ECDFSNEW ivo://nasa.heasarc/ecdfsnew NASA/GSFC HEASARC Xue et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains the improved point-source catalog for the 250-ks Extended Chandra Deep Field-South (E-CDF-S) Survey, implementing a number of recent improvements in Chandra source-cataloguing methodology. For the E-CDF-S, the main catalog (entries from which are indicated with parameter values of source_sample = "Main" in this HEASARC representation) contains 1003 X-ray sources detected with wavdetect at a false-positive probability threshold of 10<sup>-5</sup> that also satisfy a binomial-probability source-selection criterion of P < 0.002. Such an approach maximizes the number of reliable sources detected: a total of 275 main-catalog sources are new compared to the Lehmer et al. (2005, ApJS, 161, 21) E-CDF-S main catalog. The authors also provide an E-CDF-S supplementary catalog that consists of 56 sources (entries from which are indicated with parameter values of source_sample = "Supp" in this HEASARC representation) detected at the same wavdetect threshold and having P of 0.002-0.1 and K<sub>s</sub> <= 22.3 mag counterparts. For all 1059 E-CDF-S sources, including the 318 newly detected ones (these being generally fainter and more obscured), the authors determine X-ray source positions utilizing centroid and matched-filter techniques; they also provide multi-wavelength identifications, apparent magnitudes of counterparts, spectroscopic and/or photometric redshifts, basic source classifications, and estimates of observed active galactic nucleus and galaxy source densities around respective field centers. Simulations show that the E-CDF-S main catalog is highly reliable and reasonably complete. Background and sensitivity analyses indicate that the on-axis mean flux limits reached represent a factor of ~1.5-2.0 improvement over the previous E-CDF-S limit. The 250-ks E-CDF-S is composed of four distinct and contiguous ~ 250-ks Chandra pointings that flank the CDF-S proper, consisting of a total of nine separate observations taken between 2004 February 29 and November 20 (see Lehmer et al., 2005, ApJS, 161, 21 for more details). This table was created by the HEASARC in August 2016 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJS/224/15">CDS Catalog J/ApJS/224/15</a> files table9.dat (the main source catalog) and table12.dat (the supplementary source catalog). This is a service provided by NASA HEASARC . 2016ApJS..224...15X https://heasarc.gsfc.nasa.gov/W3Browse/all/ecdfsnew.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=ecdfsnew& GET text/xml 180 99999 true 53.12820833 -28.10358333 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=ecdfsnew GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_ecdfsnew&Action=More+Options&Action=Parameter+Search&ConeAdd=1 CHANDRA 0.0166666666666667 X-ray public ecdfsnew Extended Chandra Deep Field South 250-ks Improved Point Source C source_number Sequential Identification Number for Each Source in the Specified Sample meta.id;src short nullable name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable error_radius Positional Uncertainty arcsec stat.error;pos double nullable fb_counts_limit Limit Flag for Full-Band (0.5-7.0keV) Counts meta.code;phot;em.X-ray char nullable fb_counts Full-Band (0.5-7.0keV) Counts ct phot;em.X-ray double nullable fb_counts_neg_err Lower Uncertainty for Full-Band (0.5-7.0keV) Counts ct stat.error;phot;em.X-ray double nullable fb_counts_pos_err Upper Uncertainty for Full-Band (0.5-7.0keV) Counts ct stat.error;phot;em.X-ray double nullable fb_flux_limit Limit Flag for Full-Band Flux meta.code;phot.flux;em.X-ray char nullable fb_flux Full-Band Flux erg/s/cm^2 phot.flux;em.X-ray double nullable redshift Preferred Redshift Adopted by This Paper src.redshift 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 phot_redshift_lu2 Alternative Luo et al. 2010, J/ApJS/187/560, Photometric Redshift src.redshift.phot double nullable hb_flux Hard-Band Flux erg/s/cm^2 phot.flux;em.X-ray.medium double nullable note_flag Flag [EC] Indicates Additional Note meta.code char nullable simple_ra SIMPLE 3.6um Right Ascension degree pos.eq.ra double nullable goodss_mag AB Magnitude of GOODS-S