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Home All issues Volume 501 / No 1 (July I 2009) A&A, 501 1 (2009) 103-118 Full HTML
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Table 5:

Main characteristics of the 39 brightest sources. The sources are sorted by decreasing count number.
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
SRC NAME cts Model $N_{\rm H}$ $\Gamma$/kT $\chi_{\nu}^{2}$ $D_{\rm XO}$ MAG OPTICAL $\frac{f_{\rm X}}{f_{\rm opt}}$ OPTICAL X-RAY SOURCE
        (1021 cm-2) (-/keV)   (arcsec) (mag) FILTER (log10) COUNTERPART CLASS CLASS
520 XMMU J121101.5-523030 6464 wabs(pow) $\rm 2.2^{+0.4}_{-0.3}$ $\rm 1.97^{+0.12}_{-0.11}$ 1.07 2.71 19.68 R 0.39 - AGNa
338 XMMU J120942.1-522458 5611 wabs(pow) $\rm 1.1^{+0.3}_{-0.3}$ $\rm 1.98^{+0.12}_{-0.11}$ 1.15 2.99 19.43 R 0.15 QSO AGN
241 XMMU J120858.8-522129 3829 wabs(mekal) $\rm 1.4^{+0.6}_{-0.6}$ $\rm0.62^{+0.02}_{-0.02}$ 1.63 3.07 13.71 V -2.11 - STARa,c
508 XMMU J120857.1-523014 2287 wabs(brem) $\rm 2.9^{+0.9}_{-0.8}$ $\rm0.28^{+0.70}_{-0.54}$ 1.81 3.14 16.25 R -1.55 - STARa,c
      wabs(bbody) $\rm 1.0^{+0.9}_{-0.6}$ $\rm0.17^{+0.02}_{-0.02}$ 1.72            
480 XMMU J120908.1-522918 2146 wabs(pow) $\rm 1.2^{+0.5}_{-0.5}$ $\rm 1.92^{+0.19}_{-0.16}$ 0.90 2.42 19.36 R -0.06 QSO AGN
198 XMMU J120841.6-522026 1976 wabs(pow) $\rm0.1^{+0.02}_{-0.04}$ $\rm 1.85^{+0.22}_{-0.19}$ 0.95 3.38 20.14 R 0.46 QSO AGNb
              3.28 21.71 R 1.10 MS M3-M4  
674 XMMU J121007.2-523555 1631 wabs(pow) $\rm0.8^{+0.5}_{-0.5}$ $\rm 1.71^{+0.14}_{-0.17}$ 1.13 1.83 19.26 R -0.39 QSO AGNb
244 XMMU J120842.5-522128 1603 wabs(pow) <0.08 $\rm 1.66^{+0.20}_{-0.22}$ 0.82 3.70 21.97 V 1.22 - AGNa,b
              3.33 21.02 R 0.75 MS A7-WD  
357 XMMU J121113.8-522532 1488 wabs(brem) $\rm 4.4^{+1.8}_{-1.5}$ $\rm0.26^{+0.10}_{-0.10}$ 1.73 - - - - - unclc
      wabs(bbody) $\rm 2.5^{+1.9}_{-1.4}$ $\rm0.16^{+0.03}_{-0.03}$ 1.75 - - - - - (see note 7)
471 XMMU J121057.3-522905 1353 wabs(pow) $\rm 9.4^{+0.4}_{-2.8}$ $\rm 2.12^{+0.32}_{-0.33}$ 1.48 3.92 20.11 R -0.10 - AGNa
      wabs(mekal) $\rm 8.9^{+3.4}_{-2.8}$ $\rm 3.63^{+2.06}_{-1.06}$ 1.42 3.60 20.42 R 0.03 -  
      wabs(brem) $\rm 7.6^{+2.8}_{-2.0}$ $\rm 4.27^{+3.28}_{-1.53}$ 1.48         -  
509 XMMU J120913.8-523023 1319 wabs(pow) $\rm0.9^{+0.5}_{-0.5}$ $\rm 1.97^{+0.17}_{-0.21}$ 0.89 2.67 20.11 R 0.00 WD AGNb,c
      wabs(brem) $\rm0.3^{+0.4}_{-0.0}$ $\rm 4.27^{+2.57}_{-1.24}$ 0.96            
426 XMMU J121000.0-522747 1271 wabs(pow) $\rm0.1^{+0.6}_{-0.0}$ $\rm 1.64^{+0.16}_{-0.18}$ 2.15 3.66 15.84 R -1.92 Sbc-vB2 unclc
340 XMMU J120951.1-522525 1131 wabs(pow) $\rm0.4^{+0.7}_{-0.0}$ $\rm 1.79^{+0.21}_{-0.28}$ 0.87 - >23.97 R >1.24 - AGNa,b
      wabs(brem) <0.4 $\rm 5.34^{+4.37}_{-2.10}$ 0.93 -       -  
598 XMMU J120927.4-523326 1128 wabs(pow) $\rm0.9^{+0.6}_{-0.5}$ $\rm 2.07^{+0.16}_{-0.21}$ 0.92 3.81 20.17 V 0.00 - AGNa,b
404 XMMU J121017.5-522706 1119 wabs(mekal) $\rm 5.3^{+1.1}_{-1.2}$ $\rm0.63^{+0.06}_{-0.06}$ 1.39 3.46 15.47 R -2.51 MS K3-K2 STARb
158 XMMU J121018.4-521911 1090 wabs(brem) $\rm 2.8^{+1.5}_{-1.2}$ $\rm0.28^{+0.11}_{-0.08}$ 1.38 4.04 16.49 R -1.82 MS M3 STARb
