NuSTAR Serendipitous Survey 40-Month Primary Source Catalog

NuSTAR Serendipitous Survey 40-Month Primary Source Catalog NUSTARSSC ivo://nasa.heasarc/nustarssc NASA/GSFC HEASARC Lansbury et al. 2026-10-02 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains the first full catalog and science results for the Nuclear Spectroscopic Telescope Array (NuSTAR) Serendipitous Survey. The catalog incorporates data taken during the first 40 months of NuSTAR operation, which provide ~20 Ms of effective exposure time over 331 fields, with an areal coverage of 13 deg2, and 498 sources (the abstract of the reference paper states that there are 497 sources) detected in total over the 3-24 keV energy range. There are 276 sources with spectroscopic redshifts and classifications, largely resulting from the authors' extensive campaign of ground-based spectroscopic follow-up. The authors characterize the overall sample in terms of the X-ray, optical, and infrared source properties. The sample is primarily composed of active galactic nuclei (AGN), detected over a large range in redshift from z = 0.002 to 3.4 (median redshift z of 0.56), but also includes 16 spectroscopically confirmed Galactic sources. There is a large range in X-ray flux, from log (f3-24keV) ~ -14 to -11 (in units of erg s-1 cm-2), and in rest-frame 10-40 keV luminosity, from log (L_10-40keV) ~ 39 to 46 (in units of erg s-1), with a median of 44.1. Approximately 79% of the NuSTAR sources have lower-energy (<10 keV) X-ray counterparts from XMM-Newton, Chandra, and Swift XRT observations. The mid-infrared (MIR) analysis, using WISE all-sky survey data, shows that MIR AGN color selections miss a large fraction of the NuSTAR-selected AGN population, from ~15% at the highest luminosities (LX > 1044 erg s-1) to ~80% at the lowest luminosities (LX < 1043 erg s-1). The authors' optical spectroscopic analysis finds that the observed fraction of optically obscured AGN (i.e., the type 2 fraction) is F_Type 2_ = 53 (+14, -15) per cent, for a well-defined subset of the 8-24 keV selected sample. This is higher, albeit at a low significance level, than the type 2 fraction measured for redshift- and luminosity-matched AGNs selected by <10 keV X-ray missions. This table contains the Primary NuSTAR Serendipitous Source Catalog of 498 sources found using the source detection procedure described in Section 2.3 of the reference paper, and listed in Table 5 (op. cit.). Additional information on these Primary Catalog sources that the authors obtained using optical spectroscopy is available in Table 6 of the reference paper (q.v.). This table does not contain the 64 sources in the Secondary NuSTAR Serendipitous Source Catalog that were found using wavdetect and that are listed in Table 7 of the reference paper: this is available in the HEASARC database as a separate table, dubbed <a href="/W3Browse/nustar/nustarssc2.html">NUSTARSSC2</a>. This table was created by the HEASARC in July 2017 based on the machine-readable version of Table 5 from the reference paper, the Primary NuSTAR Serendipitous Source Catalog, that was obtsined from the ApJ web site. This is a service provided by NASA HEASARC . 2017ApJ...836...99L https://heasarc.gsfc.nasa.gov/W3Browse/all/nustarssc.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=nustarssc& GET text/xml 180 99999 true 228.224965 -81.405005 0.0333333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=nustarssc GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_nustarssc&Action=More+Options&Action=Parameter+Search&ConeAdd=1 NUSTAR 0.0333333333333333 Infrared Optical X-ray public nustarssc NuSTAR Serendipitous Survey 40-Month Primary Source Catalog name Unique NuSTAR 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 sb_net_counts Net Soft Band Counts (Background-Subtracted) ct phot;em.X-ray.medium double nullable sb_net_counts_error The Error in Net Soft Band Counts ct stat.error;phot;em.X-ray.medium double nullable hb_net_counts Net Hard Band Counts (Background-Subtracted) ct phot;em.X-ray double nullable hb_net_counts_error The Error in Net Hard Band Counts ct stat.error;phot;em.X-ray double nullable photon_index Effective Photon Index (Gamma) spect.index;em.X-ray double nullable photon_index_neg_err Lower Uncertainty for Gamma stat.error;spect.index;em.X-ray double nullable photon_index_pos_err Upper Uncertainty for Gamma stat.error;spect.index;em.X-ray double nullable redshift Spectroscopic Redshift src.redshift double nullable rf_hardxray_luminosity Rest-Frame 10-40 keV Luminosity erg/s phys.luminosity;em.X-ray.hard 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 db_fb_detect_flag Deblended Full