M31DEEPXMM ivo://nasa.heasarc/m31deepxmm NASA/GSFC HEASARC Stiele et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The largest Local Group spiral galaxy, M 31, has been completely imaged for the first time, with an obtained luminosity lower limit ~10<sup>35</sup>erg/s in the 0.2 - 4.5 keV band. This XMM-Newton EPIC survey combines archival observations along the major axis, from June 2000 to July 2004, with observations taken between June 2006 and February 2008 that cover the remainder of the D<sub>25</sub> ellipse. The main goal of the present paper was to study the X-ray source populations of M31. An X-ray catalog of 1897 sources was created ('the XMM LP-total catalog'), with 914 sources detected for the first time. Source classification and identification were based on X-ray hardness ratios, spatial extents of the sources, and cross correlation with catalogs in the X-ray, optical, infrared and radio wavelengths. The authors also analysed the long-term variability of the X-ray sources and this variability allowed them to distinguish between X-ray binaries and active galactic nuclei (AGN). Furthermore, supernova remnant classifications of previous studies that did not use long-term variability as a classification criterion could be validated. Including previous Chandra and ROSAT observations in the long-term variability study allowed the authors to detect additional transient or at least highly variable sources, which are good candidate X-ray binaries. Fourteen of the 30 supersoft source (SSS) candidates represent supersoft emission of optical novae. Many of the 25 supernova remnants (SNRs) and 31 SNR candidates lie within the 10 kpc dust ring and other star-forming regions in M 31. This connection between SNRs and star-forming regions implies that most of the remnants originate in type II supernovae. The brightest sources in X-rays in M 31 belong to the class of X-ray binaries (XRBs). Ten low-mass XRBs (LMXBs) and 26 LMXB candidates were identified based on their temporal variability. In addition, 36 LMXBs and 17 LMXB candidates were identified owing to correlations with globular clusters and globular cluster candidates. From optical and X-ray colour-colour diagrams, possible high-mass XRB (HMXB) candidates were selected. Two of these candidates have an X-ray spectrum as expected for an HMXB containing a neutron star primary. While this survey has greatly improved our understanding of the X-ray source populations in M 31, at this point 65% of the sources can still only be classified as "hard" sources; i.e. it is not possible to decide whether these sources are X-ray binaries or Crab-like supernova remnants in M 31 or X-ray sources in the background. Deeper observations in X-ray and at other wavelengths would help to classify these sources. This table was created by the HEASARC in October 2011 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/534/A55">CDS Catalog J/A+A/534/A55</a> files table5.dat and table8.dat. This is a service provided by NASA HEASARC . 2011A&A...534A..55S https://heasarc.gsfc.nasa.gov/W3Browse/all/m31deepxmm.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=m31deepxmm& GET text/xml 180 99999 true 9.61375 39.99611111 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=m31deepxmm GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_m31deepxmm&Action=More+Options&Action=Parameter+Search&ConeAdd=1 XMM-NEWTON 0.0166666666666667 X-ray public m31deepxmm M 31 Deep XMM-Newton Survey X-Ray Source Catalog source_number Sequential Identification Number for Each Source in Catalog meta.id;src short nullable name Source Designation (XMMM31 JHHMMSS.s+DDMMSS) 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 ep_rate Combined EPIC Count Rate ct/s phot.count;em.X-ray double nullable ep_rate_error Error in Combined EPIC Count Rate ct/s stat.error;phot.count;em.X-ray double nullable ep_flux Combined EPIC Flux erg/s/cm^2 phot.flux;em.X-ray double nullable ep_flux_error Error in Combined EPIC Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable brightest_2mass_name Designation of the Brightest 2MASS Source within Search Area meta.id.assoc char nullable m1_hr2_error Error in EPIC MOS1 Hardness Ratio 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs6_error Error in EPIC Count Rate in Observation 6 ct/s