Corpus ID: 18323359

Mid-Infrared Spectral Diagnostics of Nearby Galaxies

  title={Mid-Infrared Spectral Diagnostics of Nearby Galaxies},
  author={Daniel A. Dale and the Sings team},
  journal={arXiv: Astrophysics},
The Spitzer Space Telescope is pushing into new frontiers in high redshift astronomy. Closer to home, Spitzer is making an equally large impact on our understanding of galaxy formation and evolution. In this contribution we present mid-infrared diagnostics based largely on data from the Spitzer Infrared Nearby Galaxies Survey (SINGS). Our main result is that these mid-infrared diagnostics effectively constrain a target's dominant power source. The combination of a high ionization line index and… Expand

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