J/A+A/704/A235 M31 XMM-Newton AstroSat UVIT source catalogue (Stiele+, 2025)
AstroSat UVIT counterparts of XMM-Newton X-ray sources in M 31.
Stiele H., Kong A.K.H.
<Astron. Astrophys. 704, A235 (2025)>
=2025A&A...704A.235S 2025A&A...704A.235S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; X-ray sources ; Spectra, ultraviolet
Keywords: galaxies: individual: M 31 - ultraviolet: galaxies - X-rays: galaxies
Abstract:
The X-ray source population of M 31 has been studied intensively with
many different X-ray telescopes, including "The Deep XMM-Newton survey
of M 31" that covered the entire D25 ellipse down to a limiting
luminosity of ∼1035erg/s in the 0.2-4.5keV band.
In this study we tried to identify UV counterparts of the X-ray
sources seen with XMM-Newton using the M 31 UVIT catalogue that is
based on AstroSat observations.
We studied the UV colour-colour diagram of the counterparts and we
also fitted the UV spectra with simple phenomenological models that
give formally acceptable fits for about 35 per cent of the sources.
Our investigation is complimented by an analysis of the X-ray spectral
properties and their temporal evolution based on the X-ray spectral
fits of the XMM2Athena project. We updated the classification of
XMM-Newton sources with UVIT counterparts, if needed, by checking
cross-correlations with more recent studies.
In the UV colour-colour diagram, we found one source that is
classified as "hard" in a region where apart from this source only
foreground stars are located. Apart from foreground stars (23) and
"hard" sources (13), sources located in globular clusters (6) are
most numerous among the sources with UV counterpart that give a
statistically acceptable fit with our simple models. We used the UVIT
data together with XMM-Newton optical monitor data to investigate
spectral energy distributions of the sources. This allowed us to
suggest classifications for sources that were just classified as
"hard" sources in previous studies. We updated the classification
of 24 out of the 291 XMM-Newton source with UVIT counterparts. The
list thus contains (including candidates of each class): 105
foreground stars, 22 globular clusters, 11 supernova remnants, nine
X-ray binaries, of which six are suggested as high-mass X-ray binary
candidates, eight galaxies, eight AGN, seven supersoft source
candidates, two sources that are either an X-ray binary or a galaxy
and another one that is either a galaxy or a globular cluster. 107
sources can still only be classified as "hard", while nine remain
without any classification.
Description:
Photometric and spectral parameters for 291 AstroSat/UVIT counterparts
of XMM-Newton sources in M 31. Provided are photometric parameters in
