J/A+A/695/A160ivo://CDS.VizieR/J/A+A/695/A160doi:10.26093/cds/vizier.36950160CDSSanders J.S.Bahar Y.E.Bulbul E.Ghirardini V.Liu A.Clerc N.,Ramos-Ceja M.E.Reiprich T.H.Balzer F.Comparat J.Kluge M.Pacaud F.,Zhang X.2025-07-31T20:01:14Z2025-03-14T08:43:30ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxy-clustersgalaxy-classification-systemsx-ray-sourcesThe first SRG/eROSITA all-sky X-ray survey, eRASS1, resulted in a catalogue of over twelve thousand optically-confirmed galaxy groups and clusters in the western Galactic hemisphere. Using the eROSITA images of these objects, we measure and study their morphological properties, including their concentration, central density and slope, ellipticity, power ratios, photon asymmetry, centroid shift and Gini coefficient. We also introduce new forward-modelled parameters which take account of the instrument point spread function (PSF), which are slosh, which measures how asymmetric the surface brightness distribution is, and multipole magnitudes, which are analogues to power ratios. Using simulations, we find some non forward-modelled parameters are strongly biased due to PSF and data quality. For the same clusters, we find similar values of concentration and central density compared to results by ourselves using Chandra and previous results from XMM-Newton. The population as a whole has log concentrations which are typically around 0.3 dex larger than South Pole Telescope or Planck-selected samples and the deeper eFEDS sample. The exposure time, detection likelihood threshold, extension likelihood threshold and number of counts affect the concentration distribution, but generally not enough to reduce the concentration to match the other samples. The concentration of clusters in the survey strongly affects whether they are detected as a function of redshift and luminosity. We introduce a combined disturbance score based on a Gaussian mixture model fit to several of the parameters. For brighter clusters, around 1/4 of objects are classified as disturbed using this score, which may be due to our sensitivity to concentrated objects.2025A&A...695A.160Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A160CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/682/A34 : SRG/eROSITA all-sky survey catalogs (eRASS1) (Merloni+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/695/A160https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/695/A160http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/695/A160https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/695/A160https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/695/A160http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/695/A160GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-rayOpticaldefaultJ/A+A/695/A160/morphMorphological parameters for 12705 optically-confirmed galaxy clusters detected in the eRASS1 eROSITA survey (table A1)Gini? Gini coefficient (G) (GINI)src.morph.paramfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCts800Counts inside 800kpc (CTS_800)ctphot.count;em.X-raydoubleE_Cts800Counts inside 800kpc positive error (CTS_800_POS)ctstat.error;stat.maxdoublee_Cts800[] Counts inside 800kpc negative error (CTS_800_NEG)ctstat.errordoublelogNS0Log gas density at a radius of 0.02R_500_ relative to a scaled critical density (NS_0)phys.density;arith.ratiodoubleE_logNS0Log gas density at a radius of 0.02R_500_ relative