Browsing by Author/Contributor "Ledlow, Michael J."

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  • A catalog of Nearby Poor Clusters of Galaxies 

    White, Richard A.; Bliton, Mark; Bhavsar, Suketu; Bornmann, Patricia L.; Burns, Jack O.; Ledlow, Michael J.; Loken, Christen (American Astronomical Society, 1999)
    A catalog of 732 optically selected, nearby poor clusters of galaxies covering the entire sky north of [3¡ declination is presented. The poor clusters, called WBL clusters, were identified as concentrations of three or ...

  • The X-Ray Luminosity Function of Nearby Rich and Poor Clusters of Galaxies:A Cosmological Probe 

    Ledlow, Michael J.; Loken, Christen; Burns, Jack O.; Owen, Frazer N.; Voges, Wolfgang (American Astronomical Society, 1999)
    In this Letter, we present a new determination of the local (z · 0.09) X-ray luminosity function (XLF) using a large, statistical sample of 294 Abell clusters and the ROSAT All-Sky Survey. Despite the optical selection of ...