z-Band Counterpart mag phot.mag;em.opt.I double nullable ref_spec_redshift Reference Code for Spectroscopic Redshift meta.ref;src.redshift short nullable x11_source_number X11 CDFS Source Identification meta.id.cross char nullable phot_redshift_ca_flag Quality Flag for Cardamone et al. Photometric Redshift meta.code;src.redshift.phot double nullable log_prob_false_pos Logarithm of Minimum False-Positive Probability stat.probability;src;em.X-ray short nullable vla_mag AB Magnitude of VLA 1.4GHz Counterpart mag phot.mag;em.radio.750-1500MHz double nullable hb_counts Hard-Band (2-7keV) Counts ct phot;em.X-ray.medium double nullable musyc_mag AB Magnitude of MUSYC K-Band Counterpart mag phot.mag;em.IR.K double nullable phot_redshift_ca_stp Flag Indicates Whether a Stellar Template Is Preferred for Cardamone Redshift src.redshift.phot short nullable photon_index Photon Index spect.index;em.X-ray double nullable phot_redshift_lu1_min Lower Limit on Luo et al. Photometric Redshift src.redshift.phot;stat.min double nullable oir_ctrpart_mag AB Magnitude of Optical/NIR/Radio Counterpart mag phot.mag double nullable x11_dec X11 CDFS Declination degree pos.eq.dec double nullable candels_ra CANDELS H-Band Right Ascension degree pos.eq.ra double nullable phot_class_sk Photometric Classification of Skelton et al. Photometric Redshift src.class char nullable phot_redshift_ra Rafferty et al. 2011, J/ApJ/742/3, Photometric Redshift src.redshift.phot double nullable hb_counts_pos_err Upper Uncertainty for Hard-Band (2-7keV) Counts ct stat.error;phot;em.X-ray.medium double nullable goodss_dec GOODS-S z-Band Declination degree pos.eq.dec double nullable music_ra MUSIC K-Band Right Ascension degree pos.eq.ra double nullable lii Galactic Longitude degree pos.galactic.lon double nullable gems_mag AB Magnitude of GEMS z-Band Counterpart mag phot.mag;em.opt.I double nullable off_axis Off-Axis Angle arcmin instr.offset double nullable phot_redshift_ca_max Upper Limit on Cardamone et al. Photometric Redshift src.redshift.phot;stat.max double nullable sb_flux Soft-Band Flux erg/s/cm^2 phot.flux;em.X-ray.soft double nullable phot_redshift_lu1 Luo et al. 2010, J/ApJS/187/560, Photometric Redshift src.redshift.phot double nullable phot_redshift_sk Skelton et al. 2014, J/ApJS/214/24, Photometric Redshift src.redshift.phot double nullable source_sample Field Indicates Published Table/Sample from Which the Entry Originates meta.ref;meta.table char nullable sb_counts_neg_err Lower Uncertainty for Soft-Band (0.5-2.0keV) Counts ct stat.error;phot;em.X-ray.soft double nullable oir_ra Optical/NIR/Radio Counterpart Right Ascension degree pos.eq.ra double nullable hb_counts_limit Limit Flag for Hard-Band (2-7keV) Counts meta.code;phot;em.X-ray.medium char nullable lx Absorption-Corrected, Rest-Frame 0.5-7keV Luminosity erg/s phys.luminosity;em.X-ray double nullable phot_redshift_ra_max Upper Limit on Rafferty et al. Photometric Redshift src.redshift.phot;stat.max double nullable photon_index_neg_err Lower Uncertainty for Photon Index stat.error;spect.index;em.X-ray double nullable bii Galactic Latitude degree pos.galactic.lat double nullable x11_ra X11 CDFS Right Ascension degree pos.eq.ra double nullable phot_redshift_min Lower Limit on Hsu et al. Photometric Redshift src.redshift.phot;stat.min double nullable sb_counts_pos_err Upper Uncertainty for Soft-Band (0.5-2.0keV) Counts ct stat.error;phot;em.X-ray.soft double nullable phot_redshift Hsu et al. 2014ApJ...796...60H Photometric Redshift src.redshift.phot double nullable phot_class_ra Photometric Classification of Rafferty et al. Photometric Redshift src.class char nullable band_ratio Band Ratio (HB/SB) phot.count;arith.ratio;em.X-ray double nullable phot_redshift_ca_min Lower Limit on Cardamone et al. Photometric Redshift src.redshift.phot;stat.min double nullable goodss_ra GOODS-S z-Band Right Ascension degree pos.eq.ra double nullable tenis_ra TENIS Ks-Band Right Ascension degree pos.eq.ra double nullable sb_counts Soft-Band (0.5-2.0keV) Counts ct phot;em.X-ray.soft double nullable spec_redshift Spectroscopic Redshift src.redshift double nullable phot_redshift_sk_flag Quality Flag for Skelton et al. Photometric Redshift