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  1. No Access

    Chapter

    Hst Observations of Abell 2125: Radio Emission and the Butcher-Oemler Effect

    We have surveyed more than 40 Abell clusters at redshifts z ≥ 0.2 with the VLA at 20cm down to radio powers of P20cm ~ 1022 W Hz-1. For P20cm > 1023, the radio luminosity function (RLF) is dominated by nuclear/AG...

    M. J. Ledlow, F. N. Owen, W. C. Keel… in Toward a New Millennium in Galaxy Morpholo… (2000)

  2. No Access

    Article

    HST Observations of Abell 2125: Radio Emission and the Butcher-Oemler Effect

    M.J. Ledlow, F.N. Owen, W.C. Keel, V. Andersen in Astrophysics and Space Science (1999)

  3. No Access

    Article

    Sub-galactic clumps at a redshift of 2.39 and implications for galaxy formation

    A large number of very faint, compact objects have been found at a redshift of 2.39 in optical images of the distant Universe. The objects appear to be star-forming spheroids smaller than the bulge of a spiral...

    S. M. Pascarelle, R. A. Windhorst, W. C. Keel, S. C. Odewahn in Nature (1996)

  4. No Access

    Chapter and Conference Paper

    Distribution and Content of Dust in Overlap** Galaxy Systems

    We present a progress report on our program to determine the opacity of spiral disks directly, rather than statistically, by imaging foreground spirals partially projected against background galaxies. The non-ove...

    R. E. White III, W. C. Keel, C. J. Conselice in New Extragalactic Perspectives in the New … (1996)

  5. No Access

    Chapter and Conference Paper

    Stellar Populations in Mixed Pairs of Galaxies

    The interpration of the interaction in galaxies is simplified in mixed pairs (E+S) because most or all of the cold gas can be traced to an origin in a single galaxy (S). We used spectroscopy, imaging, far-IR, ...

    D. F. De Mello, W. C. Keel, J. W. Sulentic, R. Rampazzo in Stellar Populations (1995)

  6. No Access

    Chapter and Conference Paper

    The nature of faint galaxies from the medium deep survey and other deep HST images

    R. A. Windhorst, S. P. Driver, E. J. Ostrander… in Galaxies in the Young Universe (1995)

  7. No Access

    Chapter

    HST/FOS UV-Spectroscopy of Weak Radio Galaxies At z = 0.1-0.6

    We present HSTFOS-spectra for 6 early-type weak radio galaxies with 0.08 < z < 0.53 and V = 17-21 mag. Most of these have deconvolved r -1/4 HST light-profiles out to z < 0.6. Lyman-α emission has...

    R. A. Windhorst, S. M. Pascarelle… in Frontiers of Space And Ground-Based Astron… (1994)

  8. No Access

    Chapter and Conference Paper

    Nuclear Activity: How Irritating Are Neighbours?

    Many observational studies in the last decade have strongly suggested that galaxy - galaxy interactions do affect the properties of spiral galaxies, in particular the properties of their nuclei. The first indi...

    J. M. van der Hulst, E. Hummel, W. C. Keel… in Dynamics and Interactions of Galaxies (1990)

  9. No Access

    Chapter and Conference Paper

    The Effects of Galaxy — Galaxy Interactions on Nuclear Activity

    The notion that galaxy — galaxy interactions do affect the properties of galaxy nuclei is not new. The earliest indications come from surveys of the radio continuum emission from spiral galaxies. Sulentic (197...

    J. M. van der Hulst, E. Hummel, W. C. Keel… in Spectral Evolution of Galaxies (1986)