490 XMMU J120935.6-522940 1058 wabs(pow) $\rm 4.5^{+2.6}_{-1.5}$ $\rm 2.46^{+0.64}_{-0.45}$ 1.09 3.00 22.33 R 0.33 QSO AGN
      wabs(brem) $\rm 3.0^{+1.9}_{-1.3}$ $\rm 2.46^{+1.93}_{-0.84}$ 1.10         -  
      wabs(bbody) $\rm0.2^{+1.9}_{-0.0}$ $\rm0.57^{+0.09}_{-0.09}$ 1.29         -  
216 XMMU J120955.1-522105 1033 wabs(pow) $\rm 1.5^{+0.8}_{-0.9}$ $\rm 2.06^{+0.37}_{-0.29}$ 1.25 3.39 18.74 R -0.78 QSO AGN
              3.58 22.27 R 0.63 MS M2  
585 XMMU J120906.9-523310 980 wabs(pow) $\rm 1.8^{+0.8}_{-0.8}$ $\rm 1.96^{+0.21}_{-0.25}$ 1.01 3.79 21.76 R 0.58 QSO AGN
      wabs(brem) $\rm 1.0^{+0.8}_{-0.5}$ $\rm 4.46^{+3.58}_{-1.48}$ 1.05 2.53 19.51 R -0.32 QSO  
141 XMMU J120945.2-521828 959 wabs(pow) $\rm0.1^{+0.5}_{-0.0}$ $\rm 1.48^{+0.28}_{-0.18}$ 1.38 3.46 21.05 R 0.44 QSO AGNb
688 XMMU J120959.0-523618 946 wabs(pow) $\rm 2.3^{+1.0}_{-0.9}$ $\rm 1.94^{+0.22}_{-0.29}$ 0.80 2.18 22.00 V 0.57 - AGNa
      wabs(brem) $\rm 1.5^{+1.0}_{-0.6}$ $\rm 4.69^{+4.41}_{-1.58}$ 0.81 3.63 22.53 V 0.79 -  
654 XMMU J120936.5-523515 888 wabs(pow) $\rm 1.3^{+0.1}_{-0.0}$ $\rm 2.08^{+0.69}_{-0.55}$ 1.63 3.38 22.66 R 0.89 - AGNa
              1.51 22.88 R 0.98 -  
433 XMMU J120850.5-522738 818 wabs(brem) $\rm 2.2^{+0.2}_{-0.1}$ $\rm0.47^{+0.21}_{-0.17}$ 1.69 2.27 16.63 R -1.77 MS K5-M0 STARb
214 XMMU J121040.9-522055 785 wabs(pow) <0.3 $\rm 1.92^{+0.24}_{-0.21}$ 1.76 - >23.97 R >1.39 - AGNa,b
363 XMMU J121039.9-522538 773 wabs(mekal) $\rm 1.7^{+1.1}_{-1.4}$ $\rm0.53^{+0.10}_{-0.06}$ 2.70 3.06 14.22 R -2.74 - STARa,b
304 XMMU J121052.9-522354 699 wabs(pow) $\rm 2.4^{+2.6}_{-1.4}$ $\rm 1.56^{+0.38}_{-0.28}$ 1.41 - >23.97 R >1.52 - AGNa
326 XMMU J121034.6-522457 694 wabs(pow) $\rm 7.8^{+5.0}_{-3.7}$ $\rm 1.30^{+0.30}_{-0.31}$ 1.31 - >23.97 R >1.44 - AGNa
      wabs(bbody) $\rm0.9^{+0.3}_{-0.0}$ $\rm 1.26^{+0.24}_{-0.18}$ 1.33 - >23.97 R >1.40 -  
372 XMMU J120950.5-522613 618 wabs(bbody) <0.05 $\rm0.25^{+0.03}_{-0.03}$ 1.26 5.43 20.57 R -0.55 MS K4 STARd
      wabs(brem) <0.05 $\rm0.73^{+0.27}_{-0.24}$ 1.13 2.59 23.86 U 0.82 -  
386 XMMU J121043.1-522638 605 ? - - - 2.41 18.47 R -0.96 - uncl
236 XMMU J120904.8-522129 551 wabs(pow) $\rm 2.2^{+1.7}_{-1.6}$ $\rm 1.89^{+0.66}_{-0.28}$ 0.94 3.50 22.42 R 0.65 - AGNa
      wabs(bbody) <0.9 $\rm0.61^{+0.13}_{-0.11}$ 1.21            
222 XMMUJ121006.3-522122 540 wabs(pow) $\rm0.5^{+1.5}_{-0.0}$ $\rm 2.38^{+0.93}_{-0.51}$ 1.06 3.36 20.44 R -0.50 QSO AGNb
      wabs(brem) <0.7 $\rm 1.70^{+1.30}_{-0.73}$ 1.04 2.18 19.76 R -0.77 QSO  
204 XMMU J120934.1-522034 535 wabs(brem) $\rm 6.4^{+5.6}_{-3.1}$ $\rm 4.35^{+8.50}_{-2.53}$ 1.56 3.48 21.39 R 0.21 MS F5 unclc
      wabs(pow) $\rm 8.9^{+0.8}_{-4.6}$ $\rm 2.18^{+1.02}_{-0.37}$ 1.53       0.23 -  
      wabs(bbody) $\rm0.7^{+4.7}_{-0.0}$ $\rm0.77^{+0.18}_{-0.19}$ 1.72       0.14 -  
410 XMMU J120921.0-522700 535 wabs(pow) $\rm 4.6^{+0.5}_{-0.3}$ $\rm 2.15^{+0.58}_{-0.69}$ 1.54 - >23.97 R >0.88 - AGNa,d
      wabs(bbody) $\rm0.2^{+0.3}_{-0.0}$ $\rm0.65^{+0.18}_{-0.18}$ 1.75 -       -  
121 XMMU J120901.3-521741 533 ? - - - 3.75 21.87 R 0.49 QSO uncl
106 XMMU J120955.3-521716 522 wabs(pow) $\rm 4.8^{+0.4}_{-2.4}$ $\rm 1.73^{+0.57}_{-0.41}$ 1.16 2.95 19.96 R -0.18 QSO AGN
