IntroductionThe 6dF Galaxy Survey (6dFGS) contains 136,304 spectra and 110,256 new redshifts from across the southern sky. It was carried out on the UK Schmidt telescope using the Six-degree Field (6dF) multi-object fibre spectrograph from 2001 to 2006. It covers more than ten times the sky area of the successful 2dF Galaxy Redshift Survey (2dFGRS) and almost twice that of the Sloan Digital Sky Survey.
The primary driver for the survey was the measurement of the redshifts and peculiar velocities for a near-infrared selected sample of galaxies from the Two Micron All Sky Survey (2MASS). Additional target lists from various surveys were also included to fill out the target allocations. More information on 6dFGS can be found on the 6dFGS web site and a comprehensive survey description is given by Jones et al. (2004, MNRAS 355, 747). Other 6dFGS publications are also available.
6dFGS spectral observations were carried out separately in two spectral regions, which we have labelled V and R. The spectral halves are combined into a single VR frame prior to redshift determination, (where both halves were available). The design of the database is similar to that used for the 2dFGRS in that parameterised data are stored in a relational database. Each TARGET object is also represented by a multi-extension FITS file with holds thumbnail images of the object and spectra. The database is accessed/queried using Structured Query Language (SQL).
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