the six AstroSat/UVIT bands, in the six XMM-Newton/OM filters, in the
GALEX bands, and in five XMM-Newton/EPIC X-ray bands. In addition,
spectral parameters in the UVIT and X-ray bands, as well as from an
SED fitting with VOSA are provided.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 1975 325 Source catalogue
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See also:
II/340 : XMM-OM Serendipitous Source Survey Catalogue (XMM-SUSS2.1)
(Page+ 2014)
IX/69 : XMM-Newton Serendipitous Source Catalogue 4XMM-DR13
(Webb+, 2023)
II/378 : XMM-OM Serendipitous Source Survey Catalogue (XMM-SUSS6.0)
(Page+, 2023)
J/A+A/534/A55 : Deep XMM-Newton Survey of M31 (Stiele+, 2011)
J/ApJS/199/37 : GALEX catalog of star clusters in M31 (Kang+, 2012)
J/ApJS/247/47 : Ultraviolet survey of M31 with UVIT on AstroSat (Leahy+, 2020)
J/A+A/704/A16 : Harnessing the XMM-Newton data (Viitanen+, 2025)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- SPH2011 X-ray source identifier (SPH2011) (1)
6- 7 I2 h RAh Right Ascension (J2000) (RAh)
9- 10 I2 min RAm Right Ascension (J2000) (RAm)
12- 16 F5.2 s RAs Right Ascension (J2000) (RAs)
18 A1 --- DE- Declination sign (J2000) (DE-)
19- 20 I2 deg DEd Declination (J2000) (DEd)
22- 23 I2 arcmin DEm Declination (J2000) (DEm)
25- 28 F4.1 arcsec DEs Declination (J2000) (DEs)
30- 33 F4.2 arcsec ePos Uncertainty in X-ray position (ePos) (1)
35- 45 A11 --- Class ? Classification (Class)
47- 53 A7 --- Filter1 ? FUVCaF2 filter (Filter_1) (2)
55- 61 F7.4 deg RA1deg ? Right Ascension J2000 for FUVCaF2
(RAJ2000_1) (2)
63- 69 F7.4 deg DE1deg ? Declination J2000 for FUVCaF2
(DEJ2000_1) (2)
71- 76 F6.3 mag ABmag1 ? FUVCaF2 magnitude in AB system
(ABmag_1) (2)
78- 83 F6.3 mag mag1 ? FUVCaF2 magnitude in Vega system
(mag_1) (2)
85- 89 F5.3 mag e_mag1 ? Error of FUVCaF2 magnitude
(Errmag_1) (2)
91- 96 A6 --- Field1 ? Field that covers source position
(Field_1) (2)
98- 110 E13.7 mW/m2 Flux1 ? Flux in FUVCaF2 filter (flux_1)
112- 124 E13.7 mW/m2 e_Flux1 ? Error of flux in FUVCaF2 (flux1err)
126- 131 A6 --- Filter2 ? NUVB15 filter (Filter_2) (2)
133- 139 F7.4 deg RA2deg ? Right Ascension J2000 for NUVB15
(RAJ2000_2) (2)
141- 147 F7.4 deg DE2deg ? Declination J2000 for NUVB15
(DEJ2000_2) (2)
149- 154 F6.3 mag ABmag2 ? NUVB15 magnitude in AB system
(ABmag_2) (2)
156- 161 F6.3 mag mag2 ? NUVB15 magnitude in Vega system
(mag_2) (2)
163- 167 F5.3 mag e_mag2 ? Error of NUVB15 magnitude
(Errmag_2) (2)
169- 173 A5 --- Field2 ? Field that covers source position
(Field_2) (2)
175- 187 E13.8 mW/m2 Flux2 ? Flux in NUVB15 filter (flux_2)
189- 201 E13.7 mW/m2 e_Flux2 ? Error of flux in NUVB15 (flux2err)
203- 207 A5 --- Filter3 ? NUVN2 filter (Filter_3) (2)
