ISGRI4YRCT ivo://nasa.heasarc/isgri4yrct NASA/GSFC HEASARC Bodaghee et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source In its first 4 years of observing the sky above 20 keV, the INTEGRAL Soft Gamma-ray Imager (ISGRI) detected ~ 500 sources, around half of which were new or unknown at these energies. Follow-up observations at other wavelengths revealed that some of these sources feature unusually large column densities, long pulsations, and other interesting characteristics. The authors investigated where new and previously-known sources detected by ISGRI fit in the parameter space of high-energy objects, and they used the parameters to test correlations expected from theoretical predictions. For example, the influence of the local absorbing matter on periodic modulations was studied for Galactic High-Mass X-ray Binaries (HMXBs) with OB supergiant and Be companions. In their paper, they examined the spatial distribution of different types of sources in the Milky Way, using various projections of the Galactic plane, in order to highlight signatures of stellar evolution and to speculate on the origin of the group of sources whose classifications were still uncertain. This table contains all 499 sources detected by ISGRI listed in the reference paper, with the exception of the source 'PSR B1841-04' which was removed from the electronic version of the table by the CDS, after discussion with the author. The table contains the most precise coordinates and error radii available in the literature. Classifications are provided for all sources. When available, the published photoelectric absorption in the X-rays, distances/redshifts, and pulsation and orbital periods are also listed. This table was created by the HEASARC in April 2011 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/467/585">CDS catalog J/A+A/467/585</a> file table1.dat. This is a service provided by NASA HEASARC . 2007A&A...467..585B https://heasarc.gsfc.nasa.gov/W3Browse/all/isgri4yrct.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=isgri4yrct& GET text/xml 180 99999 true 151.075 -87.03333333 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=isgri4yrct GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_isgri4yrct&Action=More+Options&Action=Parameter+Search&ConeAdd=1 INTEGRAL 0.25 X-ray public isgri4yrct INTEGRAL ISGRI 4-Year Source Catalog 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 Position Mean Uncertainty (arcmin) arcmin stat.error;pos double nullable nh Hydrogen Column Density cm^-2 phys.columnDensity double nullable "distance" Distance (kpc) kpc pos.distance double nullable redshift Redshift src.redshift double nullable source_type Object Classification src.class char nullable redshift_pos_err Redshift: Upper Error Bar stat.error;src.redshift double nullable pulse_period_neg_err Pulse Period: Lower Error Bar s stat.error;time.period;src.var.pulse double nullable ref_position Position: Reference Bibcode meta.ref;pos char nullable class Browse Object Classification src.class short nullable redshift_neg_err Redshift: Lower Error Bar stat.error;src.redshift double nullable distance_pos_err Distance: Upper Error Bar kpc stat.error;pos.distance double nullable orbital_period Orbital Period (days) d time.period;src.orbital double nullable ref_nh Hydrogen Column Density: Reference Bibcode meta.ref;phys.columnDensity char nullable ref_redshift Redshift: Reference Bibcode meta.ref;src.redshift char nullable ref_pulse_period Pulse Period: Reference Bibcode meta.ref;time.period;src.var.pulse char nullable ref_orbital_period Orbital Period: Reference Bibcode meta.ref;time.period;src.orbital char nullable bii Galactic Latitude degree pos.galactic.lat double nullable orbital_period_pos_err Orbital Period: Upper Error Bar d stat.error;time.period;src.orbital double nullable pulse_period_pos_err Pulse Period: Upper Error Bar s stat.error;time.period;src.var.pulse double nullable pulse_period Pulse Period (s) s time.period;src.var.pulse double nullable nh_neg_err Hydrogen Column Density: Lower Error Bar cm^-2 stat.error;phys.columnDensity double nullable nh_pos_err Hydrogen Column Density: Upper Error Bar cm^-2 stat.error;phys.columnDensity double nullable ref_distance Distance: Reference Bibcode meta.ref;pos.distance char nullable lii Galactic Longitude degree pos.galactic.lon double nullable orbital_period_neg_err Orbital Period: Lower Error Bar d stat.error;time.period;src.orbital double nullable distance_neg_err Distance: Lower Error Bar kpc stat.error;pos.distance 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