stat.error;phot.count;em.X-ray double nullable lii Galactic Longitude degree pos.galactic.lon double nullable ep_flux_obs1_error Error in EPIC Flux in Observation 1 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable obs2 Observation 2 meta.code;obs char nullable ep_detect_likelihood Source Detection Likelihood (Combined EPIC) stat.likelihood;em.X-ray double nullable pn_flux EPIC pn Flux erg/s/cm^2 phot.flux;em.X-ray double nullable log_fx_fopt_usno Logarithm of FX/Fopt phot.flux;arith.ratio;em.X-ray;em.opt double nullable pn_hr4 EPIC pn Hardness Ratio 4 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs2_error Error in EPIC Hardness Ratio 2 in Observation 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable pn_hr2 EPIC pn Hardness Ratio 2 phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs5 EPIC Hardness Ratio 3 in Observation 5 phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs9 EPIC Hardness Ratio 1 in Observation 9 phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs1 EPIC Count Rate in Observation 1 ct/s phot.count;em.X-ray double nullable log_fx_fblue Logarithm of FX/Fopt (Blue) phot.flux;arith.ratio;em.X-ray;em.opt.B double nullable ep_rate_obs7 EPIC Count Rate in Observation 7 ct/s phot.count;em.X-ray double nullable pn_hr1_error Error in EPIC pn Hardness Ratio 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_error Error in Combined EPIC Hardness Ratio 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable max_flux Maximum Flux erg/s/cm^2 phot.flux;em.X-ray;stat.max double nullable max_significance_var Maximum Significance of Variation stat.likelihood;stat.max;em.X-ray double nullable ep_inst_flag_obs5 EPIC Instruments Contributing to Source Detection in Observation 5 meta.code;instr.det char nullable ep_flux_obs5_error Error in EPIC Flux in Observation 5 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable m2_hr3_error Error in EPIC MOS2 Hardness Ratio 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr1_error Error in Combined EPIC Hardness Ratio 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable obs4 Observation 4 meta.code;obs char nullable m2_hr4_error Error in EPIC MOS2 Hardness Ratio 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs4 EPIC Hardness Ratio 3 in Observation 4 phot.count;arith.ratio;em.X-ray double nullable pn_hr3_error Error in EPIC pn Hardness Ratio 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable log_fx_fred Logarithm of FX/Fopt (Red) phot.flux;arith.ratio;em.X-ray;em.opt.R double nullable ep_hr1_obs1 EPIC Hardness Ratio 1 in Observation 1 phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs3 EPIC Hardness Ratio 3 in Observation 3 phot.count;arith.ratio;em.X-ray double nullable m2_hr3 EPIC MOS2 Hardness Ratio 3 phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs7 EPIC Hardness Ratio 3 in Observation 7 phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs9 EPIC Count Rate in Observation 9 ct/s phot.count;em.X-ray double nullable ep_hr1_obs6_error Error in EPIC Hardness Ratio 1 in Observation 6 stat.error;phot.count;arith.ratio;em.X-ray double nullable usno_r2_mag R2 Magnitude of USNO-B1.0 Source mag phot.mag;em.opt.R double nullable ep_hr4 Combined EPIC Hardness Ratio 4 phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs4 EPIC Count Rate in Observation 4 ct/s phot.count;em.X-ray double nullable ep_hr2_obs5 EPIC Hardness Ratio 2 in Observation 5 phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs4 EPIC Flux in Observation 4 erg/s/cm^2 phot.flux;em.X-ray double nullable ep_hr3 Combined EPIC Hardness Ratio 3 phot.count;arith.ratio;em.X-ray double nullable xmm_usno_offset Angular Distance Between XMM Source and USNO-B1.0 Source arcsec pos.angDistance;em.X-ray;em.opt double nullable ep_hr3_obs4_error Error in EPIC Hardness Ratio 3 in Observation 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs1 EPIC Flux in Observation 1 erg/s/cm^2 phot.flux;em.X-ray double nullable ep_hr3_obs10 EPIC Hardness Ratio 3 in Observation 10 phot.count;arith.ratio;em.X-ray double nullable xray_names X-Ray Identification(s) with Variability Information meta.id.assoc char nullable ep_rate_obs7_error Error in EPIC Count Rate in Observation 7 ct/s stat.error;phot.count;em.X-ray double nullable ep_flux_obs6_error Error in EPIC Flux in Observation 