SIMBAD references

2008MNRAS.385.1431H - Mon. Not. R. Astron. Soc., 385, 1431-1442 (2008/April-2)

The dark matter environment of the Abell 901/902 supercluster: a weak lensing analysis of the HST STAGES survey.

HEYMANS C., GRAY M.E., PENG C.Y., VAN WAERBEKE L., BELL E.F., WOLF C., BACON D., BALOGH M., BARAZZA F.D., BARDEN M., BOHM A., CALDWELL J.A.R., HAUSSLER B., JAHNKE K., JOGEE S., VAN KAMPEN E., LANE K., McINTOSH D.H., MEISENHEIMER K., MELLIER Y., SANCHEZ S.F., TAYLOR A.N., WISOTZKI L. and ZHENG X.

Abstract (from CDS):

We present a high-resolution dark matter reconstruction of the z = 0.165 Abell 901/902 supercluster from a weak lensing analysis of the Hubble Space Telescope STAGES survey. We detect the four main structures of the supercluster at high significance, resolving substructure within and between the clusters. We find that the distribution of dark matter is well traced by the cluster galaxies, with the brightest cluster galaxies marking out the strongest peaks in the dark matter distribution. We also find a significant extension of the dark matter distribution of Abell 901a in the direction of an infalling X-ray group Abell 901α. We present mass, mass-to-light and mass-to-stellar mass ratio measurements of the structures and substructures that we detect. We find no evidence for variation of the mass-to-light and mass-to-stellar mass ratio between the different clusters. We compare our space-based lensing analysis with an earlier ground-based lensing analysis of the supercluster to demonstrate the importance of space-based imaging for future weak lensing dark matter `observations'.

Abstract Copyright: ©2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: cluster - cosmology: observations - dark matter - large-scale structure of Universe

Status at CDS:  

Simbad objects: 8

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2020.04.08-22:05:03

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