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Two-dimensional kinematics of SLACS lenses – IV. The complete VLT–VIMOS data set

Authors

  • Oliver Czoske,

    Corresponding author
    1. Institut für Astronomie der Universität Wien, Türkenschanzstraße 17, 1180 Wien, Austria
    2. Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, the Netherlands
      E-mail: oliver.czoske@univie.ac.at
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  • Matteo Barnabè,

    1. Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, the Netherlands
    2. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94035-4085, USA
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  • Léon V. E. Koopmans,

    1. Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, the Netherlands
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  • Tommaso Treu,

    1. Department of Physics, University of California, Santa Barbara, CA 93101, USA
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  • Adam S. Bolton

    1. Department of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USA
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Based on observations made with ESO Telescopes at the La Silla or Paranal Observatories under programme IDs 075.B-0226 and 177.B-0682 and on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.

E-mail: oliver.czoske@univie.ac.at

ABSTRACT

This paper presents the full Very Large Telescope (VLT)/VIMOS-IFU data set and related data products from an ESO Large Programme with the observational goal of obtaining two-dimensional kinematic data of early-type lens galaxies, out to one effective radius. The sample consists of 17 early-type galaxies (ETGs) selected from the SLACS gravitational-lens survey. The galaxies cover the redshift range from 0.08 to 0.35 and have stellar velocity dispersions between 200 and 350 km s−1. This programme is complemented by a similar observational programme on Keck, using long-slit spectroscopy. In combination with multi-band imaging data, the kinematic data provide stringent constraints on the inner mass profiles of ETGs beyond the local Universe. Our Large Programme thus extends studies of nearby ETGs (e.g. SAURON/ATLAS3D) by an order of magnitude in distance and towards higher masses. We provide an overview of our observational strategy, the data products (luminosity-weighted spectra and Hubble Space Telescope images) and derived products (i.e. two-dimensional fields of velocity dispersions and streaming motions) that have been used in a number of published and forthcoming lensing, kinematic and stellar-population studies. These studies also pave the way for future studies of ETGs at z ≈ 1 with the upcoming extremely large telescopes.

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