2dFGRS Data Release Revisions

Final Release: The following are the revisions made to the 2dFGRS Final Release systems and data since the DVD version was created.

  • Release Date
    • The 2dFGRS Final Release was made public on 30 June 2003.

  • Selection code
    • The survey mask selection code and data files were revised after the DVD version of the release was created. Download the revised version of select_release.tar.gz on these WWW pages to replace the version on the DVD.

100k Release: For completeness, the following were the revisions made to the 2dFGRS 100k Release systems and data after the 100k CDROM version was created.

  • Release Date
    • The 2dFGRS 100k Release was made public on 30 June 2001.

  • Query Database
    • The mSQL database is shutdown everyday at 0630 local time (2030 UT) while the scratch areas are cleared down. Any queries being performed at this time will be killed and results from earlier queries deleted.
    • Problems where large queries return no data arise when a large total number of fields are being returned. The problem can be avoided by either: 1) requesting only the fields/sources you are really interested in, or 2) if you must query a significant fraction of the entire database of 467214 sources, break the query into 4 by limiting the serial number range: i.e. use WHERE serial>0 AND serial <=100000 and then make the query again with serial>100000 AND serial <=200000 etc.

  • Photometric catalogues
    • Input photometric catalogues have corrected description of the parameter JON.

  • Spectroscopic catalogues
    • all.observations.idz and best.observations.idz files have been updated to correct all redshift values to be real. Previous version (CD) had some integer zero values.
    • best.observations.idz file has been updated to ensure best spectra details are listed for every source.

Matthew Colless, colless@mso.anu.edu.au,