iv : a st ro - p h / 02 01 39 4 v 2 1 O ct 2 00 2 The Princeton Variability Survey

ar X iv : a st ro - p h / 02 01 05 0 v 1 4 J an 2 00 2 Probing the evolution of massive galaxies with the K 20 survey ⋆

The motivations and the status of the K20 survey are presented. The first results on the evolution of massive galaxies and the comparison with the predictions of the currently competing scenarios of galaxy formation are also discussed.

ar X iv : a st ro - p h / 02 10 42 8 v 1 1 8 O ct 2 00 2 Star Clusters in Interacting Galaxies : The Case of M 51 Nate

ar X iv : a st ro - p h / 02 10 04 2 v 1 1 O ct 2 00 2 Variable Speed of Light Theories

Two variable speed of light models and their physical consequences are investigated. Talk given at the workshop on varying fundamental constants, JENAM 2002, Porto, Portugal, September 2-7, 2002. To be published in the proceedings by Kluwer publications. 1. Varying Speed of Light Cosmology: An Alternative to In-

ar X iv : a st ro - p h / 01 03 25 4 v 1 1 6 M ar 2 00 1 Construction of the Variability → Luminosity Estimator

ar X iv : a st ro - p h / 02 10 60 4 v 1 2 8 O ct 2 00 2 Weak Lensing Results from the 75 Square Degree CTIO Survey

We measure seeing-corrected ellipticities for 2 × 10 6 galaxies with magnitude R ≤ 23 in 12 widely separated fields totalling 75 deg 2 of sky. At angular scales 30 ′ , ellipticity correlations are detected at high significance and exhibit nearly the pure " E-mode " behavior expected of weak gravitational lensing. Even when smoothed to the full field size of 2.