CDFS Spectroscopic Merged Catalogue README - version 1.0 Description of columns: Column 0, "RA": The RA coordinates of the object targeted in degrees. Column 1, "DEC": The DEC coordinates of the object targeted in degrees. Column 2, "Z_SPEC": The spectroscopic redshift. Column 3, "Z_SOURCE": The source of the spectroscopic redshift, as the source of the redshift can be multiple surveys the source number can be a combination of the following values: ; MUSYC catalgoue, source Szokoly et al. (2004) - 1 ; MUSYC catalgoue, source Croom et al. (2001) - 2 ; MUSYC catalgoue, source Van der Wel et al. (2004) - 4 ; MUSYC catalgoue, source Cristiani et al. (2000) - 8 ; MUSYC catalgoue, source Strogler et al. (2004) - 16 ; MUSYC catalgoue, source Lira et al., in prep - 32 ; MUSYC catalgoue, source Treister et al. (2009) - 64 ; MUSYC catalgoue, source Cimatti et al. (2002, K20) - 128 ; MUSYC catalgoue - Kriek et al. (2008) - 256 ; VVDS - Le Fevre et al. (2013) - 512 ; VLT/FORS2 - ESO Phase 3 release - 1024 ; GOODS/VIMOS DR 2.0.1 - 2048 ; Silverman et al. (2010) - 4096 ; 6dF - 8192 ; 2dF - 16384 ; Dickinson et al. (2004) - 32768 ; IMAGES (Ravikumar et al., 2007) - 65536 ; GMASS (Kurk eto al., 2012) - 131072 See below for more infomation on the different sources and any overlap. (* see info about these catalogues in other info) Column 4, "Z_QUAL": The quality flag (Q) is designated using the method from Colless et al. (2001) method (same as for the GAMA database which covers many Help fields). The quality flag (Q), is ranked on a five-point scale, with the interpretation: Q = 1 means no redshift could be estimated; Q = 2 means a possible, but doubtful, redshift estimate; Q = 3 means a probable redshift (notionally 90 per cent confidence), Q = 4 means a reliable redshift (notionally 99 per cent confidence); Q = 5 means a reliable redshift and a high-quality spectrum. Note that this quality parameter is determined entirely by the subjective judgement of the user. For the CDFS field we have added a quality flag of 2.5 for the VVDS survey. This was meant to correspond to the 75-85% reliability bin, but comparisons with deeper observations suggest the reliability is up at 85\%. Also for redshifts from a single emission line with continum measurements that has ~80% probably of being correct are given this flag value. Column 5, "OBJID" Object ID where the name depends on the source of the spectroscopic measurement. Information on selection functions/completness can be found in the seperate pdf document. Other info: To make this the redshifts have been prioritised in order of quality flags and the highest priority redshift is used. For catalogues which included redshifts for stars have been removed. Catalogues are typically matched given a 2" positional accuracy, however we check all matches up to 5" and assess which are real associations. Given the large number of redshifts we have very few conflicts, any conflicts where it was not obvious what was causing the problem are listed below and the choice made. Conflicts: This is a record of any conflicting sources when merging the catalohues (only for sources considered reliable Q >= 3) and don't have an obvious solution. MUSYC 46494 has a redshift of 1.087 compared to 0.2775 from VVDS, clearly same object. Have chosen the MUSYC redshift, but possibly incorrect. MUSTC 41362/VVDS-J033217.31-274807.6 have identical redshifts but are 2.8" seperated. There are two seperate galaxies there, assuming is correct but possibly a mis-identification. VVDS-J033245.84-274407.9 and GDS J033245.70-274408.5 are 1.9" with different redshift, two galaxies present so kept both. MUSYC 40194 and GDS J033212.47-274836.7, are 1.8" apart with different redshift, two galaxies present so kept both. MUSYC 42769 and GDS J033216.02-274750.0 are 1.7" apart with different redshift, two galaxies present so kept both. MUSYC 40004 and GDS J033212.98-274841.1 are 1.6" apart with different redshift, two galaxies present so kept both. VVDS-J033231.09-275547.0 and GDS J033231.05-275548.2 are 1.3" apart with different redshifts, two galaxies present so kept both. VVDS-J033237.94-275408.9 and GDS J033238.01-275408.2 are 1.1" apart with differnet redshifts, two galaxies present so kept both. VVDS-J033214.05-275124.5 from VVDS has a redshift of 1.32 which conflicts with VLT/FORS2 GDS J033214.05-275124.5 of 1.2. Have chosen the FORS2 redshift VVDS-J033237.18-275730.7 from VVDS and GOODS-J033237.17-275730.4 from VIMOS are 0.9" apart and have different reliable redshift, no HST image available, assuming seperate. VVDS-J033238.86-275349.5 from VVDS and GOODS-J033238.85-275349.5 from VIMOS are the same object with conflicting redshifts, have gone with the VVDS measurement VVDS-J033252.94-275309.9 from VVDS and GOODS-J033252.95-275309.8 from VIMOS are the same object with conflicting redshifts, have gone with