209- 215 F7.4 deg RA3deg ? Right Ascension J2000 for NUVN25
(RAJ2000_3) (2)
217- 223 F7.4 deg DE3deg ? Declination J2000 for NUVN2
(DEJ2000_3) (2)
225- 230 F6.3 mag ABmag3 ? NUVN2 magnitude in AB system
(ABmag_3) (2)
232- 237 F6.3 mag mag3 ? NUVN2 magnitude in Vega system
(mag_3) (2)
239- 243 F5.3 mag e_mag3 ? Error of NUVN2 magnitude (Errmag_3) (2)
245- 248 A4 --- Field3 ? Field that covers source position
(Field_3) (2)
250- 262 E13.7 mW/m2 Flux3 ? Flux in NUVN2 filter (flux_3)
264- 276 E13.7 mW/m2 e_Flux3 ? Error of flux in NUVN2 (flux3err)
278- 286 A9 --- Filter4 ? FUVSilica filter (Filter_4) (2)
288- 294 F7.4 deg RA4deg ? Right Ascension J2000 for FUVSilica
(RAJ2000_4) (2)
296- 302 F7.4 deg DE4deg ? Declination J2000 for FUVSilica
(DEJ2000_4) (2)
304- 309 F6.3 mag ABmag4 ? FUVSilica magnitude in AB system
(ABmag_4) (2)
311- 316 F6.3 mag mag4 ? FUVSilica magnitude in Vega system
(mag_4) (2)
318- 322 F5.3 mag e_mag4 ? Error of FUVSilica magnitude
(Errmag_4) (2)
324- 328 A5 --- Field4 ? Field that covers source position
(Field_4) (2)
330- 342 E13.7 mW/m2 Flux4 ? Flux in FUVSilica filter (flux_4)
344- 356 E13.7 mW/m2 e_Flux4 ? Error of flux in FUVSilica (flux4err)
358- 368 A11 --- Filter5 ? FUVSapphire filter (Filter_5) (2)
370- 376 F7.4 deg RA5deg ? Right Ascension J2000 for FUVSapphire
(RAJ2000_5) (2)
378- 384 F7.4 deg DE5deg ? Declination J2000 for FUVSapphire
(DEJ2000_5) (2)
386- 391 F6.3 mag ABmag5 ? FUVSapphire magnitude in AB system
(ABmag_5) (2)
393- 398 F6.3 mag mag5 ? FUVSapphire magnitude in Vega system
(mag_5) (2)
400- 404 F5.3 mag e_mag5 ? Error of FUVSapphire magnitude
(Errmag_5) (2)
406- 411 A6 --- Field5 ? Field that covers source position
(Field_5) (2)
413- 425 E13.7 mW/m2 Flux5 ? Flux in FUVSapphire filter (flux_5)
427- 439 E13.7 mW/m2 e_Flux5 ? Error of flux in FUVSapphire
(flux5err)
441- 447 A7 --- Filter6 ? FUVBaF2 filter (Filter_6) (2)
449- 455 F7.4 deg RA6deg ? Right Ascension J2000 for FUVBaF2
(RAJ2000_6) (2)
457- 463 F7.4 deg DE6deg ? Declination J2000 for FUVBaF2
(DEJ2000_6) (2)
465- 470 F6.3 mag ABmag6 ? FUVBaF2 magnitude in AB system
(ABmag_6) (2)
472- 477 F6.3 mag mag6 ? FUVBaF2 magnitude in Vega system
(mag_6) (2)
479- 483 F5.3 mag e_mag6 ? Error of FUVBaF2 magnitude
(Errmag_6) (2)
485 I1 --- Field6 ? Field that covers source position
(Field_6) (2)
487- 499 E13.7 mW/m2 Flux6 ? Flux in FUVBaF2 filter (flux_6)
501- 513 E13.7 mW/m2 e_Flux6 ? Error of flux in FUVBaF2 (flux6err)
515- 529 I15 --- 4XMM-DR11 4XMM-DR11 source identifier (SRCID) (3)
531- 543 E13.7 mW/m2 FluxEP1 Flux in X-ray band 1 (SCEP1_FLUX) (3)
545- 557 E13.7 mW/m2 e_FluxEP1 Error of flux in band 1
(SCEP1FLUXERR) (3)
559- 571 E13.7 mW/m2 FluxEP2 Flux in X-ray band 2 (SCEP2_FLUX) (3)
