Recent imaging results from SINGS

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

The Spitzer Infrared Nearby Galaxy Survey (SINGS) is a comprehensive infrared imaging and spectroscopic survey of 75 nearby galaxies. One of the primary goals of SINGS is to compare star-formation rates derived from far-infrared emission with rates derived from other generally accepted star-formation indicators, specifically ultraviolet emission, Hα emission, and radio synchrotron emission. A related secondary goal is the search for other emission mechanisms, such as mid-infrared PAH emission, that may correlate with these star-formation indicators. Further study of these star-formation tracers will give us better understanding of the physical processes that link them all together. We present recent results from SINGS observations of NGC 7331 and M81 that relate to this work, and we also show some of the IRAC and MIPS images recently obtained by SINGS.

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