the VIMOS measurement as better flag value MUSYC 10250 from Source 32 and Lehmer XID 255 from Silverman are with 0.1" with conflicting redshifts, have gone with Source 32 as better flag value. MUSYC 12240 from Source 32 and Lehmer XID 611 from Silverman are with 0.1" with conflicting redshifts, have gone with Silverman as better published value. MUSYC 21401 from Source 32 and Lehmer XID 578 from Silverman are with 0.1" with conflicting redshifts, have gone with Silverman as better published value. MUSYC 24193 from Source 32 and Lehmer XID 603 from Silverman are with 0.1" with conflicting redshifts, have gone with Source 32 as better flag value. MUSYC 24372 from Source 32 and Lehmer XID 226 from Silverman are with 0.1" with conflicting redshifts, have gone with Silverman as better published value. MUSYC 38745 from Source 32 and Lehmer XID 728 from Silverman are with 0.1" with conflicting redshifts, have gone with Source 32 as better flag value. MUSYC 48197 from Source 32 and Lehmer XID 154 from Silverman are with 0.3" with conflicting redshifts, have gone with Source 32 as better flag value. MUSYC 70032 from Source 32 and Lehmer XID 117 from Silverman are with 0.3" with conflicting redshifts, have gone with Source 32 as better flag value. MUSYC 71127 from Source 32 and Lehmer XID 373 from Silverman are with 0.1" with conflicting redshifts, have gone with Source 32 as better flag value. MUSYC 73826 from Source 32 and Lehmer XID 248 from Silverman are with 0.1" with conflicting redshifts, have gone with Silverman as better published value. GOODS-J033150.96-274115.9 and Lehmer XID 192 from Silvermanare with 0.2" with conflicting redshifts, have gone with Source 2048 as better flag value. GDS J033206.81-274524.3 from VLT/FORS2 and EISJ033206.73-274524.3 from IMAGES are with 1.0" but disagree, two seperate galaxies on HST image so kept both MUSYC 47086 from source 128 and EISJ033225.12-274606.2 from IMAGES are within 0.6" but disagree. Both appear to be from the same galaxy, gone with IMAGES. GOODS-J033223.13-275425.8 from source 2048 and EISJ033223.15-275426.0from IMAGES are within 0.3" but disagree. Both appear to be from the same galaxy, gone with VIMOS due to higher quality flag. MUSYC 36037 from source 16 and EISJ033242.45-275025.2 from IMAGES are within 0.3" but disagree. Both appear to be from the same galaxy, gone with IMAGES. EISJ033211.58-274623.1 from IMAGES disagrees with multiple surveys so have gone with them. VVDS-J033210.77-275601.0 from VVDS and EISJ033210.78-275601.2 from IMAGES are within 0.2" but disagree. Both appear to be from the same galaxy, gone with VVDS. VVDS-J033211.33-275609.7 from VVDS and EISJ033211.34-275609.8 from IMAGES are within 0.2" but disagree. Both appear to be from the same galaxy, gone with VVDS. VVDS-J033243.63-275122.6 from VVDS and EISJ033243.64-275122.6 from IMAGES are within 0.3" but disagree. Both appear to be from the same galaxy, gone with VVDS. VVDS-J033219.38-274051.8 from VVDS and EISJ033219.39-274051.8 from IMAGES are within 0.1" but disagree. Both appear to be from the same galaxy, gone with VVDS with higher Q flag. GDS J033223.26-275101.8 from VLT/FORS2 and EISJ033223.27-275101.9 from IMAGES are within 0.2" but disagree (just). Both appear to be from the same galaxy, gone with VLT/FORS2. GDS J033226.81-274156.4 from VLT/FORS2 and EISJ033226.82-274156.6 from IMAGES are within 0.2" but disagree. Both appear to be from the same galaxy, gone with VLT/FORS2. GDS J033235.84-274059.5 from VLT/FORS2 and EISJ033235.86-274059.8 from IMAGES are within 0.4" but disagree (just). Both appear to be from the same galaxy, gone with VLT/FORS2. GOODS-J033239.68-274306.7 from VIMOS and EISJ033239.68-274306.8 from IMAGES are within 0.1" but disagree. Both appear to be from the same galaxy, gone with VIMOS with higher Q flag. GOODS-J033159.25-274341.5 from VIMOS and EISJ033159.26-274341.6 from IMAGES are within 0.3" but disagree. Both appear to be from the same galaxy, gone with VIMOS with higher Q flag. GOODS-J033200.91-274241.0 from VIMOS and EISJ033200.93-274241.2 from IMAGES are within 0.3" but disagree. Both appear to be from the same galaxy, gone with VIMOS with higher Q flag. GOODS-J033208.37-274310.1 from VIMOS and EISJ033208.38-274310.3 from IMAGES are within 0.3" but disagree. Both appear to be from the same galaxy, gone with VIMOS with higher Q flag. GOODS-J033236.38-275117.5 from VIMOS and EISJ033236.39-275117.8 from IMAGES are within 0.3" but disagree. Both appear to be from the same galaxy, gone with VIMOS with higher Q flag. RID 20 from Silverman (Source 4096) and EISJ033128.61-274934.7 from IMAGES are 0.2" but disagree. Have fone with IMAGES redshift. VVDS-J033225.78-274501.8 and GMASS-1592 within 2" but clearly different targets. GOODS-J033218.43-274757.0 and GMASS-428 are within 0.3" but they do appear to be different targets. Have kept both.