to a scaled critical density positive error (NS_0_POS)stat.error;stat.maxfloate_logNS0[] Log gas density at a radius of 0.02R_500_ relative to a scaled critical density negative error (NS_0_NEG)stat.errorfloatlogNS0PLog gas density at a radius of 0.02R_500_ relative to a scaled critical density, peak (NS_0_P)phys.density;arith.ratiodoubleE_logNS0PLog gas density at a radius of 0.02R_500_ relative to a scaled critical density, peak positive error (NS_0_P_POS)stat.error;stat.maxfloate_logNS0P[] Log gas density at a radius of 0.02R_500_ relative to a scaled critical density, peak negative error (NS_0_P_NEG)stat.errorfloatlogNe50Log gas electron density at a radius of 50kpc (NE_50)log(cm**-3)phys.density;phys.electrondoubleE_logNe50Log gas electron density at a radius of 50kpc positive error (NE_50_POS)log(cm**-3)stat.error;stat.maxfloate_logNe50[] Log gas electron density at a radius of 50kpc negative error (NE_50_NEG)log(cm**-3)stat.errorfloatlogNe50PLog gas electron density at a radius of 50kpc, peak (NE_50_P)log(cm**-3)phys.density;phys.electrondoubleE_logNe50PLog gas electron density at a radius of 50kpc, peak positive error (NE_50_P_POS)log(cm**-3)stat.error;stat.maxfloate_logNe50P[] Log gas electron density at a radius of 50kpc, peak negative error (NE_50_P_NEG)log(cm**-3)stat.errorfloatalphaInner density slope at 0.04R_500_ radius (ALPHA)meta.crypticfloatE_alphaInner density slope at 0.04R_500_ radius positive error (ALPHA_POS)stat.error;stat.maxfloate_alpha[] Inner density slope at 0.04R_500_ radius negative error (ALPHA_NEG)stat.error;pos.eq.rafloatalphaPInner density slope at 0.04R_500_ radius, peak (ALPHA_P)meta.crypticfloatE_alphaPInner density slope at 0.04R_500_ radius, peak positive error (ALPHA_P_POS)stat.error;stat.maxfloate_alphaP[] Inner density slope at 0.04R_500_ radius, peak negative error (ALPHA_P_NEG)stat.errorfloatalpha50Inner density slope at 50kpc radius (ALPHA_50)meta.crypticfloatE_alpha50Inner density slope at 50kpc radius positive error (ALPHA_50_POS)stat.error;stat.maxfloate_alpha50[] Inner density slope at 50kpc radius negative error (ALPHA_50_NEG)stat.errorfloatalpha50PInner density slope at 50kpc radius, peak (ALPHA_50_P)meta.crypticfloatE_alpha50PInner density slope at 50kpc radius, peak positive error (ALPHA_50_P_POS)stat.error;stat.maxfloate_alpha50P[] Inner density slope at 50kpc radius, peak negative error (ALPHA_50_P_NEG)stat.errorfloatlogC80-800Log ratio of integrated model surface brightness in apertures of 80 and 800kpc (C_80_800)phot.mag.sb;arith.ratiofloatE_logC80-800Log ratio of integrated model surface brightness in apertures of 80 and 800kpc positive error (C_80_800_POS)stat.error;stat.maxfloate_logC80-800[] Log ratio of integrated model surface brightness in apertures of 80 and 800kpc negative error (C_80_800_NEG)stat.errorfloatlogC80-800PLog ratio of integrated model surface brightness in apertures of 80 and 800kpc, peak (C_80_800_P)phot.mag.sb;arith.ratiofloatE_logC80-800PLog ratio of integrated model surface brightness in apertures of 80 and 800kpc, peak positive error (C_80_800_P_POS)stat.error;stat.maxfloate_logC80-800P[] Log ratio of integrated model surface brightness in apertures of 80 and 800kpc, peak negative error (C_80_800_P_NEG)stat.errorfloatlogCR500Log ratio of integrated model surface brightness in apertures of 0.1R_500_ and R_500_ (C_R500)phot.mag.sb;arith.ratiofloatE_logCR500Log ratio of