AEGISXDCXO ivo://nasa.heasarc/aegisxdcxo NASA/GSFC HEASARC Nandra et al. 2026-07-17 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table is based on the results of deep Chandra imaging of the central region of the Extended Groth Strip, the AEGIS-X Deep (AEGIS-XD) survey. When combined with previous Chandra observations of a wider area of the strip, AEGIS-X Wide (AEGIS-XW), these provide data to a nominal exposure depth of 800ks in the three central ACIS-I fields, a region of approximately 0.29 deg<sup>2</sup>. This is currently the third deepest X-ray survey in existence; a factor ~2-3 shallower than the Chandra Deep Fields (CDFs), but over an area ~3 times greater than each CDF. This table contains a catalog of 937 point sources detected in the deep Chandra observations, along with identifications of the X-ray sources from deep ground-based, Spitzer, GALEX, and Hubble Space Telescope imaging. Using a likelihood ratio analysis, the authors associate multiband counterparts for 929/937 of their X-ray sources, with an estimated 95% reliability,making the identification completeness approximately 94% in a statistical sense. Reliable spectroscopic redshifts for 353 of the X-ray sources are available predominantly from Keck (DEEP2/3) and MMT Hectospec, so the current spectroscopic completeness is ~38%. For the remainder of the X-ray sources, the authors compute photometric redshifts based on multiband photometry in up to 35 bands from the UV to mid-IR. Particular attention is given to the fact that the vast majority of the X-ray sources are active galactic nuclei and require hybrid templates. The photometric redshifts have a mean accuracy sigma = 0.04 and an outlier fraction of approximately 5%, reaching sigma = 0.03 with less than 4% outliers in the area covered by CANDELS. The new AEGIS-XD Chandra data were taken at three nominal pointing positions, which the authors have designated AEGIS-1, AEGIS-2, and AEGIS-3. These observations were all taken in the time period 2007 December 11 to 2009 June 26 using the ACIS-I instrument. The centers of the 3 AEGIS fields correspond fairly closely to those of the EGS-3, EGS-4, and EGS-5 fields of Laird et al. (2009, ApJS, 180, 102). The Rainbow Cosmological Surveys Database (<a href="http://rainbowx.fis.ucm.es/Rainbow_Database/Home.html">http://rainbowx.fis.ucm.es/Rainbow_Database/Home.html</a>; see Section 4 of the reference paper for more details) contains many multiwavelength photometric datasets giving information on optical and infrared sources in these fields. The characteristics of these datasets are given in Table 7 of the reference paper. This table was created by the HEASARC in February 2016 based on the <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJS/220/10">CDS catalog J/ApJS/220/10</a> files table11.dat, table12.dat, table13.dat, table14.dat and table15.dat. This is a service provided by NASA HEASARC . 2015ApJS..220...10N https://heasarc.gsfc.nasa.gov/W3Browse/all/aegisxdcxo.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=aegisxdcxo& GET text/xml 180 99999 true 214.521757 52.419615 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=aegisxdcxo GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_aegisxdcxo&Action=More+Options&Action=Parameter+Search&ConeAdd=1 CHANDRA 0.0166666666666667 X-ray public aegisxdcxo AEGIS-X Deep Survey Chandra X-Ray Point Source Catalog source_number Sequential Identification Number for Each Source in the Catalog meta.id;src short nullable name IAU-Style Source Designation (AEGISXD JHHMMSS.ss+DDMMSS.s) meta.id;meta.main char nullable off_axis Off-Axis Angle arcmin instr.offset double nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable error_radius