J/A+A/691/A135ivo://CDS.VizieR/J/A+A/691/A135doi:10.26093/cds/vizier.36910135CDSBarrena R.Pizzuti L.Chon G.Bohringer H.2025-02-27T20:01:57Z2024-11-06T12:41:40ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesradial-velocityvisible-astronomysloan-photometryWe analyse the dynamical state of the galaxy clusters Abell 76 and Abell 1307 from the optical point of view, presenting a coherent scenario that responds to the X-ray emissions observed in these structures. Our study is based on 231 and 164 spectroscopic redshifts, for the clusters A76 and A1307, respectively, obtained mostly with the Telescopio Nazionale Galileo, and complemented with others collected from the SDSS DR16 spectroscopic database and the literature. We find that A76 and A1307 are two galaxy clusters at z=0.0390 and 0.0815, respectively, with velocity dispersions of 650+/-56km/s and 863+/-85km/s, and showing velocity distributions following, in practice, Gaussian profiles. From our dynamical analysis, X-ray studies and SZ-Planck emission, we obtain a mean total mass M_500_=1.7+/-0.6x10^14^M_{sun}_ and 3.5+/-1.3x10^14^M_{sun}_ for A76 and A1307, respectively. Using the SDSS DR16 photometric database we find that the spatial distribution of likely cluster members in the case of A76 is very anisotropic, while A1307 shows a compact distribution of galaxies, but double peaked and elongated in the south-north direction. Using XMM-Newton X-ray data, we compare the surface brightness maps with galaxy distributions and see that both distributions are correlated. We reconstruct the total mass profile and velocity anisotropy of both clusters by analysing the full projected phase space, through the MG-MAMPOSSt code. Our study reveals a slight indication of radial orbits for A76, while A1307 seems to prefer more isotropic orbits in the whole cluster range. Summarizing, A76 represent a typical young cluster, in an early stage of formation, with a very low X-ray surface brightness but high temperature showing a very anisotropic galaxy distribution. A1307 is however more consolidated and massive showing in-homogeneous galaxy distribution and an asymmetric X-ray emission, which suggest a scenario characterised by recent minor mergers.2024A&A...691A.135Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A135CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/691/A135https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/691/A135http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/691/A135https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/691/A135https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/691/A135http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/691/A135GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/691/A135/tablea1 (Velocity catalogue of galaxies measured spectroscopically in the A76 field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/691/A135/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/691/A135/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/691/A135/tablea1?GETtext/xml+votable180.050000true9.61529176.65927780.005555555555555556Cone search capability for table J/A+A/691/A135/tablea2 (Velocity catalogue of galaxies measured spectroscopically in the A1307 field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/691/A135/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/691/A135/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/691/A135/tablea2?GETtext/xml+votable180.050000true173.03537514.51758330.0055555555555555565/4542 6/28181 28183https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/691/A135?format=asciiOpticaldefaultJ/A+A/691/A135/tablea1Velocity catalogue of galaxies measured spectroscopically in the A76 fieldCommentEmission line galaxy or BCG (ELG or BCGN)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifier numbermeta.id;meta.mainintFlag[*] "*" means "classified as cluster member"meta.code.errorchargmag? Magnitude in g'-bandmagphot.mag;em.opt.Bfloatnullablermag? Magnitude in r'-bandmagphot.mag;em.opt.RfloatnullableRAJ2000Right Ascension (J2000) at Ep=1989.0pos.eq.ra;meta.mainDEJ2000Declination (J2000) at Ep=1989.0pos.eq.dec;meta.mainRVRadial Velocitykm/sphys.veloc;pos.heliocentricinte_RVError in radial Velolitykm/sstat.errorintJ/A+A/691/A135/tablea2Velocity catalogue of galaxies measured spectroscopically in the A1307 fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentifier numbermeta.id;meta.mainintFlag[*] "*" means "classified as cluster member"meta.code.errorcharRAJ2000Right Ascension (J2000) at Ep=1989.0pos.eq.ra;meta.mainDEJ2000Declination (J2000) at Ep=1989.0pos.eq.dec;meta.mainRVRadial Velocitykm/sphys.veloc;pos.heliocentricinte_RVError in radial Velolitykm/sstat.errorintgmag? Magnitude in g'-bandmagphot.mag;em.opt.Bfloatnullablermag? Magnitude in r'-bandmagphot.mag;em.opt.RfloatnullableCommentEmission line galaxy or BCG (ELG or BCGN)meta.notechar