J/A+A/663/A158ivo://CDS.VizieR/J/A+A/663/A158doi:10.26093/cds/vizier.36630158CDSGaldeano D.Coldwell G.Duplancic F.Alonso S.Pereyra L.,Minniti D.Zelada Bacigalupo R.Valotto C.Baravalle L.Alonso M.V.,Nilo Castellon J.L.2025-01-23T20:00:57Z2022-07-27T16:01:55ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiescatalogsinfrared-photometrygalaxy-classification-systemsThe Ophiuchus cluster of galaxies, located at low latitudes in the direction of the Galactic bulge, has been relatively poorly studied in comparison with other rich galaxy clusters like Coma, Virgo and Fornax, in spite of being the 2nd brightest X-ray cluster in the sky. Our aim is perform a study of the hidden galaxy population of the massive cluster Ophiuchus located in the Zone of Avoidance. Deep near-infrared images and photometry from the VISTA Variables in the Via Lactea eXtended survey (VVVX) were used to detect galaxy member candidates of Ophiuchus cluster up to 2Mpc from the cD galaxy 2MASX J17122774-2322108 using the Galdeano et al. criteria to select the galaxies among the foreground sources. We also perform a morphological visual classification, color-magnitude diagram and density profiles. We identified 537 candidate galaxy members of the Ophiuchus cluster up to 2Mpc from the cD galaxy, increasing 7 times the number of galaxies reported in previous catalogs. In addition, we performed a morphological classification of these galaxy candidates finding that the fraction of Ellipticals reaches more than the 60% in the central region of the cluster. On the other hand the Spirals fraction is lower than the 20% remaining almost constant throughout the cluster. Moreover, we study the red sequence of galaxy member candidates and use mock catalogs to explore the density profile of the cluster, finding that the value derived from the mock catalog towards an overdense region is in agreement with the galaxy excess of the central zone of the Ophiuchus cluster. Our investigation of the hidden population of Ophiuchus galaxies underscores the importance of this cluster as a prime target for future photometric and spectroscopic studies. Moreover the results of this work highlights the potential of VVVX survey to study extragalactic objects in the Zone of Avoidance.2022A&A...663A.158Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/663/A158CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)VII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)I/345 : Gaia DR2 (Gaia Collaboration, 2018)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/A+A/583/A124 : Ophiuchus r'g'z' photometry and redshifts (Durret+, 2015)J/A+A/613/A20 : Oph cluster galaxies r' magnitudes and sizes (Durret+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/663/A158https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/663/A158http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/663/A158https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/663/A158https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/663/A158http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/663/A158GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/663/A158/tablea1 (VVVX galaxies of the massive cluster Ophiuchus)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/663/A158/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/663/A158/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/663/A158/tablea1?GETtext/xml+votable180.050000true257.4648333-24.01130560.0055555555555555565/7308 6/29221 292237.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/663/A158?format=asciiOpticalInfrareddefaultJ/A+A/663/A158/tablea1VVVX galaxies of the massive cluster Ophiuchuse_KsmagError Total magnitude Ksmagstat.error;phot.magfloatDEJ2000Declination (J2000)pos.eq.dec;meta.mainKsmag(3)Aperture magnitude within 3 pixels in Ksmagphot.mag;em.IR.Kfloate_Ksmag(3)Error Aperture magnitude within 3 pixels in Ksmagstat.errorfloatHmag(3)Aperture magnitude within 3 pixels in Hmagphot.mag;em.IR.Hfloate_Hmag(3)Error Aperture magnitude within 3 pixels in Hmagstat.errorfloatJmag(3)Aperture magnitude within 3 pixels in Jmagphot.mag;em.IR.Jfloate_Jmag(3)Error Aperture magnitude within 3 pixels in Jmagstat.errorfloatKsmagTotal magnitude Ksmagphot.mag;em.IR.KfloatHmagTotal magnitude Hmagphot.mag;em.IR.Hfloate_HmagError Total magnitude Hmagstat.error;phot.magfloatJmagTotal magnitude Jmagphot.mag;em.IR.Jfloate_JmagError Total magnitude Jmagstat.error;phot.magfloatCSClass_Star parameter (0=galaxy, 1=star)src.class.starGalaxyfloatR1/2Half light radiusarcsecphys.angSize;srcfloatMType[0/5] Morphological typesrc.morph.typeintz? Redshiftsrc.redshiftfloatnullableONameSource name in other surveysmeta.idcharr_ONameReference (Bibcode) for redshifts and source name in other surveys (1)meta.ref;pos.framecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIAUnameUnique identifier in IAU naming convention VVVXJHHMMSS.ss+DDMMSS.smeta.id;meta.maincharRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainSimbadSimbad column added by the CDSmeta.ref.urlchar