573- 585 E13.7 mW/m2 e_FluxEP2 Error of flux in band 2
(SCEP2FLUXERR) (3)
587- 599 E13.7 mW/m2 FluxEP3 Flux in X-ray band 3 (SCEP3_FLUX) (3)
601- 613 E13.7 mW/m2 e_FluxEP3 Error of flux in band 3
(SCEP3FLUXERR) (3)
615- 627 E13.7 mW/m2 FluxEP4 Flux in X-ray band 4 (SCEP4_FLUX) (3)
629- 641 E13.7 mW/m2 e_FluxEP4 Error of flux in band 4
(SCEP4FLUXERR) (3)
643- 655 E13.7 mW/m2 FluxEP5 Flux in X-ray band 5 (SCEP5_FLUX) (3)
657- 669 E13.7 mW/m2 e_FluxEP5 Error of flux in band 5
(SCEP5FLUXERR) (3)
671- 676 I6 --- XMMOM ? Source identifier of XMM OM counterpart
(SRCNUM_OM) (4)
678- 686 F9.6 deg RAOdeg ? Right Ascension of OM counterpart
(RA_OM) (4)
688- 696 F9.6 deg DEOdeg ? Declination of OM counterpart
(DEC_OM) (4)
698- 707 F10.8 arcsec ePosOM ? Uncertainty in OM position
(POSERR_OM) (4)
709- 721 E13.7 mW/m2 FUVW2AB ? Flux in UVW2 filter (UVW2ABFLUX) (4)
723- 735 E13.7 mW/m2 e_FUVW2AB ? Error of flux in UVW2 filter
(UVW2ABFLUX_ERR) (4)
737- 749 E13.7 mW/m2 FUVM2AB ? Flux in UVM2 filter (UVM2ABFLUX) (4)
751- 763 E13.7 mW/m2 e_FUVM2AB ? Error of flux in UVM2 filter
(UVM2ABFLUX_ERR) (4)
765- 777 E13.7 mW/m2 FUVW1AB ? Flux in UVW1 filter (UVW1ABFLUX) (4)
779- 791 E13.7 mW/m2 e_FUVW1AB ? Error of flux in UVW1 filter
(UVW1ABFLUX_ERR) (4)
793- 805 E13.7 mW/m2 FUAB ? Flux in U filter (UABFLUX) (4)
807- 819 E13.7 mW/m2 e_FUAB ? Error of flux in U filter
(UABFLUX_ERR) (4)
821- 833 E13.7 mW/m2 FBAB ? Flux in B filter (BABFLUX) (4)
835- 847 E13.7 mW/m2 e_FBAB ? Error of flux in B filter
(BABFLUX_ERR) (4)
849- 861 E13.7 mW/m2 FVAB ? Flux in V filter (VABFLUX) (4)
863- 875 E13.7 mW/m2 e_FVAB ? Error of flux in V filter
(VABFLUX_ERR) (4)
877- 885 F9.6 mag UVW2ABmag ? UVW2 magnitude in AB system
(UVW2ABMAG) (4)
887- 897 F11.9 mag e_UVW2ABmag ? Error of UVW2 magnitude
(UVW2ABMAG_ERR) (4)
899- 907 F9.6 mag UVM2ABmag ? UVM2 magnitude in AB system
(UVM2ABMAG) (4)
909- 919 F11.9 mag e_UVM2ABmag ? Error of UVM2 magnitude
(UVM2ABMAG_ERR) (4)
921- 929 F9.6 mag UVW1ABmag ? UVW1 magnitude in AB system
(UVW1ABMAG) (4)
931- 941 F11.9 mag e_UVW1ABmag ? Error of UVW1 magnitude
(UVW1ABMAG_ERR) (4)
943- 951 F9.6 mag UABmag ? U magnitude in AB system (UABMAG) (4)
953- 963 F11.9 mag e_UABmag ? Error of U magnitude (UABMAG_ERR) (4)
965- 973 F9.6 mag BABmag ? B magnitude in AB system (BABMAG) (4)
975- 985 F11.9 mag e_BABmag ? Error of B magnitude (BABMAG_ERR) (4)
987- 995 F9.6 mag VABmag ? V magnitude in AB system (VABMAG) (4)
997-1007 F11.9 mag e_VABmag ? Error of V magnitude (VABMAG_ERR) (4)
1009-1013 A5 --- GClName Identifier of GALEX counterpart
(GCl_Name) (5)
1015-1019 F5.2 mag FUVmag ? GALEX FUV magnitude (FUVmag) (5)
1021-1025 F5.2 mag NUVmag ? GALEX NUV magnitude (NUVmag) (5)
1027-1031 F5.2 mag Umag ? GALEX U magnitude (Umag) (5)
