ar X iv : a st ro - p h / 04 01 03 7 v 3 1 3 Ju l 2 00 4 The abundance of massive galaxies 3 – 6 billion years after the Big Bang

ar X iv : a st ro - p h / 04 01 03 7 v 2 2 1 M ay 2 00 4 The abundance of massive galaxies 3 – 6 billion years after the Big Bang

Department of Physics & Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218-2686. Department of Astronomy & Astrophysics, University of Toronto, 60 St. George Street,Toronto, ON, M5S 3H8, Canada Observatories of the Carnegie Institute of Washington, Santa Barbara Street, Pasadena, CA 9110 On leave of absence from Osservatorio Astronomico di Roma, Italy Center for...

ar X iv : a st ro - p h / 02 03 11 6 v 2 1 M ay 2 00 2 – 1 – Gravitational lenses magnify up to one third of the most distant quasars

Exceptionally bright quasars with redshifts up to z=6.28 have recently been discovered 1. Quasars are thought to be powered by the accretion of gas onto supermassive black holes at the centres of galaxies. Their maximum (Eddington) luminosity is proportional to the mass of the black hole, and so these bright quasars are inferred to have black holes with masses of more than a few billion solar m...

ar X iv : a st ro - p h / 06 04 56 1 v 1 2 7 A pr 2 00 6 The large - scale structure of the Universe

Research over the past 25 years has led to the view that the rich tapestry of present-day cosmic structure arose during the first instants of creation, where weak ripples were imposed on the otherwise uniform and rapidly expanding primordial soup. Over 14 billion years of evolution, these ripples have been amplified to enormous proportions by gravitational forces, producing ever-growing concent...

ar X iv : a st ro - p h / 04 03 18 3 v 1 8 M ar 2 00 4 Submillimeter Galaxies as Tracers of Mass Assembly at Large

ar X iv : a st ro - p h / 01 07 22 2 v 1 1 2 Ju l 2 00 1 Tracking The Baryon Density From The Big Bang To The Present

The primordial abundances of deuterium, helium, and lithium probe the baryon density of the universe only a few minutes after the Big Bang. Of these relics from the early universe, deuterium is the baryometer of choice. After reviewing the current observational status (a moving target!), the BBN baryon density is derived and compared to independent estimates of the baryon density several hundre...