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 |