X-Ray Positional Uncertainty arcsec stat.error;pos double nullable fb_counts Full (0.5-7keV) Band, Total Counts ct phot;em.X-ray int nullable fb_bck_counts Full (0.5-7keV) Band, Background Counts ct phot;instr.background;em.X-ray double nullable hb_counts Hard (2-7keV) Band, Total Counts ct phot;em.X-ray.medium short nullable hb_bck_counts Hard (2-7keV) Band, Background Counts ct phot;instr.background;em.X-ray.medium double nullable fb_flux Full Band (0.5-10keV) Flux erg/s/cm^2 phot.flux;em.X-ray double nullable fb_flux_neg_err Lower 1-Sigma Error in Full-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable fb_flux_pos_err Upper 1-Sigma Error in Full-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable hardness_ratio_neg_err Lower 1-Sigma Error in Hardness Ratio stat.error;phot.flux;arith.ratio;em.X-ray double nullable nicmos_hmag NICMOS H F160W (1581.96nm) Magnitude mag phot.mag;em.IR.H double nullable cfhtls_us_mag CFHTLS u-Star (380.56nm) AB Magnitude mag phot.mag;em.opt.U double nullable phot_redshift Photometric Redshift src.redshift.phot double nullable mmt_gp_mag MMT g-Prime (476.35nm) AB Magnitude mag phot.mag;em.opt.B double nullable hb_flux Hard Band (2-10keV) Flux erg/s/cm^2 phot.flux;em.X-ray.medium double nullable cfhtls_zp_mag CFHTLS z-Prime (882.09nm) AB Magnitude mag phot.mag;em.opt.I double nullable ctrpart_det_survey Counterpart Detection Survey meta.code char nullable hstacs_vmag_error Uncertainty in HST/ACS V Magnitude mag stat.error;phot.mag;em.opt.V double nullable sb_flux_neg_err Lower 1-Sigma Error in Soft-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable irac_3p6_um_mag_error Uncertainty in IRAC1 mag stat.error;phot.mag;em.IR.3-4um double nullable irac_5p8_um_mag_error Uncertainty in IRAC3 mag stat.error;phot.mag;em.IR.4-8um double nullable newfirm_kmag NEWFIRM K (2164.39nm) Magnitude mag phot.mag;em.IR.K double nullable ctrpart_robustness Flag [0/1] Indicates Robustness of Counterpart: 1=Secure meta.code short nullable mmt_zp_mag_error Uncertainty in z-Prime Magnitude mag stat.error;phot.mag;em.opt.I double nullable sb_bck_counts Soft (0.5-2keV) Band, Background Counts ct phot;instr.background;em.X-ray.soft double nullable hb_flux_pos_err Upper 1-Sigma Error in Hard-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable newfirm_h2_mag_error Uncertainty in H2 Magnitude mag stat.error;phot.mag;em.IR.H double nullable cfhdeep_imag CFH DEEP I (811.87nm) Magnitude mag phot.mag;em.opt.I double nullable uhb_counts Ultra Hard (4-7keV) Band, Total Counts ct phot;em.X-ray.medium short nullable cfhdeep_bmag_error Uncertainty in B Magnitude mag stat.error;phot.mag;em.opt.B double nullable sb_counts Soft (0.5-2keV) Band, Total Counts ct phot;em.X-ray.soft short nullable cfhtls_rp_mag_error Uncertainty in r-Prime Magnitude mag stat.error;phot.mag;em.opt.R double nullable uhb_bck_counts Ultra Hard (4-7keV) Band, Background Counts ct phot;instr.background;em.X-ray.medium double nullable nicmos_hmag_error Uncertainty in NICMOS H Magnitude mag stat.error;phot.mag;em.IR.H double nullable detect_bands Band(s) in Which Source Is Detected meta.code char nullable ctrpart_ra Counterpart Right Ascension (J2000) degree pos.eq.ra double nullable palomar_jmag Palomar WIRC J (1243.50nm) Magnitude mag phot.mag;em.IR.J double nullable hstacs_imag_error Uncertainty in HST/ACS I Magnitude mag stat.error;phot.mag;em.opt.I double nullable oir_source_number Optical/Infrared Counterpart Source Number meta.id.cross short nullable newfirm_j2_mag NEWFIRM J2 (1193.00nm) Magnitude mag phot.mag;em.IR.J double nullable cfhtls_gp_mag CFHTLS g-Prime (483.37nm) AB Magnitude mag phot.mag;em.opt.B double nullable rainbow_object_id Object Identification