ar X iv : a st ro - p h / 01 10 12 0 v 1 4 O ct 2 00 1 The z ∼ 1 . 2 Galaxy Luminosity Function from The LCIR Survey

ar X iv : a st ro - p h / 01 10 12 0 v 2 5 N ov 2 00 1 The z ∼ 1 . 2 Galaxy Luminosity Function from The LCIR Survey

We present results from the Las Campanas Infrared Survey, designed to identify a statistically significant sample of z > ∼ 1 galaxies using photometric redshift techniques. Here we summarize the design and strategies of the survey and present the first estimate of the galaxy luminosity function at z > ∼ 1 based on H-band selected galaxies identified in our survey. Results of number count studie...

ar X iv : a st ro - p h / 00 10 56 2 v 1 2 7 O ct 2 00 0 Mining the local Universe : the QSO space density

We present progress results of a new survey for bright QSOs (V < 14.5, R < 15.4, BJ < 15.2) covering the whole sky at high galactic latitudes, |b| > 30. The surface density of QSOs brighter than BJ = 14.8 turns out to be 2.9 ± 0.8 · 10deg. The optical Luminosity Function at 0.04 < z ≤ 0.3 shows significant departures from the standard pure luminosity evolution, providing new insights in the mod...

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 / 99 11 28 5 v 2 1 0 O ct 2 00 0 Weak Gravitational Lensing by the Nearby Cluster Abell 3667

We present two weak lensing reconstructions of the nearby (zcl = 0.055) merging cluster Abell 3667, based on observations taken ∼ 1 year apart under different seeing conditions. This is the lowest redshift cluster with a weak lensing mass reconstruction to date. The reproducibility of features in the two mass maps demonstrate that weak lensing studies of low-redshift clusters are feasible. Thes...

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