANTIELLO M.

Abstract (from CDS):

It has been suggested that a monitoring program employing the pixel lensing method to search for microlensing events towards galactic globular clusters may increase the statistics and discriminate among different halo models. Stimulated by this proposal, we evaluate an upper limit to the pixel lensing event rate for such a survey. Four different dark halo models have been considered changing both the flattening and the slope of the mass density profile. The lens mass function has been modelled as a homogenous power-law for µ∈(µl, µu) and both the mass limits and the slope of the mass function have been varied to investigate their effect on the rate. The target globular clusters have been selected in order to minimize the disk contribution to the event rate. We find that a pixel lensing survey towards globular clusters is unable to discriminate among different halo models since the number of detectable events is too small to allow any reliable statistical analysis.

Abstract Copyright:

Journal keyword(s): gravitational lensing - Galaxy: kinematics and dynamics - Galaxy: halo - globular clusters: general - dark matter

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 956 0
2 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 742 0
3 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 853 0
4 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 518 0
5 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 750 0
6 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 557 0
7 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2326 0
8 NGC 5466 GlC 14 05 27.29 +28 32 04.0   10.5 9.70     ~ 754 0
9 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1829 0
10 M 107 GlC 16 32 31.86 -13 03 13.6   9.96 8.85     ~ 732 0
11 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2061 0
12 M 12 GlC 16 47 14.18 -01 56 54.7   8.52 6.07     ~ 604 0
13 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 721 0
14 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1955 0
15 NGC 6366 GlC 17 27 44.24 -05 04 47.5           ~ 273 0
16 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 2969 0
17 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 936 1
18 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 241 1

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2021.08.02-13:31:54

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