integrated model surface brightness in apertures of 0.1R_500_ and R_500_ positive error (C_R500_POS)stat.error;stat.maxfloate_logCR500[] Log ratio of integrated model surface brightness in apertures of 0.1R_500_ and R_500_ negative error (C_R500_NEG)stat.errorfloatlogCR500PLog ratio of integrated model surface brightness in apertures of 0.1R_500_ and R500, peak (C_R500_P)phot.mag.sb;arith.ratiofloatE_logCR500PLog ratio of integrated model surface brightness in apertures of 0.1R_500_ and R500, peak positive error (C_R500_P_POS)stat.error;stat.maxfloate_logCR500P[] Log ratio of integrated model surface brightness in apertures of 0.1R_500_ and R500, peak negative error (C_R500_P_NEG)stat.errorfloatFRatio of offset between best fitting cluster centre and peak and R_500_ (F)stat.fit.paramfloatE_FRatio of offset between best fitting cluster centre and peak and R_500_ positive error (F_POS)stat.error;stat.maxfloate_F[] Ratio of offset between best fitting cluster centre and peak and R_500_ negative error (F_NEG)stat.errorfloatlogP10? Log power ratio P_1_/P_0_ (P10)stat.fit.omcfloatnullableE_logP10? Log power ratio P_1_/P_0_ positive error (P10_POS)stat.error;stat.maxfloatnullablee_logP10[]? Log power ratio P_1_/P_0_ negative error (P10_NEG)stat.errorfloatnullablelogP10P? Log power ratio P_1_/P_0_, peak (P10_P)stat.fit.omcfloatnullableE_logP10P? Log power ratio P_1_/P_0_, peak positive error (P10_P_POS)stat.error;stat.maxfloatnullablee_logP10P[]? Log power ratio P_1_/P_0_, peak negative error (P10_P_NEG)stat.errorfloatnullablelogP20? Log power ratio P_2_/P_0_ (P20)stat.fit.omcfloatnullableE_logP20? Log power ratio P_2_/P_0_ positive error (P20_POS)stat.error;stat.maxfloatnullablee_logP20[]? Log power ratio P_2_/P_0_ negative error (P20_NEG)stat.errorfloatnullablelogP20P? Log power ratio P_2_/P_0_, peak (P20_P)stat.fit.omcfloatnullableE_logP20P? Log power ratio P_2_/P_0_, peak positive error (P20_P_POS)stat.error;stat.maxfloatnullablee_logP20P[]? Log power ratio P_2_/P_0_, peak negative error (P20_P_NEG)stat.errorfloatnullablelogP30? Log power ratio P_3_/P_0_ (P30)stat.fit.omcdoublenullableE_logP30? Log power ratio P_3_/P_0_ positive error (P30_POS)stat.error;stat.maxfloatnullablee_logP30[]? Log power ratio P_3_/P_0_ negative error (P30_NEG)stat.errorfloatnullablelogP40? Log power ratio P_4_/P_0_ (P40)stat.fit.omcdoublenullableE_logP40? Log power ratio P_4_/P_0_ positive error (P40_POS)stat.error;stat.maxfloatnullablee_logP40[]? Log power ratio P_4_/P_0_ negative error (P40_NEG)stat.errorfloatnullableE_Gini? Gini coefficient (G) positive error (GINI_POS)stat.error;stat.maxfloatnullablee_Gini[]? Gini coefficient (G) negative error (GINI_NEG)stat.errorfloatnullableAphot? Photon asymmetry (A_phot) (APHOT)src.morph.paramdoublenullableE_Aphot? Photon asymmetry (A_phot) positive error (APHOT_POS)stat.error;stat.maxdoublenullablee_Aphot[]? Photon asymmetry (A_phot) negative error (APHOT_NEG)stat.errordoublenullableAphotP? Photon asymmetry (A_phot), peak (APHOT_P)src.morph.paramdoublenullableE_AphotP? Photon asymmetry (A_phot), peak positive error (APHOT_P_POS)stat.error;stat.maxdoublenullablee_AphotP[]? Photon asymmetry (A_phot), peak negative error (APHOT_P_NEG)stat.errordoublenullableCentroid? Centroid shift (w) (CENTROID)phys.atmol.lineShiftfloatnullableE_Centroid? Centroid shift (w) positive error (CENTROID_POS)stat.error;stat.maxfloatnullablee_Centroid[]? Centroid