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Article Contents

ABSTRACT

1.INTRODUCTION

2.THE SURVEYS

2.1.COMBO-17: Galaxy-Galaxy Lensing

2.2.RCS: Galaxy-Galaxy Lensing

2.3.SDSS: Galaxy-Galaxy Lensing & Satellite Dynamics

2.4.2dFGRS: Satellite Dynamics

3.PROBING HALO POTENTIALS WITH WEAK LENSING

4.PROBING HALO POTENTIALS WITH SATELLITE GALAXIES

5.THEORY: "UNIVERSAL" (NFW) HALOS VS. ISOTHERMAL HALOS

6.OBSERVED VELOCITY DISPERSION PROFILES

7.HALO MASSES AND GALAXY MASS-TO-LIGHT RATIOS

7.1.M and M/L from Galaxy-Galaxy Lensing

7.2.M and M/L from Satellite Dynamics

8.NON-SPHERICAL HALOS

8.1.Evidence for Flattened Halos from Galaxy-Galaxy Lensing

8.2.Evidence for Flattened Halos from Satellite Galaxies

9.SUMMARY

REFERENCES