Image sig05-017

Galaxy NGC 7793, located approximately 10 million light-years away, is a member of the Sculptor group of galaxies. This galaxy cluster, named after the constellation in which it resides, is one of the closest to our own Local Group of galaxies. This image was captured as part of the Spitzer Infrared Nearby Galaxy Survey (SINGS) Legacy Project using the telescope's Infrared Array Camera (IRAC).

As the "glowing" red emission maps out, Spitzer is able to pierce through dense clouds of gas and dust that comprise the spiral disk, revealing new star formation that is driving the evolution of the galaxy.

The SINGS image is a four channel false color composite, where blue indicates emission at 3.6 microns, green corresponds to 4.5 microns, and red to 5.8 and 8.0 microns. The contribution from starlight (measured at 3.6 microns) in this picture has been subtracted from the 5.8 and 8 micron images to enhance the visibility of the dust features.

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About the Object	Object Name: NGC 7793 Object Type: Spiral Galaxy Position (J2000): RA: 23h57m49.8s Dec: -32d35m28s (J2000) Distance: 10 million light-years/3 million parsecs Constellation: Sculptor
About the Data	Image Credit: NASA/JPL-Caltech/R. Kennicutt (University of Arizona) and the SINGS Team Instrument: IRAC Wavelength: 3.6 (blue), 4.5 (green), 5.8-8.0 (red) microns Field of View: 12.4 x 12.4 arcmin Orientation: North is 152 deg CW from up Release Date: 15 September 2005
Observers	Robert Kennicutt, Principal Investigator (Steward Observatory, University of Arizona) Lee Armus (Spitzer Science Center, Caltech) Brent Buckalew (Caltech) George Bendo (Steward Observatory, University of Arizona) Daniela Calzetti (Space Telescope Science Institute) Daniel Dale (University of Wyoming) Bruce Draine (Princeton University) Charles Engelbracht (Steward Observatory, University of Arizona) Karl Gordon (Steward Observatory, University of Arizona) George Helou (Caltech) David Hollenbach (NASA Ames Research Center) Thomas Jarrett (Caltech) Lisa Kewley (University of Hawaii) Claus Leitherer (Space Telescope Science Institute) Aigen Li (University of Missouri-Columbia) Sangeeta Malhotra (Space Telescope Science Institute) Helene McLaughlin (Space Telescope Science Institute) Martin Meyer (Space Telescope Science Institute) Eric Murphy (Yale University) Michael Regan (Space Telescope Science Institute) George Rieke (Steward Observatory, University of Arizona) Marcia Rieke (Steward Observatory, University of Arizona) Hélène Roussel (Spitzer Science Center, Caltech) Kartik Sheth (Caltech) John-David Smith (Steward Observatory, University of Arizona) Michele D. Thornley (Bucknell University, Space Telescope Science Institute) Fabian Walter (MPIA Heidelberg)

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