in Rainbow meta.id.cross char nullable mmt_gp_mag_error Uncertainty in g-Prime Magnitude mag stat.error;phot.mag;em.opt.B double nullable newfirm_h1_mag_error Uncertainty in H1 Magnitude mag stat.error;phot.mag;em.IR.H double nullable rainbow_dec X-Ray Declination (J2000) degree pos.eq.dec double nullable palomar_ks_mag Palomar WIRC K_s (2135.30nm) Magnitude mag phot.mag;em.IR.K double nullable caha_jmag CAHA J (1202.97nm) Magnitude mag phot.mag;em.IR.J double nullable alt_phot_redshift Second Best Photometric Redshift src.redshift.phot double nullable newfirm_h1_mag NEWFIRM H1 (1558.54nm) Magnitude mag phot.mag;em.IR.H double nullable palomar_jmag_error Uncertainty in Jmag2 mag stat.error;phot.mag;em.IR.J double nullable irac_8p0_um_mag_error Uncertainty in IRAC4 mag stat.error;phot.mag;em.IR.4-8um double nullable alt_phot_redshift_bft Best Fitting Template for the Second Best Photometric Redshift src.redshift.phot short nullable newfirm_j3_mag NEWFIRM J3 (1276.40nm) Magnitude mag phot.mag;em.IR.J double nullable phot_redshift_pdf Redshift Probability Distribution P(z) for Photometric Redshift src.redshift.phot double nullable newfirm_j3_mag_error Uncertainty in J3 Magnitude mag stat.error;phot.mag;em.IR.J double nullable caha_jmag_error Uncertainty in J Magnitude mag stat.error;phot.mag;em.IR.J double nullable galex_nuv_mag_error Uncertainty in NUV mag stat.error;phot.mag;em.UV.200-300nm double nullable redshift_confidence Spectroscopic Redshift Confidence meta.code;src.redshift short nullable palomar_ks_mag_error Uncertainty in Palomar K_s Magnitude mag stat.error;phot.mag;em.IR.K double nullable hstwfc3_f125_mag_error Uncertainty in F125 Magnitude mag stat.error;phot.mag;em.IR.J double nullable hardness_ratio_pos_err Upper 1-Sigma Error in Hardness Ratio stat.error;phot.flux;arith.ratio;em.X-ray double nullable cfhdeep_imag_error Uncertainty in I Magnitude mag stat.error;phot.mag;em.opt.I double nullable irac_5p8_um_mag Spitzer IRAC3 (5645.72nm) Magnitude mag phot.mag;em.IR.4-8um double nullable xray_phot_quality_flag Flag [0/1] Indicates Photometry Quality meta.code.qual;em.X-ray short nullable phot_redshift_68pc_max 1-Sigma Upper Value of Photometric Redshift src.redshift.phot;stat.max double nullable nicmos_jmag_error Uncertainty in NICMOS J Magnitude mag stat.error;phot.mag;em.IR.J double nullable cfhtls_gp_mag_error Uncertainty in g-Prime Magnitude mag stat.error;phot.mag;em.opt.B double nullable bii Galactic Latitude degree pos.galactic.lat double nullable nicmos_jmag NICMOS J F110W (1062.24nm) Magnitude mag phot.mag;em.IR.J double nullable mmt_ip_mag MMT i-Prime (777.05nm) AB Magnitude mag phot.mag;em.opt.I double nullable sb_flux_pos_err Upper 1-Sigma Error in Soft-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray.soft double nullable phot_redshift_68pc_min 1-Sigma Lower Value of Photometric Redshift src.redshift.phot;stat.min double nullable uhb_flux_pos_err Upper 1-Sigma Error in Ultra-Hard-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable mmt_zp_mag MMT z-Prime (903.09nm) AB Magnitude mag phot.mag;em.opt.I double nullable alt_phot_redshift_pdf Redshift Probability Distribution P(z) for the Second Best Photometric Redshift src.redshift.phot double nullable irac_3p6_um_mag Spitzer IRAC1 (3541.66nm) Magnitude mag phot.mag;em.IR.3-4um double nullable cfhdeep_rmag CFH DEEP R (659.51nm) Magnitude mag phot.mag;em.opt.R double nullable subaru_ks_mag_error Uncertainty in Ks Magnitude mag stat.error;phot.mag;em.IR.K double nullable newfirm_j1_mag_error Uncertainty in J1 Magnitude mag stat.error;phot.mag;em.IR.J double nullable hstwfc3_f125_mag HST/WFC3 F125 (1242.58nm) Magnitude mag phot.mag;em.IR.J double nullable rainbow_ra