6 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable lggs_vr_color V-R Color Index of LGGS Source mag phot.color;em.opt.V;em.opt.R double nullable ep_hr3_obs1 EPIC Hardness Ratio 3 in Observation 1 phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs2_error Error in EPIC Hardness Ratio 3 in Observation 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable bii Galactic Latitude degree pos.galactic.lat double nullable ep_hr2_obs9_error Error in EPIC Hardness Ratio 2 in Observation 9 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs5 EPIC Hardness Ratio 1 in Observation 5 phot.count;arith.ratio;em.X-ray double nullable obs5 Observation 5 meta.code;obs char nullable max_flux_ratio Maximum Flux Ratio phot.flux;arith.ratio;em.X-ray double nullable ep_hr3_obs5_error Error in EPIC Hardness Ratio 3 in Observation 5 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs8 EPIC Hardness Ratio 1 in Observation 8 phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs8 EPIC Flux in Observation 8 erg/s/cm^2 phot.flux;em.X-ray double nullable xmm_lggs_offset Angular Distance Between XMM Source and LGGS Source arcsec pos.angDistance;em.X-ray;em.opt double nullable ep_flux_obs8_error Error in EPIC Flux in Observation 8 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable ep_hr4_obs2_error Error in EPIC Hardness Ratio 4 in Observation 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable remarks Additional Remarks meta.note char nullable ep_inst_flag_obs6 EPIC Instruments Contributing to Source Detection in Observation 6 meta.code;instr.det char nullable ep_inst_flag_obs4 EPIC Instruments Contributing to Source Detection in Observation 4 meta.code;instr.det char nullable ep_hr4_obs5_error Error in EPIC Hardness Ratio 4 in Observation 5 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs9_error Error in EPIC Flux in Observation 9 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable ep_rate_obs4_error Error in EPIC Count Rate in Observation 4 ct/s stat.error;phot.count;em.X-ray double nullable ep_inst_flag_obs3 EPIC Instruments Contributing to Source Detection in Observation 3 meta.code;instr.det char nullable ep_rate_obs9_error Error in EPIC Count Rate in Observation 9 ct/s stat.error;phot.count;em.X-ray double nullable ep_inst_flag_obs7 EPIC Instruments Contributing to Source Detection in Observation 7 meta.code;instr.det char nullable ep_hr1_obs5_error Error in EPIC Hardness Ratio 1 in Observation 5 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs6_error Error in EPIC Hardness Ratio 3 in Observation 6 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs2 EPIC Hardness Ratio 3 in Observation 2 phot.count;arith.ratio;em.X-ray double nullable ep_hr4_obs1_error Error in EPIC Hardness Ratio 4 in Observation 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable source_type Classification of X-Ray Source src.class char nullable ep_hr1_obs3 EPIC Hardness Ratio 1 in Observation 3 phot.count;arith.ratio;em.X-ray double nullable m2_detect_likelihood EPIC MOS2 Source Detection Likelihood stat.likelihood;em.X-ray double nullable ep_flux_obs4_error Error in EPIC Flux in Observation 4 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable m1_rate EPIC MOS1 Count Rate ct/s phot.count;em.X-ray double nullable m31_field_id M 31 Field Identification meta.id;obs.field char nullable ep_hr4_obs4 EPIC Hardness Ratio 4 in Observation 4 phot.count;arith.ratio;em.X-ray double nullable obs1 Observation 1 meta.code;obs char nullable pn_exposure Exposure of EPIC pn Instrument s time.duration;obs.exposure double nullable ep_rate_obs10_error Error in EPIC Count Rate in Observation 10 ct/s stat.error;phot.count;em.X-ray double nullable ep_hr1_obs2 EPIC Hardness Ratio 1 in Observation 2 phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs7_error Error in EPIC Hardness Ratio 1 in Observation 7 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs5 EPIC Flux in Observation 5 erg/s/cm^2 phot.flux;em.X-ray double nullable pn_rate EPIC pn Count Rate ct/s phot.count;em.X-ray double nullable m2_flux EPIC MOS2 Flux erg/s/cm^2 phot.flux;em.X-ray double nullable m1_flux EPIC MOS1 Flux erg/s/cm^2 phot.flux;em.X-ray double nullable ep_hr2_obs1_error Error in EPIC Hardness Ratio 2 in observation 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr4_obs7 