shift (w) negative error (CENTROID_NEG)stat.errorfloatnullableEllEllipticity (epsilon) (ELLIPTICITY)src.ellipticityfloatE_EllEllipticity (epsilon) positive error (ELLIPTICITY_POS)stat.error;stat.maxfloate_Ell[] Ellipticity (epsilon) negative error (ELLIPTICITY_NEG)stat.errorfloatEllThetaEllipticity angle (ELLIPTICITY_THETA)degpos.posAngdoubleE_EllTheta[] Ellipticity angle positive error (ELLIPTICITY_THETA_POS)degpos.posAngdoublee_EllTheta[] Ellipticity angle negative error (ELLIPTICITY_THETA_NEG)degpos.posAngdoubleSlosHSlosh (H), the degree of sloshing factor (SLOSH)stat.fit.paramfloatE_SlosH[] Slosh (H), the degree of sloshing factor, positive error (SLOSH_POS)stat.error;stat.maxfloate_SlosH[] Slosh (H), the degree of sloshing factor, negative error (SLOSH_NEG)stat.errorfloatSlosHThetaSlosh, the degree of sloshing factor, angle (SLOSH_THETA)degpos.posAngdoubleE_SlosHTheta[] Slosh (H), the degree of sloshing factor, angle positive error (SLOSH_THETA_POS)degpos.posAngdoublee_SlosHTheta[] Slosh (H), the degree of sloshing factor, angle negative error (SLOSH_THETA_NEG)degpos.posAngdoubleM1? Multipole magnitude for order 1 (M1)phot.magfloatnullableE_M1? Multipole magnitude for order 1 positive error (M1_POS)stat.error;stat.maxfloatnullablee_M1[]? Multipole magnitude for order 1 negative error (M1_NEG)stat.errorfloatnullableM1Theta? Multipole magnitude for order 1 angle (M1_THETA)degpos.posAngdoublenullableE_M1Theta[]? Multipole magnitude for order 1 angle positive error (M1_THETA_POS)degpos.posAngdoublenullablee_M1Theta[]? Multipole magnitude for order 1 angle negative error (M1_THETA_NEG)degpos.posAngdoublenullableM2Multipole magnitude for order 2 (M2)phot.magfloatE_M2[] Multipole magnitude for order 2 positive error (M2_POS)stat.error;stat.maxfloate_M2[] Multipole magnitude for order 2 negative error (M2_NEG)stat.errorfloatM2ThetaMultipole magnitude for order 2 angle (M2_THETA)degpos.posAngdoubleE_M2Theta[] Multipole magnitude for order 2 angle positive error (M2_THETA_POS)degpos.posAngdoublee_M2Theta[] Multipole magnitude for order 2 angle negative error (M2_THETA_NEG)degpos.posAngdoubleM3Multipole magnitude for order 3 (M3)phot.magfloatE_M3Multipole magnitude for order 3 positive error (M3_POS)stat.error;stat.maxfloate_M3[] Multipole magnitude for order 3 negative error (M3_NEG)stat.errorfloatM3ThetaMultipole magnitude for order 3 angle (M3_THETA)degpos.posAngdoubleE_M3Theta[] Multipole magnitude for order 3 angle positive error (M3_THETA_POS)degpos.posAngdoublee_M3Theta[] Multipole magnitude for order 3 angle negative error (M3_THETA_NEG)degpos.posAngdoubleM4Multipole magnitude for order 4 (M4)phot.magfloatE_M4Multipole magnitude for order 4 positive error (M4_POS)stat.error;stat.maxfloate_M4[] Multipole magnitude for order 4 negative error (M4_NEG)stat.errorfloatM4Theta? Multipole magnitude for order 4 angle (M4_THETA)degpos.posAngdoublenullableE_M4Theta[]? Multipole magnitude for order 4 angle positive error (M4_THETA_POS)degpos.posAngdoublenullablee_M4Theta[]? Multipole magnitude for order 4 angle negative error (M4_THETA_NEG)degpos.posAngdoublenullableD-combCombined disturbance score, based on Ell, H, M1 to M4 and FD (D_COMB)meta.codefloatD-shapeCombined disturbance score, based on Ell, H, M1 to M4, FD and C80-800 (D_SHAPE)meta.codefloatNameName (IAUNAME), 1eRASS JHHMMSS.s-FFMMSS (NAME)meta.id;meta.maincharDetUIdeROSITA detection ID (DETUID)meta.idchar