ar X iv : a st ro - p h / 00 01 23 6 1 3 Ja n 20 00 1 The Galaxy Distribution homogeneous , fractal , or neither ?

ar X iv : a st ro - p h / 00 01 29 6 v 1 1 7 Ja n 20 00 H 2 emission as a diagnostic of physical processes in starforming galaxies By Paul

Observations and interpretation of extragalactic rotational and rovibrational H2 emission are reviewed. Direct observations of H2 lines do not trace bulk H2 mass, but excitation rate. As such, the H2 lines are unique diagnostics, if the excitation mechanism can be determined, which generally requires high-quality spectroscopy and suitable additional data. The diagnostic power of the H2 lines is...

ar X iv : a st ro - p h / 00 01 17 8 v 1 1 1 Ja n 20 00 THE ENERGY OUTPUT OF THE UNIVERSE

The total energy emitted by the growth of massive black holes is large and can be 10-50 per cent of that emitted by stars in the universe. I show how the X-ray Background provides a good measure of this energy and also why most accretion power is absorbed and re-emitted in the far infrared band. A model for the obscured growth of massive black holes is presented which accounts for both the high...

ar X iv : a st ro - p h / 01 11 13 6 v 1 7 N ov 2 00 1 1 Active Optics in Modern , Large Optical Telescopes

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 / 01 12 42 3 v 1 1 8 D ec 2 00 1 The black hole mass of BL Lacs from stellar velocity dispersion of the host galaxy

The black hole mass of BL Lacs from stellar velocity dispersion of the host galaxy.