Band Detection Flag meta.code;obs;em.X-ray short nullable w2_mag_error Error in W2 Magnitude mag stat.error;phot.mag;em.IR.4-8um double nullable fb_flux Observed-Frame Full Flux erg/s/cm^2 phot.flux;em.X-ray double nullable db_fb_counts_error The 84% Confidence Level in Total Deblended Full Band Counts ct stat.error;phot;em.X-ray double nullable db_sb_net_counts_error The Error in Net Deblended Soft Band Counts ct stat.error;phot;em.X-ray.medium double nullable hb_bck_counts Hard Background Counts Scaled to Source Aperture ct phot;instr.background;em.X-ray double nullable fb_net_rate Net Full Count Rate ct/s phot.count;em.X-ray double nullable fb_counts Total Full Band Counts ct phot;em.X-ray double nullable w2_mag WISE W2 Band, 4.6um, Profile-Fit Vega Magnitude mag phot.mag;em.IR.4-8um double nullable sb_exposure Soft Band Exposure Time s time.duration;obs.exposure;em.X-ray.medium double nullable log_db_fb_false_prob Logarithm of Deblended Full Band False Probability stat.probability;em.X-ray double nullable w3_mag_error Error in W3 Magnitude mag stat.error;phot.mag;em.IR.8-15um double nullable hb_net_rate Net Hard Count Rate ct/s phot.count;em.X-ray double nullable fb_rate Total Full Band Count Rate ct/s phot.count;em.X-ray double nullable band_ratio_neg_err Lower Uncertainty for Hard-to-Soft Band Ratio stat.error;phot.count;arith.ratio;em.X-ray double nullable sb_bck_rate Soft Background Count Rate ct/s phot.count;instr.background;em.X-ray.medium double nullable softxray_ctrpart_ra Soft X-Ray Counterpart Right Ascension degree pos.eq.ra double nullable db_hb_counts Total Deblended Hard Band Counts ct phot;em.X-ray double nullable fb_exposure Full Band Exposure Time s time.duration;obs.exposure;em.X-ray double nullable db_hb_net_counts_error The Error in Net Deblended Hard Band Counts ct stat.error;phot;em.X-ray double nullable db_hb_net_rate Deblended Net Hard Count Rate ct/s phot.count;em.X-ray double nullable hb_rate Total Hard Band Count Rate ct/s phot.count;em.X-ray double nullable lii Galactic Longitude degree pos.galactic.lon double nullable softxray_ctrpart_orig Soft X-Ray Counterpart Observatory Code meta.ref;obs char nullable sb_flux_error The 84% Confidence Level in Soft Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray.medium double nullable hb_flux_error The 84% Confidence Level in Hard Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable db_fb_net_rate Deblended Net Full Count Rate ct/s phot.count;em.X-ray double nullable band_ratio_pos_err Upper Uncertainty for Hard-to-Soft Band Ratio stat.error;phot.count;arith.ratio;em.X-ray double nullable w1_mag WISE W1 Band, 3.4um, Profile-Fit Vega Magnitude mag phot.mag;em.IR.3-4um double nullable softxray_flux Observed-Frame 3-8 keV X-Ray Counterpart Flux erg/s/cm^2 phot.flux;em.X-ray.medium double nullable softxray_nustar_offset Soft X-Ray and NuSTAR Position Offset arcsec pos.angDistance;em.X-ray double nullable sb_counts Total Soft Band Counts ct phot;em.X-ray.medium double nullable db_sb_net_counts Net Deblended Soft Band Counts (Background-Subtracted) ct phot;em.X-ray.medium double nullable log_db_sb_false_prob Logarithm of Deblended Soft Band False Probability stat.probability;em.X-ray.medium double nullable db_sb_counts Total Deblended Soft Band Counts ct phot;em.X-ray.medium double nullable primary_assoc_flag Source Associated with Primary Science Target meta.code;src short nullable opt_ra Optical Counterpart Right Ascension degree pos.eq.ra double nullable softxray_tot_flux Total Combined 3-8 keV X-Ray Flux within 30-arcsec of NUSTAR erg/s/cm^2 phot.flux;em.X-ray.medium double nullable sb_bck_counts Soft Background Counts Scaled to Source Aperture ct phot;instr.background;em.X-ray.medium double nullable source_number Sequential Identification Number for Each Source in the Catalog meta.id;src short nullable sb_counts_error The 84% Confidence Level in Total Soft Band Counts ct stat.error;phot;em.X-ray.medium double nullable db_sb_detect_flag Deblended Soft Band Detection Flag meta.code;obs;em.X-ray.medium short nullable db_sb_counts_error The 84% Confidence Level in Total Deblended Soft Band Counts ct stat.error;phot;em.X-ray.medium double nullable sb_rate_error The 84% Confidence Level in Total Soft Band Count Rate ct/s stat.error;phot.count;em.X-ray.medium double nullable db_fb_counts Total Deblended Full Band Counts ct phot;em.X-ray double nullable hb_detect_flag Hard (8-24 keV) Band Detection Flag meta.code;obs;em.X-ray short nullable bii Galactic Latitude degree pos.galactic.lat double nullable hb_rate_error The 84% Confidence Level in Total Hard Band Count Rate ct/s stat.error;phot.count;em.X-ray