PSPC/SMC2 ivo://nasa.heasarc/smcrosxry2 NASA/GSFC HEASARC Haberl, Filipovic, Pitecsh, Kahabka 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This is a catalogue of 517 discrete X-ray sources in a 6 degree by 6 degree field covering the Small Magellanic Cloud (SMC). The catalogue was derived from the pointed ROSAT PSPC observations performed between October 1991 and May 1994 and is complementary to the Large Magellanic Cloud (LMC) catalogue published by Haberl & Pietsch (1999, A&AS, 139, 277). The authors followed the same identification scheme and used, among other information, X-ray hardness ratios and spatial extent to classify unknown sources as candidates for active galactic nuclei (AGN), foreground stars, supernova remnants (SNRs), supersoft sources (SSSs) and X-ray binaries. In Table 7 of the paper from which this catalog is taken (Haberl et al. 2000, A&AS, 142, 41), for 158 of these 517 sources a likely source type is given, from which 46 sources are suggested as background AGN (including candidates resulting from a comparison of X-ray and radio images). Nearly all of the X-ray binaries known in the SMC were detected in the ROSAT PSPC observations; most of them with luminosities below 10<sup>36</sup> erg/s, suggesting that the fraction of high-luminosity X-ray binary systems in the Magellanic Clouds (MCs) is not significantly larger than in our galaxy. This database was created at the HEASARC in June 2000 based on the ADC/<a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+AS/142/41">CDS Catalog J/A+AS/142/41</a>, and is derived from Table 2 of the reference. This is a service provided by NASA HEASARC . 2000A&AS..142...41H https://heasarc.gsfc.nasa.gov/W3Browse/all/smcrosxry2.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=smcrosxry2& GET text/xml 180 99999 true 19.41625 -75.96972222 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=smcrosxry2 GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_smcrosxry2&Action=More+Options&Action=Parameter+Search&ConeAdd=1 ROSAT 0.0166666666666667 X-ray public smcrosxry2 ROSAT PSPC Catalog of SMC X-Ray Sources (Haberl et al.) name Object 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 count_rate PSPC 0.1-2.4 keV Count Rate ct/s phot.count;em.X-ray.soft double nullable count_rate_error Count Rate Error ct/s stat.error;phot.count;em.X-ray.soft double nullable error_radius X-ray Positional Error Radius arcsec stat.error;pos 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 remarks Remarks char nullable bii Galactic Latitude degree pos.galactic.lat double nullable source_extent Source Extent arcsec double nullable extent_likelihood Likelihood for the Extent double nullable ror ROSAT Observation Identifier char nullable ribdist Distance to Detector Window Support Structure or Detector Rim (units FWHM) FWHM double nullable hardness_ratio_1_error Error in Hardness Ratio 1 stat.error;phot.flux;arith.ratio double nullable hardness_ratio_2 Hardness Ratio 2 phot.flux;arith.ratio;em.X-ray.soft double nullable hardness_ratio_1 Hardness Ratio 1 phot.flux;arith.ratio;em.X-ray.soft double nullable lii Galactic Longitude degree pos.galactic.lon double nullable kpf99 Number of Nearest Source in Kahabka et al., 1999 (Cat. J/A+AS/136/81) short nullable detect_likelihood Likelihood of Existence double nullable hardness_ratio_2_error Error in Hardness Ratio 2 stat.error;phot.flux;arith.ratio double nullable offaxis Off-Axis Angle arcmin short nullable exposure Corrected Net Exposure Time s time.duration;obs.exposure int nullable