Chandra AEGIS-X Catalogue, v2 Please note the following before implementing the X-ray catalogue: 1) Source detection has been carried out in 4 energy bands. These are: - full, detection in 0.5-7.0 keV band, fluxes quoted for 0.5-10 keV - soft, detection in 0.5-2.0 keV band, fluxes quoted for 0.5-2.0 keV - hard, detection in 2.0-7.0 keV band, fluxes quoted for 2.0-10 keV - uhrd, detection in 4.0-7.0 keV band, fluxes quoted for 4.0-10 keV 2) Only sources with positive Poisson probabilities (columns 8, 19, 30 & 41) less than or equal to 4E-6 should be considered a significant detection. Every source listed in the catalogue was found to be significant in at lease one detection band. If the Poisson probability is '-1' then the source was not significantly detected in that band. 3) With a false detection probability threshold of 4E-6 we expect there to be no more than 19 spurious sources in the catalogue. 4) The celestial positions have been shifted (simple offset RA and Dec offset) to remove any overall offset with the DEEP2 pcat. 5) Photometry was carried out using 90% encircled energy radius (EER) apertures in each band. There are three exceptions to this: the full band fluxes for egs_0367 and egs_0633, and the hard band flux for egs_0457, were calculated using the 70% EEF. 6) The fluxes have been calculated assuming an intrinsic power-law spectrum with Gamma=1.4, and Galactic absorption. 7) The source counts given in columns 78-85 should not be used for photometry. 8) Sources with PHOT_FLAG values of 1 or 2 have problematic photometry. Sources with PHOT_FLAG=1 have another source close by that may have contaminated the detected fluxes. Sources with PHOT_FLAG=2 have another source very nearby. For PHOT_FLAG=2 the fluxes will definitely be contaminated and there is also the possibility that the sources are confused - the positions may be wrong and there may actually only be one source. 9) The fluxes have been calculated using 2 different methods - a Bayesian and a classical method. The Bayesian fluxes have been corrected for the Eddington bias using the X-ray logN-logS and more accurately describe faint sources. For the Bayesian fluxes (columns 20-22, 34-36, 45-50, 62-64) the error bars and the upper limits (if given) correspond to 1-sigma. For the classical fluxes (columns 17-19, 31-33, 42-44, 59-60) the error bars are 1-sigma. If an upper limit is given instead of a flux and error bar, then the upper limit is the 99% limit. For full details about Chandra data reduction, analysis and source detection see Laird et al. 2008, submitted to ApJS. The paper is available at http://astro.imperial.ac.uk/research/aegis/cats.shtml. Questions or comments? Please contact Elise Laird, e.laird@imperial.ac.uk. ColNo Name Unit 1 ID AEGIS Chandra catalogue ID 2 Field_ID Source ID in detection field (i.e. egs1, egs2,...) 3 RA degrees Right Ascension, corrected to DEEP2 frame 4 Dec degrees Declination, corrected to DEEP2 frame 5 Pos_error arcsec Error in Chandra position 6 sky_x Sky (physical) x coordinate in detection field images 7 sky_y Sky (physical) y coordinate in detection field images 8 OAA arcmin Off axis angle (OAA) 9 Full_prob Full band false detection Poisson probability 10 Full_net_cts cts Full band net counts, 0.5-7keV 11 Full_cts_upp cts Full band counts upper error/limit (1-sigma error/99% confidence if upper limit) 12 Full_cts_low cts Full band counts lower error (1-sigma error) 13 Full_bkg_cts cts Full band background counts 14 Full_ct_rate ct/s/cm2 Full band count rate, 0.5-10keV 15 Full_ct_rate_upp ct/s/cm2 Full band count rate upper error/limit, 0.5-10keV (1-sigma error/99% confidence