1033-1037 F5.2 mag Bmag ? GALEX B magnitude (Bmag) (5)
1039-1043 F5.2 mag Vmag ? GALEX V magnitude (Vmag) (5)
1045-1049 F5.2 mag Rmag ? GALEX R magnitude (Rmag) (5)
1051-1055 F5.2 mag Imag ? GALEX I magnitude (Imag) (5)
1057-1061 F5.2 mag Jmag ? GALEX J magnitude (Jmag) (5)
1063-1067 F5.2 mag Hmag ? GALEX H magnitude (Hmag) (5)
1069-1073 F5.2 mag Ksmag ? GALEX Ks magnitude (Ksmag) (5)
1075-1084 E10.5 --- absPLUV ? UVIT fit powerlaw extinction
(abspluv)
1086-1095 E10.5 --- e_absPLUV ? Lower error of abspluv
(abspluv_lerr)
1097-1106 E10.5 --- E_absPLUV ? Upper error of abspluv
(abspluv_uerr)
1108-1117 F10.7 --- PhIPLUV ? UVIT fit powerlaw photon index
(phIpluv)
1119-1127 F9.7 --- e_PhIPLUV ? Lower error of phIpluv
(phIpluv_lerr)
1129-1137 F9.7 --- E_PhIPLUV ? Upper error of phIpluv
(phIpluv_uerr)
1139-1146 F8.4 --- chi2rPLUV ? Reduced chi square UVIT powerlaw fit
(chi2redpl_uv)
1148-1157 E10.6 --- absBBUV ? UVIT fit blackbody extinction
(absbbuv)
1159-1168 E10.5 --- e_absBBUV ? Lower error of absbbuv
(absbbuv_lerr)
1170-1179 E10.5 --- E_absBBUV ? Upper error of absbbuv
(absbbuv_uerr)
1181-1190 E10.6 keV kTBBUV ? UVIT fit blackbody temperature
(kTbbuv)
1192-1201 E10.5 keV e_kTBBUV ? Lower error of kTbbuv (kTbbuv_lerr)
1203-1212 E10.5 keV E_kTBBUV ? Upper error of kTbbuv (kTbbuv_uerr)
1214-1225 E12.7 km rBBUV ? UVIT fit blackbody radius (rbbuv)
1227-1238 E12.8 km e_rBBUV ? Lower error of rbbuv (rbbuv_lerr)
1240-1251 E12.7 km E_rBBUV ? Upper error of rbbuv (rbbuv_uerr)
1253-1258 F6.2 --- chi2rBBUB ? Reduced chi square UVIT powerlaw fit
(chi2redbb_uv)
1260-1270 F11.7 [mW/m2] logFluxmed ? Logarithm of median X-ray flux
(lgflux_med) (6)
1272-1282 F11.7 [mW/m2] b_logFluxmed ? Minimum of lgflux_med
(lgfluxmedmin) (6)
1284-1294 F11.7 [mW/m2] B_logFluxmed ? Maximum of lgflux_med
(lgfluxmedmax) (6)
1296-1306 F11.7 --- VarFluxmed ? Variability of median X-ray flux
(fluxmedvar)
1308-1318 F11.8 --- sigFluxmed ? Significance of variability of median
X-ray flux in sigma unit (fluxmedsig)
1320-1330 F11.7 [mW/m2] logFluxmod ? Logarithm of mode of X-ray flux(6)
(lgflux_mod) (6)
1332-1342 F11.7 [mW/m2] b_logFluxmod ? Minimum of lgflux_mod
(lgfluxmodmin) (6)
1344-1354 F11.7 [mW/m2] B_logFluxmod ? Maximum of lgflux_mod
(lgfluxmodmax) (6)
1356-1366 F11.7 --- VarFluxmod ? Variability of mode of X-ray flux
(fluxmodvar)
1368-1377 F10.7 --- sigFluxmod ? Significance of variability of mode of
X-ray flux in sigma unit ( fluxmodsig)
1379-1387 F9.6 [1/cm2] logNHmed ? Logarithm of medianforeground
absorption (lgnh_med) (6)
1389-1397 F9.6 [1/cm2] b_logNHmed ? Minimum of lgnh_med (lgnhmedmin) (6)
1399-1407 F9.6 [1/cm2] B_logNHmed ? Maximum of lgnh_med (lgnhmedmax) (6)
1409-1419 F11.7 --- VarNHmed ? Variability of median foreground
