SWIRE Survey Fields: ELAIS N1

Black: IRAC sources Blue: Optical sources from the ELAIS INT Wide-Field Survey of Babbedge et al. (2004): one or more detections in Ugriz Red: Sources detected by IRAC and also in one or more optical band Green: R-band sources from the KPNO MOSAIC camera imaging of Fadda et al. (2004) Yellow dots: Vertices of a polygon that encloses the mutual coverage area for optical and IRAC References: Babbedge et al. 2004, MNRAS submitted. The ELAIS INT/WFS images can be obtained from the Infrared Science Archive IRSA at: http://irsa.ipac.caltech.edu/data/SPITZER/SWIRE Fadda, D., Jannuzi, B., Ford, A., & Storrie-Lombardi, L.J., 2004, AJ, in press [astro-ph/0403490]. These data can be obtained from The Spitzer Science Center at: http://ssc.spitzer.caltech.edu/fls/extragal/noaor.html