if limit) 16 Full_ct_rate_low ct/s/cm2 Full band count rate lower error, 0.5-10keV (1-sigma error) 17 Full_flux erg/s/cm2 Full band flux classical method, erg/s/cm2 0.5-10keV 18 Full_flux_upp erg/s/cm2 Full band flux classical method upper error/limit (1-sigma error/99% confidence if limit), erg/s/cm2 0.5-10keV 19 Full_flux_low erg/s/cm2 Full band flux classical method lower error (1-sigma error), erg/s/cm2 0.5-10keV 20 Full_flux_Bay erg/s/cm2 Full band flux Bayesian method, erg/s/cm2 0.5-10keV 21 Full_flux_Bay_upp erg/s/cm2 Full band flux Bayesian method upper error/limit (1-sigma error), erg/s/cm2 0.5-10keV 22 Full_flux_Bay_low erg/s/cm2 Full band flux Bayesian method lower error (1-sigma error), erg/s/cm2 0.5-10keV 23 Soft_prob Soft band false detection Poisson probability 24 Soft_net_cts cts Soft band net counts, 0.5-2keV 25 Soft_cts_upp cts Soft band counts upper error/limit (1-sigma error/99% confidence if limit) 26 Soft_cts_low cts Soft band counts lower error (1-sigma error) 27 Soft_bkg_cts cts Soft band background counts 28 Soft_ct_rate ct/s/cm2 Soft band count rate, 0.5-2keV 29 Soft_ct_rate_upp ct/s/cm2 Soft band count rate upper error/limit, 0.5-2keV (1-sigma error/99% confidence if limit) 30 Soft_ct_rate_low ct/s/cm2 Soft band count rate lower error, 0.5-2keV (1-sigma error) 31 Soft_flux erg/s/cm2 Soft band flux classical method, erg/s/cm2 0.5-2keV 32 Soft_flux_upp erg/s/cm2 Soft band flux classical method upper error/limit (1-sigma error/99% confidence if limit), erg/s/cm2 0.5-2keV 33 Soft_flux_low erg/s/cm2 Soft band flux classical method lower error (1-sigma error), erg/s/cm2 0.5-2keV 34 Soft_flux_Bay erg/s/cm2 Soft band flux Bayesian method, erg/s/cm2 0.5-2keV 35 Soft_flux_Bay_upp erg/s/cm2 Soft band flux Bayesian method upper error/limit (1-sigma error), erg/s/cm2 0.5-2keV 36 Soft_flux_Bay_low erg/s/cm2 Soft band flux Bayesian method lower error (1-sigma error), erg/s/cm2 0.5-2keV 37 Hard_prob Hard band false detection Poisson probability 38 Hard_net_cts cts Hard band net counts, 2-7keV 39 Hard_cts_upp cts Hard band counts upper error/limit (1-sigma error/99% confidence if limit) 40 Hard_cts_low cts Hard band counts lower error (1-sigma error) 41 Hard_bkg_cts cts Hard band background counts 42 Hard_ct_rate ct/s/cm2 Hard band count rate, 2-10keV 43 Hard_ct_rate_upp ct/s/cm2 Hard band count rate upper error/limit, 2-10keV (1-sigma error/99% confidence if limit) 44 Hard_ct_rate_low ct/s/cm2 Hard band count rate lower error, 2-10keV (1-sigma error) 45 Hard_flux erg/s/cm2 Hard band flux classical method, erg/s/cm2 2-10keV 46 Hard_flux_upp erg/s/cm2 Hard band flux classical method upper error/limit (1-sigma error/99% confidence if limit), erg/s/cm2 2-10keV 47 Hard_flux_low erg/s/cm2 Hard band flux classical method lower error (1-sigma error), erg/s/cm2 2-10keV 48 Hard_flux_Bay erg/s/cm2 Hard band flux Bayesian method, erg/s/cm2 2-10keV 49 Hard_flux_Bay_upp erg/s/cm2 Hard band flux Bayesian method upper error/limit (1-sigma error), erg/s/cm2 2-10keV 50 Hard_flux_Bay_low erg/s/cm2 Hard band flux Bayesian method lower error (1-sigma error), erg/s/cm2 2-10keV 51 Uhrd_prob Uhrd band false detection Poisson probability 52 Uhrd_net_cts cts Uhrd band net counts, 4-7keV 53 Uhrd_cts_upp cts Uhrd band counts upper error/limit (1-sigma error/99% confidence if limit) 54 Uhrd_cts_low cts Uhrd band counts lower error (1-sigma error) 55 Uhrd_bkg_cts cts Uhrd band background counts 56 Uhrd_ct_rate ct/s/cm2 Uhrd band count rate, 4-10keV 57 Uhrd_ct_rate_upp ct/s/cm2 Uhrd band count rate upper error/limit, 4-10keV (1-sigma error/99% confidence if limit) 58 Uhrd_ct_rate_low ct/s/cm2 