The FLAIR Shapley-Hydra (FLASH) redshift survey catalogue consists of 4613 galaxies brighter than b (J) = 16.7 (corrected for Galactic extinction) over a 700-deg(2) region of sky in the general direction of the Local Group motion. The survey region is a 70degreesx 10degrees strip spanning the sky from the Shapley Supercluster to the Hydra cluster, and contains 3141 galaxies with measured redshifts. Designed to explore the effect of the galaxy concentrations in this direction (in particular the Supergalactic plane and the Shapley Supercluster) upon the Local Group motion, the 68 per cent completeness allows us to sample the large-scale structure better than similar sparsely-sampled surveys. The survey region does not overlap with the areas covered by ongoing wide-angle (Sloan or 2dF) complete redshift surveys. In this paper, the first in a series, we describe the observation and data reduction procedures, the analysis for the redshift errors and survey completeness, and present the survey data.
|Number of pages||11|
|Journal||Royal Astronomical Society. Monthly Notices|
|Publication status||Published - 1 Mar 2003|
- large-scale structure of Universe
- cosmology : observations
- galaxies : distances and redshifts
- galaxies : general