EPIC Hardness Ratio 4 in Observation 7 phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs5 EPIC Count Rate in Observation 5 ct/s phot.count;em.X-ray double nullable ep_hr4_obs5 EPIC Hardness Ratio 4 in Observation 5 phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs5_error Error in EPIC Count Rate in Observation 5 ct/s stat.error;phot.count;em.X-ray double nullable m2_rate_error Error in EPIC MOS2 Count Rate ct/s stat.error;phot.count;em.X-ray double nullable ep_hr4_obs4_error Error in EPIC Hardness Ratio 4 in Observation 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs2 EPIC Count Rate in Observation 2 ct/s phot.count;em.X-ray double nullable m1_hr3 EPIC MOS1 Hardness Ratio 3 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs8 EPIC Hardness Ratio 2 in Observation 8 phot.count;arith.ratio;em.X-ray double nullable ep_inst_flag_obs2 EPIC Instruments Contributing to Source Detection in Observation 2 meta.code;instr.det char nullable ep_hr1_obs8_error Error in EPIC Hardness Ratio 1 in Observation 8 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs4_error Error in EPIC Hardness Ratio 1 in Observation 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs3_error Error in EPIC Hardness Ratio 2 in Observation 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable pn_hr3 EPIC pn Hardness Ratio 3 phot.count;arith.ratio;em.X-ray double nullable obs9 Observation 9 meta.code;obs char nullable ep_hr1_obs9_error Error in EPIC Hardness Ratio 1 in Observation 9 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_inst_flag_obs1 EPIC Instruments Contributing to Source Detection in Observation 1 meta.code;instr.det char nullable ep_hr3_obs6 EPIC Hardness Ratio 3 in Observation 6 phot.count;arith.ratio;em.X-ray double nullable m1_hr1 EPIC MOS1 Hardness Ratio 1 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_error Error in Combined EPIC Hardness Ratio 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable m1_hr2 EPIC MOS1 Hardness Ratio 2 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs8_error Error in EPIC Hardness Ratio 2 in Observation 8 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_inst_flag_obs8 EPIC Instruments Contributing to Source Detection in Observation 8 meta.code;instr.det char nullable xmm_2mass_offset Angular Distance Between XMM Source and 2MASS Source arcsec pos.angDistance;em.X-ray;em.IR double nullable ep_rate_obs6 EPIC Count Rate in Observation 6 ct/s phot.count;em.X-ray double nullable ep_inst_flag EPIC Instruments Contributing to Source Detection meta.code;instr.det char nullable ep_hr4_obs8 EPIC Hardness Ratio 4 in Observation 8 phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs3_error Error in EPIC Hardness Ratio 1 in Observation 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable brightest_lggs_name Designation of the Brightest LGGS Source within Search Area meta.id.assoc char nullable obs7 Observation 7 meta.code;obs char nullable ep_hr1_obs1_error Error in EPIC Hardness Ratio 1 in Observation 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable pn_hr4_error Error in EPIC pn Hardness Ratio 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs10_error Error in EPIC Hardness Ratio 3 in Observation 10 stat.error;phot.count;arith.ratio;em.X-ray double nullable usno_b2_mag B2 Magnitude of USNO-B1.0 Source mag phot.mag;em.opt.B double nullable ep_hr3_obs7_error Error in EPIC Hardness Ratio 3 in Observation 7 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs10 EPIC Flux in Observation 10 erg/s/cm^2 phot.flux;em.X-ray double nullable ep_hr3_obs9 EPIC Hardness Ratio 3 in Observation 9 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs7_error Error in EPIC Hardness Ratio 2 in Observation 7 stat.error;phot.count;arith.ratio;em.X-ray double nullable m1_hr4 EPIC MOS1 Hardness Ratio 4 phot.count;arith.ratio;em.X-ray double nullable ep_hr4_obs6 EPIC Hardness Ratio 4 in Observation 6 phot.count;arith.ratio;em.X-ray double nullable pn_rate_error Error in EPIC pn Count Rate ct/s stat.error;phot.count;em.X-ray double nullable ep_flux_obs3 EPIC Flux in Observation 3 erg/s/cm^2 phot.flux;em.X-ray double nullable ep_hr4_obs10 EPIC Hardness Ratio 4 in Observation 10 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs9 EPIC Hardness Ratio 2 in