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  1. No Access

    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...

    S. G. Djorgovski, R. Brunner, A. Mahabal… in Statistical Challenges in Astronomy (2003)

  2. No Access

    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 ...

    S. G. Djorgovski, R. J. Brunner, A. A. Mahabal, S. C. Odewahn… in Mining the Sky (2001)

  3. No Access

    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...

    S. G. Djorgovski, R. R. De Carvalho… in New Horizons from Multi-Wavelength Sky Sur… (1998)

  4. No Access

    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...

    R. R. De Carvalho, S. G. Djorgovski, M. Pahre, R. R. Gal… in Wide-Field Spectroscopy (1997)

  5. No Access

    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...

    M. A. Pahre, S. G. Djorgovski… in Galaxy Scaling Relations: Origins, Evoluti… (1997)

  6. No Access

    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...

    L. Maxfield, S. G. Djorgovski, D. Thompson, M. A. Pahre… in New Light on Galaxy Evolution (1996)

  7. No Access

    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...

    S. G. Djorgovski in New Light on Galaxy Evolution (1996)

  8. No Access

    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...

    M. Vigotti, S. G. Djorgovski, L. Gregorini, U. Klein… in Extragalactic Radio Sources (1996)

  9. No Access

    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 ...

    S. G. Djorgovski in Science with the VLT (1995)