The following plot shows a comparison between galaxy redshift surveys: squares represent predominantly magnitude-limited surveys; circles represent surveys involving colour cuts for photometric redshift selection; while triangles represent highly targeted surveys. Filled symbols show completed surveys and the hashed region shows the parameter space covered by magnitude-limited surveys. Surveys are colour coded according to selection wavelength. GAMA, shown by a star, cuts signicantly into new parameter space, closing the gap between the very deep narrow-field surveys like VVDS and the shallow wide-field surveys like SDSS.


     

    The figure below shows the survey regions for GAMA North. The points represent SDSS galaxies in a narrow magnitude range. Green points represent areas where Galactic extinction in r is < 0.2; orange points for 0.2-0.4; and red points for > 0.4. The black and blue lines define the boundaries for spectroscopy from SDSS and 2dFGRS, respectively. The stars represent stars from the bright star catalogue. There will be 3 disjoint GAMA survey regions in the North. The thick dash-and-dotted red lines represent the 12 deg × 4 deg = 48 deg2 survey regions that will be targeted, resulting in a total GAMA North survey area of 144 deg2:

    Region RA range DEC range
    GAMA09 129.0  –  141.0 -1  –  +3
    GAMA12 174.0  –  186.0 -2  –  +2
    GAMA15 211.5  –  223.5 -2  –  +2


     

    The following plot shows the GAMA survey regions in context.

    Legend:
    White rectangles: GAMA survey regions
    Magenta rectangles: 2dFGRS survey regions
    Yellow strip: MGC survey regions
    Red stars: Bright Star Catalogue
    Green dots: NGC
    Blue boxes: Abell catalogue
    Cyan blobs: Galaxies within 10 Mpc (local sphere of influence)
    Red dotted/dashed lines: Galactic plane


    Joe Liske