Abell 611: I. weak lensing analysis with LBC

Details Abell 611: I. weak lensing analysis with LBC Abell 611: I. weak lensing analysis with LBC

2010-02-03

arxiv.org/abs/1002.0727v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

13 pages, 15 figures. Accepted for publication in Astronomy and Astrophysics

Scientific paper

Aims. The Large Binocular Cameras (LBC) are two twin wide field cameras (FOV ~ 23'x 25') mounted at the prime foci of the 8.4m Large Binocular Telescope (LBT). We performed a weak lensing analysis of the z=0.288 cluster Abell 611 on g-band data obtained by the blue-optimized Large Binocular Camera in order to estimate the cluster mass. Methods. Due to the complexity of the PSF of LBC, we decided to use two different approaches, KSB and Shapelets, to measure the shape of background galaxies and to derive the shear signal produced by the cluster. Then we estimated the cluster mass with both aperture densitometry and parametric model fits. Results. The combination of the large aperture of the telescope and the wide field of view allowed us to map a region well beyond the expected virial radius of the cluster and to get a high surface density of background galaxies (23 galaxies/arcmin^2). This made possible to estimate an accurate mass for Abell 611. We find that the mass within 1.5 Mpc is: $(8\pm3)\times 10^{14} M_\odot$ from the aperture mass technique and $(5\pm1)\times 10^{14} M_\odot$ using the model fitting by a NFW mass density profile, for both Shapelets and KSB methods. This analysis demonstrates that LBC is a powerful instrument for weak gravitational lensing studies.

Affiliated with

Also associated with

No associations

Rating

Abell 611: I. weak lensing analysis with LBC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Abell 611: I. weak lensing analysis with LBC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abell 611: I. weak lensing analysis with LBC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-602082