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Near-UV Merger Signatures in Early-Type Galaxies

  • Jodie R. Martin
  • Robert W. O’Connell
  • John E. Hibbard
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

Summary

Hierarchical assembly of early-type galaxies (Es and S0s) over an extended period of time will result in mixed-generation stellar populations. Here we look for signatures of composite populations in broad-band, near-ultraviolet (2500-3400 Å), high-resolution HST imaging of the cores of 12 bright early-type galaxies without obvious dust or active galactic nuclei. Near-UV imaging is a sensitive probe for the detection of younger components with ages in the range of 10 Myr to 5 Gyr. Only two galaxies have central colors (r< 0.75 re) that are consistent with a single-generation population. The other ten require a composite population.

Keywords

Point Spread Function Active Galactic Nucleus Stellar Population Hubble Space Telescope Elliptical Galaxy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York 2009

Authors and Affiliations

  • Jodie R. Martin
    • 1
  • Robert W. O’Connell
    • 1
  • John E. Hibbard
    • 2
  1. 1.University of Virginia Charlottesville
  2. 2.National Radio Astronomy Observatory Charlottesville

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