SIMBAD references

2003A&A...409..851C - Astronomy and Astrophysics, volume 409, 851-856 (2003/10-3)

Weak lensing by high-redshift clusters of galaxies. II. Mean redshift of the faint background galaxy population.


Abstract (from CDS):

We use weak lensing shear measurements of six z>0.5 clusters of galaxies to derive the mean lensing redshift of the background galaxies used to measure the shear. Five of these clusters are compared to X-ray mass models and verify a mean lensing redshift for a 23<R<26.3, R-I<0.9 background galaxy population in good agreement with photometric redshift surveys of the HDF-S. The lensing strength of the six clusters is also analyzed as a function of the magnitude of the background galaxies, and an increase in shear with increasing magnitude is detected at moderate significance. The change in the strength of the shear is presumed to be caused by an increase in the mean redshift of the background galaxies with increasing magnitude, and the degree of change detected is also in agreement with those in photometric redshift surveys of the HDF-S.

Abstract Copyright:

Journal keyword(s): cosmology: observations - dark matter - gravitational lensing - galaxies: distances and redshifts - galaxies: clusters: general

CDS comments: RX J1716.4+6708 is a misprint for RX J1716.6+6708.

Simbad objects: 7

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