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Spirals, Bridges and Tails: Star Formation and the Disturbed ISM in Colliding Galaxies before Merger

  • Curtis Struck
  • , Philip N. Appleton
  • , Vassilis Charmandaris
  • , William Reach
  • , Beverly J Smith
  • Iowa State University
  • California Institute of Technology
  • Spitzer Science Center
  • University of Crete
  • Forth
  • Observatoire de Meudon
  • Foundation for Research and Technology - Hellas
  • Cornell University

Research output: Other contribution

Abstract

We propose to use Spitzer's unprecedented sensitivity and wide spatial and spectral evolution to study the distribution of star formation in a sample of colliding galaxies with a wide range of tidal and splash structures. Star forming environments like those in strong tidal spirals, and in extra-disk structures like tails were probably far more common in the early stages of galaxy evolution, and important contributors to the net star formation. Using the Spitzer data and data from other wavebands, we will compare the pattern of SF to maps of gas and dust density and phase distribution. With the help of dynamical modeling, we will relate these in turn to dynamical triggers, to better understand the trigger mechanisms. We expect our observations to complement both the SINGS archive and the archives produced by other GO programs, such as those looking at merger remnants or tidal dwarf formation.
Original languageAmerican English
TypeOther
StatePublished - Sep 2004

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