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Presentation
Spitzer Observations of Tidal Dwarf Galaxies
Proceedings of the International Astronomical Union
  • Sarah J.U. Higdon, Georgia Southern Universtiy
  • James L. Higdon, Georgia Southern Universtiy
Document Type
Conference Proceeding
Publication Date
2-14-2008
DOI
10.1017/S1743921307014251
Disciplines
Abstract
We present Spitzer observations of Tidal Dwarf Galaxies (TDGs) in three interacting systems: NGC 5291, Arp 105 & Stephan’s Quintet. The spectra show bright emission from polyaromatic hydrocarbons (PAHs), nebular lines and warm molecular hydrogen, characteristic of recent episodes of star formation. The PAH emission that falls in the IRAC 8.0 µm band leads to the TDGs having an extremely red IRAC color, with [4.5] − [8.0] > 3. The emission from PAHs is characterized by a model with mainly neutral 100-C PAH atoms.
Comments

This version of the paper was obtained from arXIV.org. In order for the work to be deposited in arXIV.org, the author must have copyright or it must be available under the Creative Commons Attribution license,Creative Commons Attribution-Noncommercial-ShareAlike license, orCreate Commons Public Domain Declaration. The publisher's final edited version of this article will be available at Proceedings of the International Astronomical Union.

Citation Information
Sarah J.U. Higdon and James L. Higdon. "Spitzer Observations of Tidal Dwarf Galaxies" Proceedings of the International Astronomical Union Vol. 3 (2008) p. 433 - 434
Available at: http://works.bepress.com/sarah_higdon/45/