absorption (nhmedvar)
1421-1429 F9.7 --- sigNHmed ? Significance of variability of median
foreground absorption in sigma unit
(nhmedsig)
1431-1439 F9.6 [1/cm2] logNHmod ? Logarithm of mode of foreground
absorption (lgnh_mod) (6)
1441-1449 F9.6 [1/cm2] b_logNHmod ? Minimum of lgnh_mod (lgnhmodmin) (6)
1451-1459 F9.6 [1/cm2] B_logNHmod ? Maximum of lgnh_mod (lgnhmodmax) (6)
1461-1471 F11.7 --- VarNHmod ? Variability of mode of foreground
absorption (nhmodvar)
1473-1481 F9.7 --- sigNHmod ? Significance of variability of mode of
foreground absorption in sigma unit
(nhmodsig)
1483-1491 F9.7 --- PhImed ? Median photon index (PhI_med) (6)
1493-1501 F9.7 --- b_PhImed ? Minimum of PhI_med (PhImedmin) (6)
1503-1511 F9.7 --- B_PhImed ? Maximum of PhI_med (PhImedmax) (6)
1513-1521 F9.7 --- VarPhImed ? Variability of median photon index
(PhImedvar)
1523-1531 F9.7 --- sigPhImed ? Significance of variability of median
photon index in sigma unit (PhImedsig)
1533-1541 F9.7 --- PhImod ? Mode of photon index (PhI_mod) (6)
1543-1551 E9.1 --- b_PhImod ? Minimum of PhI_mod (PhImodmin) (6)
1553-1561 F9.7 --- B_PhImod ? Maximum of PhI_mod (PhImodmax) (6)
1563-1571 F9.7 --- VarPhImod ? Variability of mode of photon index
(PhImodvar)
1573-1581 F9.7 --- sigPhImod ? Significance of variability of mode of
photon index in sigma unit (PhImodsig)
1583-1591 F9.7 --- IINmed ? Median interinstrument normalisation
(IIN_med) (6)
1593-1601 F9.7 --- b_IINmed ? Minimum of IIN_med (IINmedmin) (6)
1603-1611 F9.7 --- B_IINmed ? Maximum of IIN_med (IINmedmax) (6)
1613-1621 F9.7 --- VarIINmed ? Variability of median IIN (IINmedvar)
1623-1631 F9.7 --- sigIINmed ? Significance of variability of median
IIN in sigma unit (IINmedsig)
1633-1641 F9.7 --- IINmod ? Mode of interinstrument normalisation
(IIN_mod) (6)
1643-1651 F9.7 --- b_IINmod ? Minimum of IIN_mod (IINmodmin) (6)
1653-1661 F9.7 --- B_IINmod ? Maximum of IIN_mod (IINmodmax) (6)
1663-1671 F9.7 --- VarIINmod ? Variability of mode of IIN
(IINmodvar)
1673-1681 F9.7 --- sigIINmod ? Significance of variability of mode of
IIN in sigma unit (IINmodsig)
1683-1688 F6.4 --- pvalue ? P-value of source fit (pvalue)
1690 I1 --- Flag [0/5]? Quality flag (flag) (7)
1692-1703 F12.9 --- aUV-X UV-to-X-ray photon index (a_uvx)
1705-1715 F11.9 --- e_aUV-X Error on a_uvx (auvxerr)
1717-1732 A16 --- Model Name of best-fit SED model (Model)
1734-1741 F8.1 K Teff ? Effective temperature of the model
(Teff)
1744-1749 F6.1 K e_Teff ? Error of effective temperature (e_Teff)
1751-1755 F5.2 [cm/s2] logg ? Logarithm of the surface gravity (logg)
1757-1761 F5.3 [cm/s2] e_logg ? Error of logg (e_logg)
1763-1766 F4.1 --- Meta ? Metallicity for the model (Meta.)