double nullable w4_mag WISE W4 Band, 22um, Profile-Fit Vega Magnitude mag phot.mag;em.IR.15-30um double nullable fb_net_counts_error The Error in Net Full Band Counts ct stat.error;phot;em.X-ray double nullable rmag Optical Counterpart R Band Vega Magnitude mag phot.mag;em.opt.R double nullable w3_mag WISE W3 Band, 12um, Profile-Fit Vega Magnitude mag phot.mag;em.IR.8-15um double nullable fb_flux_error The 84% Confidence Level in Full Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable db_hb_detect_flag Deblended Hard Band Detection Flag meta.code;obs;em.X-ray short nullable hb_counts_error The 84% Confidence Level in Total Hard Band Counts ct stat.error;phot;em.X-ray double nullable db_hb_counts_error The 84% Confidence Level in Total Deblended Hard Band Counts ct stat.error;phot;em.X-ray double nullable db_fb_net_counts_error The Error in Net Deblended Full Band Counts ct stat.error;phot;em.X-ray double nullable fb_rate_error The 84% Confidence Level in Total Full Band Count Rate ct/s stat.error;phot.count;em.X-ray double nullable opt_dec Optical Counterpart Declination degree pos.eq.dec double nullable log_db_hb_false_prob Logarithm of Deblended Hard Band False Probability stat.probability;em.X-ray double nullable db_sb_net_rate_error The 84% Confidence Level in SdbNCR ct/s stat.error;phot.count;em.X-ray double nullable fb_bck_counts Full Background Counts Scaled to Source Aperture ct phot;instr.background;em.X-ray double nullable fb_detect_flag Full (3-24 keV) Band Detection Flag meta.code;obs;em.X-ray short nullable log_sb_false_prob Logarithm of Soft Band False Probability stat.probability;em.X-ray.medium double nullable w1_mag_error Error in W1 Magnitude mag stat.error;phot.mag;em.IR.3-4um double nullable wise_ctrpart_dec WISE Counterpart Declination degree pos.eq.dec double nullable fb_bck_rate Full Background Count Rate ct/s phot.count;instr.background;em.X-ray double nullable db_fb_net_rate_error The 84% Confidence Level in FdbNCR ct/s stat.error;phot.count;em.X-ray double nullable hb_net_rate_error The Error in Net Hard Count Rate ct/s stat.error;phot.count;em.X-ray double nullable db_hb_net_rate_error The 84% Confidence Level in HdbNCR ct/s stat.error;phot.count;em.X-ray double nullable w4_mag_error Error in W4 Magnitude mag stat.error;phot.mag;em.IR.15-30um double nullable log_fb_false_prob Logarithm of Full Band False Probability stat.probability;em.X-ray double nullable db_hb_net_counts Net Deblended Hard Band Counts (Background-Subtracted) ct phot;em.X-ray double nullable hb_counts Total Hard Band Counts ct phot;em.X-ray double nullable sb_net_rate_error The Error in Net Soft Count Rate ct/s stat.error;phot.count;em.X-ray.medium double nullable hb_exposure Hard Band Exposure Time s time.duration;obs.exposure;em.X-ray double nullable wise_nustar_offset WISE and NuSTAR Position Offset arcsec pos.angDistance;em.IR;em.X-ray double nullable log_hb_false_prob Logarithm of Hard Band False Probability stat.probability;em.X-ray double nullable wise_ctrpart_ra WISE Counterpart Right Ascension degree pos.eq.ra double nullable opt_nustar_offset Optical and NuSTAR Position Offset arcsec pos.angDistance;em.opt;em.X-ray double nullable db_fb_net_counts Net Deblended Full Band Counts (Background-Subtracted) ct phot;em.X-ray double nullable fb_net_counts Net Full Band Counts (Background-Subtracted) ct phot;em.X-ray double nullable sb_net_rate Net Soft Count Rate ct/s phot.count;em.X-ray.medium double nullable db_detect_flag Flag Indicates Source Remains Significant After Deblending meta.code;src;em.X-ray short nullable softxray_ctrpart_dec Soft X-Ray Counterpart Declination degree pos.eq.dec double nullable fb_counts_error The 84% Confidence Level in Total Full Band Counts ct stat.error;phot;em.X-ray double nullable band_ratio Hard-to-Soft Band Ratio phot.count;arith.ratio;em.X-ray double nullable sb_detect_flag Soft (3-8 keV) Band Detection Flag meta.code;obs;em.X-ray.medium short nullable opt_ctrpart_orig Adopted Optical Counterpart Observatory Code meta.ref;src;em.opt char nullable sb_rate Total Soft Band Count Rate ct/s phot.count;em.X-ray.medium double nullable hb_bck_rate Hard Background Count Rate ct/s phot.count;instr.background;em.X-ray double nullable fb_net_rate_error The Error in Net Full Count Rate ct/s stat.error;phot.count;em.X-ray double nullable sb_flux Observed-Frame Soft Flux erg/s/cm^2 phot.flux;em.X-ray.medium double nullable aird2015_source_flag Aird et al. 2015 Flag meta.code;src short nullable hb_flux Observed-Frame Hard Flux erg/s/cm^2 phot.flux;em.X-ray double nullable db_sb_net_rate Deblended Net Soft Count Rate ct/s phot.count;em.X-ray double nullable