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Chapter and Conference Paper
Exploring the Use of Virtual Worlds as a Scientific Research Platform: The Meta-Institute for Computational Astrophysics (MICA)
We describe the Meta-Institute for Computational Astrophysics (MICA), the first professional scientific organization based exclusively in virtual worlds (VWs). The goals of MICA are to explore the utility of t...
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Chapter and Conference Paper
Challenges for Cluster Analysis in a Virtual Observatory
There has been an unprecedented and continuing growth in the volume, quality, and complexity of astronomical data sets over the past few years, mainly through large digital sky surveys. Virtual Observatory (VO...
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Chapter and Conference Paper
The GRB Host Galaxies and Redshifts
Based in part on the observations obtained at the W.M. Keck Observatory, operated by the California Association for Research in Astronomy, a scientific partnership among Caltech, the Univ. of California and NASA; and with the NASA/ESA Hubble Space Telescope, operated by the AURA, Inc., under a contract with NASA.
Observations of GRB host galaxies and their environments in general can provide valuable clues about the nature of progenitors. Bursts are associated with faint,
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Chapter and Conference Paper
Exploration of Large Digital Sky Surveys
We review some of the scientific opportunities and technical challenges posed by the exploration of the large digital sky surveys, in the context of a Virtual Observatory (VO). The VO paradigm will profoundly ...
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Chapter and Conference Paper
Cataloging of the Digitized POSS-II: Initial Scientific Results
The Second Palomar Sky Survey (POSS-II) is now nearing completion. It will cover the entire northern sky with 894 fields (6.5° square) at 5° spacings, with no gaps in the coverage. Plates are taken in three ba...
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Chapter and Conference Paper
Towards an Objectively Defined Catalog of Galaxy Clusters from the Digitized POSS-II
The subjective nature of the Abell catalog has been widely recognized as its major limitation. We report on the preliminary results of an effort to create an unbiased catalog of clusters of galaxies from the g...
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Chapter and Conference Paper
The Near-Infrared Fundamental Plane of Elliptical Galaxies and Its Evolution
We present the first Fundamental Plane (FP) that has been constructed in the K—band using near—infrared imaging source data. The slope of this IR FP differs systematically both from the optical relation and the v...
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Chapter and Conference Paper
Optical and IR Properties of Radio Galaxies as a Function of Their Radio Power
We compare optical and infrared photometric and spectroscopic properties of high-redshift radio galaxies from the 3CR and B3 surveys. At a given redshift and a fixed restframe frequency, the two samples differ...
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Chapter and Conference Paper
The Quest for Protogalaxies
The current state and the future prospects of searches for protogalaxies (PGs) are reviewed. Many high-redshift objects are now known, mostly associated in some way with AGN, and at least some of them may be y...
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Chapter and Conference Paper
The B3-VLA Sample
The use of radio sources to identify the most distant object in the Universe has been proved to be a very successful approach in observational cosmology. Studies of high flux, powerful 3CR and 1-Jy galaxies sh...
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Chapter and Conference Paper
Observational Cosmology With Faint Galaxies and a (9±1)-meter Telescope
The new generation of 8 to 10-meter class telescopes opens exciting new possibilities for observational cosmology. A brief overview is given of several types of studies of galaxy formation and evolution. Deep ...