J/MNRAS/465/2616ivo://CDS.VizieR/J/MNRAS/465/2616doi:10.26093/cds/vizier.74652616CDSManolopoulou M.Plionis M.2024-08-16T20:19:55Z2019-02-01T13:14:00ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxy-rotationWe study the possible rotation of cluster galaxies, developing, testing, and applying a novel algorithm which identifies rotation, if such does exist, as well as its rotational centre, its axis orientation, rotational velocity amplitude, and, finally, the clockwise or counterclockwise direction of rotation on the plane of the sky. To validate our algorithms we construct realistic Monte Carlo mock rotating clusters and confirm that our method provides robust indications of rotation. We then apply our methodology on a sample of Abell clusters with z<=0.1 with member galaxies selected from the Sloan Digital Sky Survey DR10 spectroscopic data base. After excluding a number of substructured clusters, which could provide erroneous indications of rotation, and taking into account the expected fraction of misidentified coherent substructure velocities for rotation, provided by our Monte Carlo simulation analysis, we find that ~23 per cent of our clusters are rotating under a set of strict criteria. Loosening the strictness of the criteria, on the expense of introducing spurious rotation indications, we find this fraction increasing to ~28 per cent. We correlate our rotation indicators with the cluster dynamical state, provided either by their Bautz-Morgan type or by their X-ray isophotal shape and find for those clusters showing rotation within 1.5h^-1^_70_ Mpc that the significance of their rotation is related to the dynamically younger phases of cluster formation but after the initial anisotropic accretion and merging has been completed. Finally, finding rotational modes in galaxy clusters could lead to the necessity of correcting the dynamical cluster mass calculations.2017MNRAS.465.2616Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/465/2616CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/465/2616https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/465/2616http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/465/2616https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/465/2616https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/465/2616http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/465/2616GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/465/2616/table3 (The Abell clusters of our sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/465/2616/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/465/2616/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/465/2616/table3?GETtext/xml+votable180.050000true10.408-9.3430.005555555555555556Cone search capability for table J/MNRAS/465/2616/table4 (*The clusters with significant rotation within r=1.5h^-1^_70_Mpc and with Nmem>=50)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/465/2616/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/465/2616/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/465/2616/table4?GETtext/xml+votable180.050000true37.17828541.459958060.005555555555555556Cone search capability for table J/MNRAS/465/2616/table5 (*The clusters with significant rotation within r=2.5h^-1^_70_Mpc and with Nmem>=50)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/465/2616/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/465/2616/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/465/2616/table5?GETtext/xml+votable180.050000true37.3156361141.423283060.0055555555555555566/1701 2406 4605 4713 4989 4991 5005 5113 5116 5373 5394 5435 5438 5524 5535 5974 5982 6000 6002 6478 6546 6559 7070 7089 8212 8220 8245 8266 8271 8289 8442 8515 8520 8526 8577 8580 8582 8590 8648 8735 8788 8824 8841 8884 8919 8970 9021 9036 9040 9048 9050 9052 9072 9075 9088 9168 9354 9366 9468 9471 9504 9506 9776 10271 10295 10311-10312 10336 10379 10386 10395 10483 10716 10812 10814 10823 11182 11591 11809 17237 17300 17316 17841 18009 18388 18585 18607 18778 18947 19094 26042-26043 26087 26141 26185 26208 26389 26432 26990 27081 27227 27406 27417 27482 27671 27685 27736 27765 27770 27775 27777 27783 27807 27825 27865 27879 27886 28005 28026 28181 28205 28251 28265 28316 28414-28415 28488 31395https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/465/2616?format=asciidefaultJ/MNRAS/465/2616/table3The Abell clusters of our samplezRedshiftsrc.redshiftfloatACOCluster Abell numbermeta.id;meta.mainintprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintmoreindicates rotation informations in tables 4 and/or 5meta.ref.urlcharDEJ2000Declination (J2000)degpos.eq.dec;meta.mainBM? BM typesrc.morph.typefloatnullableN*Measure of the cluster richness (1)src.class.richnessintSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/465/2616/table4*The clusters with significant rotation within r=1.5h^-1^_70_Mpc and with Nmem>=50recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCrit[SL] Strict (S) or loose (L) criteria (2)meta.codecharACOCluster Abell namemeta.id;meta.mainintm_ACO[ab] Multiplicity index on ACOmeta.code.multipcharn_ACO[*] Note on ACO (1)meta.notecharzMean redshift of the memberssrc.redshiftdoubleNmemNumber of members usedmeta.numberintthetarotOrientation on the plane of the sky of the rotation axisdegpos.posAngintvrotRotation amplitudekm/sphys.veloc.rotatinte_vrotrms uncertainty on rotation amplitudekm/sstat.errorintRAcRight ascension of chosen rotation centre (J2000)degpos.eq.ra;meta.mainDEcDeclination of chosen rotation centre (J2000)degpos.eq.dec;meta.mainPKSMinimum value of the KS probability (2)stat.fit.goodnessdoublechi2id/dfchi^2^_id/df (2)meta.notefloatchi2r/dfchi^2^_r/df (2)meta.notefloatchi2id/chi2rchi^2^_id_/chi^2^_r (2)meta.notefloatI[1/2] Indication for the direction of rotation (1 meaning clockwise and 2 anticlockwise) (3)meta.codeintsigmaInitial cluster velocity dispersionkm/sphys.veloc.dispersionintsigmacCorrected, for rotation, cluster velocity dispersionkm/sphys.veloc.dispersionintJ/MNRAS/465/2616/table5*The clusters with significant rotation within r=2.5h^-1^_70_Mpc and with Nmem>=50recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCrit[SL] Strict (S) or loose (L) criteria (2)meta.codecharACOCluster Abell namemeta.id;meta.mainintm_ACO[ab] Multiplicity index on ACOmeta.code.multipcharn_ACO[*] Note on ACO (1)meta.notecharzMean redshift of the memberssrc.redshiftdoubleNmemNumber of members usedmeta.numberintthetarotOrientation on the plane of the sky of the rotation axisdegpos.posAngintvrotRotation amplitudekm/sphys.veloc.rotatinte_vrotrms uncertainty on rotation amplitudekm/sstat.errorintRAcRight ascension of chosen rotation centre (J2000)degpos.eq.ra;meta.mainDEcDeclination of chosen rotation centre (J2000)degpos.eq.dec;meta.mainPKSMinimum value of the KS probability (2)stat.fit.goodnessdoublechi2id/dfchi^2^_id/df (2)meta.notefloatchi2r/dfchi^2^_r/df (2)meta.notefloatchi2id/chi2rchi^2^_id_/chi^2^_r (2)meta.notefloatI[1/2] Indication for the direction of rotation (1 meaning clockwise and 2 anticlockwise) (3)meta.codeintsigmaInitial cluster velocity dispersionkm/sphys.veloc.dispersionintsigmacCorrected, for rotation, cluster velocity dispersionkm/sphys.veloc.dispersionint