Document Mass Profiles and Shapes of Cosmological Structures
G.A. Mamon, F. Combes, C. Deffayet and B. Fort (eds)
EAS Publications Series, 20 (2006) 153-160
DOI: 10.1051/eas:2006063
Weak lensing constraints on galaxy halos
H. HoekstraDepartment of Physics & Astronomy, University of Victoria
Abstract
Weak gravitational lensing has become an important tool
to study the properties of dark matter halos around galaxies, thanks
to the advent of large panoramic cameras on 4 m class telescopes. This
area of research has been developing rapidly in the past few years,
and in these proceedings we present some results based on the
Red-Sequence Cluster Survey, thus highlighting what can be achieved with
current data sets. We present results on the measurement of virial masses as a
function of luminosity and the extent of dark matter halos. Much
larger surveys are underway or planned, which will result in an
impressive improvement in the accuracy of the measurements. However,
the interpretation of future results will rely more and more on
comparison with numerical simulations, thus providing direct tests of
galaxy formation models.
© EAS, EDP Sciences 2006