AAS 204th Meeting, June 2004
Session 41 Spitzer Space Telescope
Topical Related Poster, Tuesday, June 1, 2004, 10:00am-7:00pm, Ballroom

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[41.24] Spitzer commissioning observations of the interacting spiral galaxy NGC2442

M. Lacy, A. Noriega-Crespo, P.N. Appleton, B. Bhattacharya, S.J. Carey, S. Laine, P.J. Lowrance, F.R. Marleau, B.O. Nelson, W.R. Reach (Spitzer Science Center, Caltech), A. Sajina (University of British Columbia), J. Surace, G. Wilson (Spitzer Science Center, Caltech), MIPS Instrument/Instrument Support Team, IRAC Instrument Team

The southern peculiar barred spiral galaxy NGC2442 was observed as a commissioning target during the science verification phase of the Spitzer mission by both the IRAC and MIPS instruments. NGC2442 has a disturbed morphology apparently resulting from the interaction with a dwarf galaxy in the same group. Star-forming regions are spread throughout the arms, but are concentrated in the Northern spiral arm and tend to avoid the bar. The nucleus contains a starburst ring and a weak LINER nucleus with distinct mid-infrared colors. This galaxy provides an interesting example of an apparent association of starburst and nuclear activity, and is a good demonstration that many of the much more distant galaxies which will be found in surveys with Spitzer probably have a composite nature that may not be apparent in an integrated infrared SED.

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 NASA contract 1407. Support for this work was provided by NASA through an award issued by JPL/Caltech.

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