Spitzer Space Telescope - Legacy General Observer Proposal #50398 Spitzer Mapping of the Outer Galaxy (SMOG) Principal Investigator: Sean Carey Institution: SSC Technical Contact: Sean Carey, SSC Co-Investigators: Alberto Noriega-Crespo, Spitzer Science Center Kathleen Kraemer, Air Force Research Laboratory Don Mizuno, Boston College Stephan Price, Air Force Research Labortory Deborah Padgett, Spitzer Science Center Francine Marleau, Spitzer Science Center Sachin Shenoy, Spitzer Science Center Thomas Kuchar, Boston College Babar Ali, IPAC Bruce Berriman, IPAC Sergio Molinari, Istituto Fisica Spazio Interplanetario-CNR Leonardo Testi, Arcetri Observatory Roc Cutri, IPAC Remy Indebetouw, University of Virginia Bill Latter, IPAC Francois Boulanger, IAS-Universite Paris-Sud Marc-Antoine Miville-Deschenes, IAS-Universite Paris-Sud Luisa Rebull, Spitzer Science Center Roberta Paladini, Spitzer Science Center Russ Shipman, SRON Steven Gibson, NAIC Lee Rottler, IPAC Mark Heyer, UMASS/FCRAO Nicolas Flagey, Spitzer Science Center Joe Hora, Harvard-Smithsonian Center for Astrophysics Chris Brunt, University of Exeter Science Category: star formation Observing Modes: IracMap MipsScan Hours Approved: 149 Abstract: We propose mapping a 21 square degree area with IRAC and MIPS of a representative region of the outer Galaxy (l=102-109, b=0-3). From these data and previous and future surveys in the submillimeter and millimeter, the specifics (rate, IMF) of star formation of the survey region will be measured. This direct measurement of the star formation efficiency will then be placed in context with ongoing work for the inner Galaxy, nearby molecular clouds and massive star forming regions, the Magellanic clouds and galaxies at larger distances. A set of optimally reduced mosaics and well-characterized source catalogs will be made available to the community. As with previous large Spitzer local group mapping programs, GLIMPSE, MIPSGAL & SAGE, this data set will be a fertile source for studying such topics as evolved stars, Galactic structure, dust physics and the diffuse ISM.