EXOSAT/Slew ivo://nasa.heasarc/exms NASA/GSFC HEASARC Reynolds et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This is the first online version of the EXMS catalog. It contains information on the 1210 sources detected by EXOSAT during slew manoevers between 1983 and 1986. Each detection was obtained by searching for excesses above the background level in the light curve, fitted with the expected triangular profile due to the source passing from one side of the collimator to the other. These light curves are available for inspection from the xray account at ESTEC/ESA (telnet :://xray@exosat.estec.esa.nl). The detection time, raw 1-8 keV count rate and position (based on the centroid of the uncertainty region) are given for all 1210 entries. 80% of entries have proposed single identifications, obtained by cross-correlation of the uncertainty region against other catalogs. For these sources, the count rates are also supplied after correction for collimator efficiency, normalised to counts/sec/half, where "half" refers to one half of the ME detector array. This ensures consistency with the entries in the ME database. Coordinates of the proposed counterpart are also given, together with object type. The remaining sources consist of cases where more than one plausible candidate lay within the uncertainty region or where no candidate could be found. For these cases, only raw count rates are supplied. This database is a modified copy of the exms databases available from ESTEC/ESA. It was re-built by the HEASARC in July 1999. This is a service provided by NASA HEASARC . 1999A&AS..134..287R https://heasarc.gsfc.nasa.gov/W3Browse/all/exms.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=exms& GET text/xml 180 99999 true 248.1835 -67.079 1 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=exms GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_exms&Action=More+Options&Action=Parameter+Search&ConeAdd=1 EXOSAT 1 X-ray public exms EXOSAT ME Slew Catalog name Object Designation meta.id;meta.main char nullable "time" Detection Time mjd time.start;obs double nullable quality Quality Flag short nullable count_rate Collimator Corrected Count Rate (cts/sec/half) ct/s/half phot.count;em.X-ray.medium float nullable count_rate_error Collimator Corrected Count Rate Error ct/s/half stat.error;phot.count;em.X-ray.medium float nullable ra Centroid Right Ascension degree pos.eq.ra;meta.main double nullable dec Centroid Declination degree pos.eq.dec;meta.main double nullable type Object Type char 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 designation Catalog Designation char nullable raw_rate_error Raw Count Rate Error ct/s/half float nullable lambda Likelihood of Fit float nullable chi2 Chi-squared of Fit to Collimator Profile float nullable id_ra Object Right Ascension degree double nullable slew Slew Index Number int nullable raw_rate Raw Count Rate ct/s/half float nullable colldist Collimator Distance (arcmin) arcmin float nullable mode Quadrant Mode of Detection char nullable lii Galactic Longitude degree pos.galactic.lon double nullable id_dec Object Declination degree double nullable bii Galactic Latitude degree pos.galactic.lat double nullable time_error Detection Time Error (seconds) s stat.error;time.start;obs float nullable