meta.code;src.redshift.phot double nullable musyc_ra MUSYC K-Band Right Ascension degree pos.eq.ra double nullable phot_redshift_alt Alternative Hsu et al. 2014ApJ...796...60H Photometric Redshift src.redshift.phot double nullable phot_redshift_sk_max Upper Limit on Skelton et al. Photometric Redshift src.redshift.phot;stat.max double nullable oir_dec Optical/NIR/Radio Counterpart Declination degree pos.eq.dec double nullable hb_exposure Hard-Band Effective Exposure Time s time.duration;obs.exposure;em.X-ray.medium double nullable off_set Offset Between Optical/NIR/Radio Counterpart and X-Ray Positions arcsec pos.angDistance double nullable phot_redshift_ra_min Lower Limit on Rafferty et al. Photometric Redshift src.redshift.phot;stat.min double nullable hb_flux_limit Limit Flag for Hard-Band Flux meta.code;phot.flux;em.X-ray.medium char nullable sb_flux_limit Limit Flag for Soft-Band Flux meta.code;phot.flux;em.X-ray.soft char nullable gems_dec GEMS z-Band Declination degree pos.eq.dec double nullable hb_counts_neg_err Lower Uncertainty for Hard-Band (2-7keV) Counts ct stat.error;phot;em.X-ray.medium double nullable gems_ra GEMS z-Band Right Ascension degree pos.eq.ra double nullable candels_mag AB Magnitude of CANDELS H-Band Counterpart mag phot.mag;em.IR.H double nullable band_ratio_pos_err Upper Uncertainty for Band Ratio stat.error;phot.count;arith.ratio;em.X-ray double nullable band_ratio_neg_err Lower Uncertainty for Band Ratio stat.error;phot.count;arith.ratio;em.X-ray double nullable l05_source_number L05 ECDFS Source Identification meta.id.cross char nullable log_prob_no_src Logarithm of Binomial No-Source Probability stat.probability;src;em.X-ray double nullable musyc_dec MUSYC K-Band Declination degree pos.eq.dec double nullable simple_mag AB Magnitude of SIMPLE 3.6um Counterpart mag phot.mag;em.IR.3-4um double nullable fb_exposure Full-Band Effective Exposure Time s time.duration;obs.exposure;em.X-ray double nullable spec_redshift_flag Quality Flag for Spectroscopic Redshift (None, Secure or Insecure) meta.code;src.redshift char nullable candels_dec CANDELS H-Band Declination degree pos.eq.dec double nullable sb_counts_limit Limit Flag for Soft-Band (0.5-2.0keV) Counts meta.code;phot;em.X-ray.soft char nullable wfi_ra WFI R-Band Right Ascension degree pos.eq.ra double nullable vla_dec VLA 1.4GHz Declination degree pos.eq.dec double nullable simple_dec SIMPLE 3.6um Declination degree pos.eq.dec double nullable music_dec MUSIC K-Band Declination degree pos.eq.dec double nullable tenis_dec TENIS Ks-Band Declination degree pos.eq.dec double nullable phot_redshift_lu1_max Upper Limit on Luo et al. Photometric Redshift src.redshift.phot;stat.max double nullable l05_ra L05 ECDFS Right Ascension degree pos.eq.ra double nullable class Browse Object Classification src.class short nullable l05_dec L05 ECDFS Declination degree pos.eq.dec double nullable vla_ra VLA 1.4GHz Right Ascension degree pos.eq.ra double nullable wfi_dec WFI R-Band Declination degree pos.eq.dec double nullable phot_redshift_max Upper Limit on Hsu et al. Photometric Redshift src.redshift.phot;stat.max double nullable phot_redshift_sk_min Lower Limit on Skelton et al. Photometric Redshift src.redshift.phot;stat.min double nullable oir_ctrpart_catalog Originating Catalog of Optical/NIR/Radio Counterpart meta.ref char nullable psf_flag Flag Indicates Source Shows a Radial Profile Consistent with Local PSF meta.code;instr.det.psf short nullable photon_index_pos_err Upper Uncertainty for Photon Index stat.error;spect.index;em.X-ray double nullable broad_type Source Type (AGN, Galaxy, or Star) src.class char nullable wfi_mag AB Magnitude of WFI R-Band Counterpart mag phot.mag;em.opt.R double nullable phot_redshift_ca Cardamone et al. 2010, J/ApJS/189/270 Photometric Redshift src.redshift.phot double nullable tenis_mag AB Magnitude of TENIS Ks-Band Counterpart mag phot.mag;em.IR.K double nullable sb_exposure Soft-Band Effective Exposure Time s time.duration;obs.exposure;em.X-ray.soft double nullable music_mag AB Magnitude of MUSIC K-Band Counterpart mag phot.mag;em.IR.K double nullable phot_redshift_ca_si Stellarity Index of Cardamone et al. Photometric Redshift src.redshift.phot double nullable