X-Ray Right Ascension (J2000) degree pos.eq.ra double nullable phot_redshift_bft Best Fitting Template for Photometric Redshift src.redshift.phot short nullable irac_4p5_um_mag_error Uncertainty in IRAC2 mag stat.error;phot.mag;em.IR.4-8um double nullable galex_nuv_mag GALEX NUV (152.81nm) Magnitude mag phot.mag;em.UV.200-300nm double nullable hb_flux_neg_err Lower 1-Sigma Error in Hard-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable newfirm_kmag_error Uncertainty in K Magnitude mag stat.error;phot.mag;em.IR.K double nullable hstwfc3_f160_mag_error Uncertainty in F160 Magnitude mag stat.error;phot.mag;em.IR.H double nullable ctrpart_dec Counterpart Declination (J2000) degree pos.eq.dec double nullable uhb_flux Ultra Hard Band (5-10 keV) Flux erg/s/cm^2 phot.flux;em.X-ray.medium double nullable mmt_up_mag MMT u-Prime (360.41nm) AB Magnitude mag phot.mag;em.opt.U double nullable newfirm_h2_mag NEWFIRM H2 (1704.88nm) Magnitude mag phot.mag;em.IR.H double nullable cfhdeep_rmag_error Uncertainty in R Magnitude mag stat.error;phot.mag;em.opt.R double nullable subaru_rc_mag SUBARU R_c (648.64nm) AB Magnitude mag phot.mag;em.opt.R double nullable cfhtls_ip_mag CFHTLS i-Prime (765.91nm) AB Magnitude mag phot.mag;em.opt.I double nullable cfhtls_rp_mag CFHTLS r-Prime (623.41nm) AB Magnitude mag phot.mag;em.opt.R double nullable galex_fuv_mag_error Uncertainty in FUV mag stat.error;phot.mag;em.UV.100-200nm double nullable cfhtls_zp_mag_error Uncertainty in z-Prime Magnitude mag stat.error;phot.mag;em.opt.I double nullable mmt_up_mag_error Uncertainty in u-Prime Magnitude mag stat.error;phot.mag;em.opt.U double nullable num_phot_points Number of Photometric Points meta.number short nullable redshift Spectroscopic Redshift src.redshift double nullable cfhtls_us_mag_error Uncertainty in u-Star Magnitude mag stat.error;phot.mag;em.opt.U double nullable galex_fuv_mag GALEX FUV (227.11nm) Magnitude mag phot.mag;em.UV.100-200nm double nullable phot_redshift_90pc_min 90% Lower Value of Photometric Redshift src.redshift.phot;stat.min double nullable hstwfc3_f160_mag HST/WFC3 F160 (1532.47nm) Magnitude mag phot.mag;em.IR.H double nullable subaru_ks_mag Subaru MOIRCS K_s (2135.44nm) Magnitude mag phot.mag;em.IR.K double nullable hstacs_vmag HST/ACS V F606W (579.67nm) Magnitude mag phot.mag;em.opt.V double nullable uhb_flux_neg_err Lower 1-Sigma Error in Ultra-Hard-Band Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable sb_flux Soft Band (0.5-2keV) Flux erg/s/cm^2 phot.flux;em.X-ray.soft double nullable hardness_ratio Hardness Ratio (HR) phot.flux;arith.ratio;em.X-ray double nullable phot_redshift_90pc_max 90% Upper Value of Photometric Redshift src.redshift.phot;stat.max double nullable ref_redshift Spectroscopic Redshift Reference meta.ref;src.redshift short nullable irac_4p5_um_mag Spitzer IRAC2 (4482.62nm) Magnitude mag phot.mag;em.IR.4-8um double nullable lii Galactic Longitude degree pos.galactic.lon double nullable subaru_rc_mag_error Uncertainty in R_c Magnitude mag stat.error;phot.mag;em.opt.R double nullable newfirm_j1_mag NEWFIRM J1 (1044.14nm) Magnitude mag phot.mag;em.IR.J double nullable hstacs_imag HST/ACS I F814W (823.40nm) Magnitude mag phot.mag;em.opt.I double nullable newfirm_j2_mag_error Uncertainty in J2 Magnitude mag stat.error;phot.mag;em.IR.J double nullable cfhtls_ip_mag_error Uncertainty in i-Prime Magnitude mag stat.error;phot.mag;em.opt.I double nullable irac_8p0_um_mag Spitzer IRAC4 (7826.48nm) Magnitude mag phot.mag;em.IR.4-8um double nullable mmt_ip_mag_error Uncertainty in i-Prime Magnitude mag stat.error;phot.mag;em.opt.I double nullable cfhdeep_bmag CFH DEEP B (440.20nm) Magnitude mag phot.mag;em.opt.B double nullable