1768-1772 F5.3 --- e_Meta ? Error of Meta. (e_Meta.)
1774-1779 F6.4 mag Av ? Extinction used for dereddening the SED
(Av)
1781-1783 F3.1 mag e_Av ? Error of Av (e_Av)
1785-1865 A81 --- More More model parameters (more)
1867-1880 F14.7 --- Chi2 ? Chi square of the fitting (Chi2)
1882-1884 I3 --- Nfit ? Number of points used in the fitting
(Nfit)
1886-1888 I3 --- Ntot ? Number of observed points (Ntot)
1890-1904 F15.8 --- Vgf ? Visual goodness of fit -
two per cent observational error (Vgf)
1906-1917 F12.7 --- Vgfb ? Visual goodness of fit -
ten per cent observational error (Vgfb)
1919-1933 E15.8 mW/m2 Ftot ? Total flux of the star (Ftot)
1935-1947 E13.8 mW/m2 e_Ftot ? Error of Ftot (Ferr)
1949-1958 F10.3 0.1nm MaxLam ? Last wavelength used in fit (MaxLam)
1960-1975 A16 --- excfit Filter where infrared excess seems to
start (excfit)
--------------------------------------------------------------------------------
Note (1): from Stiele et al. (2011A&A...534A..55S 2011A&A...534A..55S, Cat. J/A+A/534/A55)
Note (2): from Leahy et al. (2020ApJS..247...47L 2020ApJS..247...47L, J/ApJS/247/47)
Note (3): from the 4XMM-DR11 catalogue (Webb et al., 2020A&A...641A.136W 2020A&A...641A.136W,
Cat. IX/69)
Note (4): from the XMM OM SUSS catalogue (Page et al., 2012MNRAS.426..903P 2012MNRAS.426..903P,
Cat. II/378)
Note (5): from Kang et al. (2012ApJS..199...37K 2012ApJS..199...37K, Cat. J/ApJS/199/37)
Note (6): from the XMM2Athena project
(https://nextcloud.ifca.es/index.php/s/m2gPp2ngPezqjCr;
see also Viitanen et al., 2025A+A........V)
Note (7): one of the following values:
3 = Formally unacceptable background fit
4 = Formally unacceptable fit (pvalue <0.01)
5 = No X-ray spectrum available
0 = None of the above issues occurred
--------------------------------------------------------------------------------
Acknowledgements:
Holger Stiele, h.stiele(at)fz-juelich.de
References:
Kang et al., 2012ApJS..199...37K 2012ApJS..199...37K A Comprehensive GALEX Ultraviolet Catalog of
Star Clusters in M31 and a Study of the Young Clusters
Leahy et al., 2020ApJS..247...47L 2020ApJS..247...47L AstroSat UVIT Survey of M31: Point-source
Catalog
Page et al., 2012MNRAS.426..903P 2012MNRAS.426..903P The XMM-Newton serendipitous ultraviolet
source survey catalogue
Stiele et al., 2011A&A...534A..55S 2011A&A...534A..55S The deep XMM-Newton survey of M 31
Viitanen et al, 2025A&A V Harnessing the XMM-Newton data: X-ray
spectral modelling of 4XMM-DR11 detections and 4XMM-DR11s sources
Webb et al., 2020A&A...641A.136W 2020A&A...641A.136W The XMM-Newton serendipitous survey. IX.
The fourth XMM-Newton serendipitous source catalogue
(End) Holger Stiele [FZJ, Germany], Patricia Vannier [CDS] 04-Nov-2025