Uhrd band count rate lower error, 4-10keV (1-sigma error) 59 Uhrd_flux erg/s/cm2 Uhrd band flux classical method, erg/s/cm2 5-10keV 60 Uhrd_flux_upp erg/s/cm2 Uhrd band flux classical method upper error/limit (1-sigma error/99% confidence if limit), erg/s/cm2 5-10keV 61 Uhrd_flux_low erg/s/cm2 Uhrd band flux classical method lower error (1-sigma error), erg/s/cm2 5-10keV 62 Uhrd_flux_Bay erg/s/cm2 Uhrd band flux Bayesian method, erg/s/cm2 5-10keV 63 Uhrd_flux_Bay_upp erg/s/cm2 Uhrd band flux Bayesian method upper error/limit (1-sigma error), erg/s/cm2 5-10keV 64 Uhrd_flux_Bay_low erg/s/cm2 Uhrd band flux Bayesian method lower error (1-sigma error), erg/s/cm2 5-10keV 65 HR_classical Hardness Ratio, classical method: HR=(H-S)/(H+S). H,S are net hard and soft band counts. 66 HR_Bay Hardness Ratio, Bayesian (BEHR) method 67 HR_Bay_upp Hardness Ratio upper error (1-sigma), Bayesian (BEHR) method 68 HR_Bay_low Hardness Ratio lower error (1-sigma), Bayesian (BEHR) method 69 Phot_flag Photometry flag (0=good, 1=contaminated/overlapping source, 2=confused source?) 70 Full_tot_cts_90 cts Full band counts using 90% EER 71 Full_bkg_cts_90 cts Full band background counts for 90% EER 72 Soft_tot_cts_90 cts Soft band counts using 90% EER 73 Soft_bkg_cts_90 cts Soft band background counts for 90% EER 74 Hard_tot_cts_90 cts Hard band counts using 90% EER 75 Hard_bkg_cts_90 cts Hard band background counts for 90% EER 76 Uhrd_tot_cts_90 cts Uhrd band counts using 90% EER 77 Uhrd_bkg_cts_90 cts Uhrd band background counts for 90% EER 78 Full_tot_cts_70 cts Full band counts using 70% EER 79 Full_bkg_cts_70 cts Full band background counts for 70% EER 80 Soft_tot_cts_70 cts Soft band counts using 70% EER 81 Soft_bkg_cts_70 cts Soft band background counts for 70% EER 82 Hard_tot_cts_70 cts Hard band counts using 70% EER 83 Hard_bkg_cts_70 cts Hard band background counts for 70% EER 84 Uhrd_tot_cts_70 cts Uhrd band counts using 70% EER 85 Uhrd_bkg_cts_70 cts Uhrd band background counts for 70% EER 86 F-S_offset arcsec Positional offset between full and soft band counterparts 87 F-H_offset arcsec Positional offset between full and hard band counterparts 88 F-U_offset arcsec Positional offset between full and uhrd band counterparts 89 Full_exposure cm2s Mean effective exposure (@ 2.5 keV) in full band 90% EER area 90 Soft_exposure cm2s Mean effective exposure (@ 1.0 keV) in soft band 90% EER area 91 Hard_exposure cm2s Mean effective exposure (@ 4.0 keV) in hard band 90% EER area 92 Uhrd_exposure cm2s Mean effective exposure (@ 5.5 keV) in uhrd band 90% EER area 93 Full_50psf arcsec 50% encircled energy radius (EER) @ 2.5 keV 94 Full_60psf arcsec 60% EER @ 2.5 keV 95 Full_70psf arcsec 70% EER @ 2.5 keV 96 Full_80psf arcsec 80% EER @ 2.5 keV 97 Full_90psf arcsec 90% EER @ 2.5 keV 98 Full_95psf arcsec 95% EER @ 2.5 keV 99 Soft_50psf arcsec 50% encircled energy radius (EER) @ 1.0 keV 100 Soft_60psf arcsec 60% EER @ 1.0 keV 101 Soft_70psf arcsec 70% EER @ 1.0 keV 102 Soft_80psf arcsec 80% EER @ 1.0 keV 103 Soft_90psf arcsec 90% EER @ 1.0 keV 104 Soft_95psf arcsec 95% EER @ 1.0 keV 105 Hard_50psf arcsec 50% encircled energy radius (EER) @ 4.0 keV 106 Hard_60psf arcsec 60% EER @ 4.0 keV 107 Hard_70psf arcsec 70% EER @ 4.0 keV 108 Hard_80psf arcsec 80% EER @ 4.0 keV 109 Hard_90psf arcsec 90% EER @ 4.0 keV 110 Hard_95psf arcsec 95% EER @ 4.0 keV 111 Uhrd_50psf arcsec 50% encircled energy radius (EER) @ 5.5 keV 112 Uhrd_60psf arcsec 60% EER @ 5.5 keV 113 Uhrd_70psf arcsec 70% EER @ 5.5 keV 114 Uhrd_80psf arcsec 80% EER @ 5.5 keV 115 Uhrd_90psf arcsec 90% EER @ 5.5 keV 116 Uhrd_95psf arcsec 95% EER @ 5.5 keV 117 HR HR