Observation 9 phot.count;arith.ratio;em.X-ray double nullable num_2mass_correlations Number of 2MASS Correlations meta.number short nullable ep_flux_obs6 EPIC Flux in Observation 6 erg/s/cm^2 phot.flux;em.X-ray double nullable brightest_usno_name Designation of the Brightest USNO-B1.0 Source within Search Area meta.id.assoc char nullable ep_hr2 Combined EPIC Hardness Ratio 2 phot.count;arith.ratio;em.X-ray double nullable pn_hr1 EPIC pn Hardness Ratio 1 phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs2_error Error in EPIC Flux in Observation 2 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable m2_hr2 EPIC MOS2 Hardness Ratio 2 phot.count;arith.ratio;em.X-ray double nullable ep_hr4_obs10_error Error in EPIC Hardness Ratio 4 in Observation 10 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs3_error Error in EPIC Count Rate in Observation 3 ct/s stat.error;phot.count;em.X-ray double nullable obs3 Observation 3 meta.code;obs char nullable m1_rate_error Error in EPIC MOS1 Count Rate ct/s stat.error;phot.count;em.X-ray double nullable ep_flux_obs10_error Error in EPIC Flux in Observation 10 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable ep_hr4_obs3_error Error in EPIC Hardness Ratio 4 in Observation 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable class Browse Object Classification src.class short nullable m2_hr2_error Error in EPIC MOS2 Hardness Ratio 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs8_error Error in EPIC Hardness Ratio 3 in Observation 8 stat.error;phot.count;arith.ratio;em.X-ray double nullable obs6 Observation 6 meta.code;obs char nullable log_fx_fopt_lggs Logarithm of FX/Fopt (LGGS) phot.flux;arith.ratio;em.X-ray;em.opt double nullable m2_exposure Exposure of EPIC MOS2 Instrument s time.duration;obs.exposure double nullable ep_hr4_error Error in Combined EPIC Hardness Ratio 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable m1_flux_error Error in EPIC MOS1 Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable ep_hr4_obs9_error Error in EPIC Hardness Ratio 4 in Observation 9 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_inst_flag_obs9 EPIC Instruments Contributing to Source Detection in Observation 9 meta.code;instr.det char nullable ep_inst_flag_obs10 EPIC Instruments Contributing to Source Detection in Observation 10 meta.code;instr.det char nullable pn_detect_likelihood EPIC pn Source Detection Likelihood stat.likelihood;em.X-ray double nullable ep_hr2_obs10_error Error in EPIC Hardness Ratio 2 in Observation 10 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs2 EPIC Hardness Ratio 2 in Observation 2 phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs6 EPIC Hardness Ratio 1 in Observation 6 phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs2 EPIC Flux in Observation 2 erg/s/cm^2 phot.flux;em.X-ray double nullable m2_hr4 EPIC MOS2 Hardness Ratio 4 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs7 EPIC Hardness Ratio 2 in Observation 7 phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs3 EPIC Hardness Ratio 2 in Observation 3 phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs3 EPIC Count Rate in Observation 3 ct/s phot.count;em.X-ray double nullable ep_hr4_obs9 EPIC Hardness Ratio 4 in Observation 9 phot.count;arith.ratio;em.X-ray double nullable error_radius Positional Uncertainty (arcsec) arcsec stat.error;pos double nullable ep_flux_obs7 EPIC Flux in Observation 7 erg/s/cm^2 phot.flux;em.X-ray double nullable obs10 Observation 10 meta.code;obs char nullable ep_hr4_obs3 EPIC Hardness Ratio 4 in Observation 3 phot.count;arith.ratio;em.X-ray double nullable m1_hr3_error Error in EPIC MOS1 Hardness Ratio 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs2_error Error in EPIC Count Rate in Observation 2 ct/s stat.error;phot.count;em.X-ray double nullable ep_hr4_obs6_error Error in EPIC Hardness Ratio 4 in Observation 6 stat.error;phot.count;arith.ratio;em.X-ray double nullable pn_hr2_error Error in EPIC pn Hardness Ratio 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable num_detections Number of Observations Covering the Source meta.number short nullable ep_hr1 Combined EPIC Hardness Ratio 1 phot.count;arith.ratio;em.X-ray double nullable pn_flux_error Error in EPIC pn Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable