Spitzer Observations of Stephan's Quintet -- IGM Dust and Gas in a Multi-galaxy Collision

Details Spitzer Observations of Stephan's Quintet -- IGM Dust and Gas in a Multi-galaxy Collision Spitzer Observations of Stephan's Quintet -- IGM Dust and Gas in a Multi-galaxy Collision

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20713803x&link_type=abstract

American Astronomical Society Meeting 207, #138.03; Bulletin of the American Astronomical Society, Vol. 37, p.1392

Astronomy and Astrophysics

Astronomy

Scientific paper

Stephan's Quintet (SQ) is the most famous and well studied compact group of galaxies. The rich literature archive of multi-wavelength data reveal one of the most fascinating pictures in the universe. We see a complex web of interactions between member galaxies and various constituents of the intragroup medium (IGM) which, in turn, have triggered spectacular activities such as a 40 kpc large scale shock and a strong IGM starburst. In this poster we will present our new Spitzer observations of SQ with unprecedented resolution and sensitivity. The observations impose new constraints on the physical conditions of the IGM gas and dust, the distribution and history of the star formation activity in member galaxies and in the IGM, as well as the effects of various interaction events that have occurred in the recent ( ˜ 1 Gyr) history of the group. Our results may have far-reaching inferences on studies of multi-nuclei ULIRGs and 'chain galaxies' found in high-z surveys. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech

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