              2.13 23.53 R 1.24 -  
263 XMMU J120928.2-522225 515 ? - - - 0.86 22.46 R 0.49 - uncl
      ?       2.19 22.51 R 0.51 QSO  
      ?       3.93 22.09 R 0.34 MS M2.5  
      ?       3.04 22.14 R 0.36 MS K7-K5  
64 XMMU J120958.7-521449 512 wabs(pow) $\rm0.2^{+0.1}_{-0.2}$ $\rm 1.84^{+0.79}_{-0.46}$ 1.25 1.72 23.46 R 1.26 - AGNa,b
517 XMMU J121031.9-523046 508 wabs(pow) $\rm 1.7^{+0.4}_{-0.0}$ $\rm 1.78^{+0.86}_{-0.58}$ 0.77 - >23.97 R >0.73 - AGNa
      wabs(bbody) <1.6 $\rm0.63^{+0.18}_{-0.14}$ 0.98 -          
533 XMMU J121013.2-523123 499 wabs(pow) $\rm 3.4^{+0.3}_{-0.2}$ $\rm 2.05^{+0.30}_{-0.44}$ 1.43 3.65 20.66 U -0.18 - AGNa
      wabs(bbody) <1.4 $\rm0.65^{+0.11}_{-0.10}$ 1.63 3.28 16.18 R -2.25 -  
Key to table - Col. (1): source ID number. Column (2) catalogue name. Column (3): source total counts (in the 0.3-8 keV energy range). Column (4): best-fit emission model(s); the symbol ``uncl'' indicates that none of the tested single-component models provided an acceptable fit. Column (5): best-fit hydrogen column density with the associated 90% confidence errors. Column (6): best-fit photon-index or plasma temperature (for a power-law or a thermal emission model, respectively) with the associated relevant 90% confidence level error. Column (7): best-fit reduced chi-square. Column (8): angular distance between the X-ray source position and its optical candidate counterpart (if any). The most likely optical counterpart are listed first. Column (9): magnitude of the optical candidate counterpart or $R \ge 23.97$ upper limit if no candidate counterpart is found. Column (10): optical filter; if the optical candidate counterpart has no R-band magnitude we considered the V, B, I and U-band magnitudes in this order. Column (11): logarithmic values of the X-ray-to-optical flux ratio; the optical flux is based on the magnitudes in Col. (9) while the X-ray flux is based on the best-fit model or, when no model is acceptable, on a power-law spectrum with photon-index $\Gamma$ = 1.7 and hydrogen column density $N_{\rm H}=1.3$ $\times $ 1021 cm-2, corresponding to the total galactic column density. Column (12): suggested classification of the optical candidate counterpart from the WFI catalogue. MS indicates a main sequence star, QSO indicates a quasar, WD indicates a white dwarf, Sbc and vB2 indicate a spiral galaxy and a blue compact galaxy respectively. Column (13): proposed source classification of X-ray source with warning flags: a the source classification is likely but not secured by the identification of its optical counterpart: the candidate optical counterpart is unclassified, or poorly classified, or undetected; b the source classification is uncertain because the best-fit $N_{\rm H}$ value is too low for AGNs and too high for stars; c the X-ray spectrum is not in agreement either with the magnitude or with the colour-based classification of the candidate optical counterparts; d the source X-ray spectrum is not unambigously determined, and/or the spectral parameters have large errors.

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