ep_hr2_obs10 EPIC Hardness Ratio 2 in Observation 10 phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs7 EPIC Hardness Ratio 1 in Observation 7 phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs8_error Error in EPIC Count Rate in Observation 8 ct/s stat.error;phot.count;em.X-ray double nullable m1_detect_likelihood EPIC MOS1 Source Detection Likelihood stat.likelihood;em.X-ray double nullable ep_rate_obs8 EPIC Count Rate in Observation 8 ct/s phot.count;em.X-ray double nullable ep_hr1_obs10_error Error in EPIC Hardness Ratio 1 in Observation 10 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs1_error Error in EPIC Hardness Ratio 3 in Observation 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable m1_hr1_error Error in EPIC MOS1 Hardness Ratio 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs10 EPIC Count Rate in Observation 10 ct/s phot.count;em.X-ray double nullable ep_hr4_obs8_error Error in EPIC Hardness Ratio 4 in Observation 8 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs3_error Error in EPIC Flux in Observation 3 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable ep_hr2_obs4 EPIC Hardness Ratio 2 in Observation 4 phot.count;arith.ratio;em.X-ray double nullable num_lggs_correlations Number of LGGS Correlations meta.number short nullable ep_hr4_obs1 EPIC Hardness Ratio 4 in Observation 1 phot.count;arith.ratio;em.X-ray double nullable m2_hr1 EPIC MOS2 Hardness Ratio 1 phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs9 EPIC Flux in Observation 9 erg/s/cm^2 phot.flux;em.X-ray double nullable ep_hr4_obs7_error Error in EPIC Hardness Ratio 4 in Observation 7 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs5_error Error in EPIC Hardness Ratio 2 in Observation 5 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_rate_obs1_error Error in EPIC Count Rate in Observation 1 ct/s stat.error;phot.count;em.X-ray double nullable ep_hr2_obs6 EPIC Hardness Ratio 2 in Observation 6 phot.count;arith.ratio;em.X-ray double nullable ep_flux_obs7_error Error in EPIC Flux in Observation 7 erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable m2_flux_error Error in EPIC MOS2 Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray double nullable m2_rate EPIC MOS2 Count Rate ct/s phot.count;em.X-ray double nullable ep_hr2_obs4_error Error in EPIC Hardness Ratio 2 in Observation 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable lggs_bv_color B-V Color Index of LGGS Source mag phot.color;em.opt.B;em.opt.V double nullable ep_hr4_obs2 EPIC Hardness Ratio 4 in Observation 2 phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs10 EPIC Hardness Ratio 1 in Observation 10 phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs8 EPIC Hardness Ratio 3 in Observation 8 phot.count;arith.ratio;em.X-ray double nullable ep_hr1_obs4 EPIC Hardness Ratio 1 in Observation 4 phot.count;arith.ratio;em.X-ray double nullable lggs_vmag V Magnitude of LGGS Source mag phot.mag;em.opt.V double nullable ep_hr3_obs9_error Error in EPIC Hardness Ratio 3 in Observation 9 stat.error;phot.count;arith.ratio;em.X-ray double nullable num_upper_limits Number of Upper Limits meta.number short nullable m1_hr4_error Error in EPIC MOS1 Hardness Ratio 4 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr3_obs3_error Error in EPIC Hardness Ratio 3 in Observation 3 stat.error;phot.count;arith.ratio;em.X-ray double nullable num_usno_correlations Number of USNO-B1.0 Correlations meta.number short nullable m2_hr1_error Error in EPIC MOS2 Hardness Ratio 1 stat.error;phot.count;arith.ratio;em.X-ray double nullable ep_hr2_obs1 EPIC Hardness Ratio 2 in Observation 1 phot.count;arith.ratio;em.X-ray double nullable max_flux_error Error in Maximum Flux erg/s/cm^2 stat.error;phot.flux;em.X-ray;stat.max double nullable ep_hr1_obs2_error Error in EPIC Hardness Ratio 1 in Observation 2 stat.error;phot.count;arith.ratio;em.X-ray double nullable obs8 Observation 8 meta.code;obs char nullable m1_exposure Exposure of EPIC MOS1 Instrument s time.duration;obs.exposure double nullable ep_hr2_obs6_error Error in EPIC Hardness Ratio 2 in Observation 6 stat.error;phot.count;arith.ratio;em.X-ray double nullable usno_imag I Magnitude of USNO-B1.0 Source mag phot.mag;em.opt.I 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