J/A+A/532/A104ivo://CDS.VizieR/J/A+A/532/A104doi:10.26093/cds/vizier.35320104CDSNasonova O.G.de Freitas Pacheco J.A.Karachentsev I.D.2017-11-29T11:49:15Z2011-08-02T17:38:11ZCDS support team

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

cds-question@unistra.frgalaxy-clustersradial-velocityThis work aims to provide a new mass estimate for the Fornax cluster and the Fornax-Eridanus complex, avoiding methods like the virial or fits of the X-ray emission profile, which assume that the system is in equilibrium. This is probably not the case for Fornax, because it is still in process of formation. Our mass estimate is based on determination of the zero-velocity surface, which, in the context of the spherical infall model, permits an evaluation of the total mass inside such a surface. The zero-velocity surface radius R0 was estimated either by a running median procedure or by fitting the data to the velocity field expected from the spherical model, including effects of the cosmological constant. The velocity field in a region within 20Mpc of the Fornax center was mapped using a list of 109 galaxies whose distances have an average accuracy of 0.31mag in their distance modulus. Our analysis indicates that the mass of the Fornax cluster itself is [0.40-3.32]x10^14^M_{sun}_ inside a radius of [2.62-5.18]Mpc while the mass inside [3.88-5.60]Mpc, corresponding to the Fornax-Eridanus complex, is [1.30-3.93]x10^14^M_{sun}_.2011A&A...532A.104Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/532/A104CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/180 : Galaxies in Fornax Cluster & 5 nearby groups (Ferguson+, 1990)J/A+AS/133/325 : Velocities of 12 Fornax elliptical galaxies (Graham+ 1998)J/AJ/131/2114 : Radial velocities in Fornax dSph (Walker+, 2006)J/ApJ/594/1 : High-z supernovae VRI magnitudes and distances (Tonry+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/532/A104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/532/A104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/532/A104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/532/A104https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/532/A104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/532/A104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/532/A104/catalog (The list of 1140 galaxies in the wide vicinity of the Fornax cluster (r<=30Mpc))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/532/A104/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/532/A104/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/532/A104/catalog?GETtext/xml+votable180.050000true0.492083-16.5388890.0055555555555555565/8627 8632 6/14 559 611-612 665 673 690 727 764-765 896 909 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48942https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/532/A104?format=asciiOpticaldefaultJ/A+A/532/A104/catalogThe list of 1140 galaxies in the wide vicinity of the Fornax cluster (r<=30Mpc)NameGalaxy namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainRDistanceMpcpos.distance;pos.galactocentricfloate_RDistance errorMpcstat.errorfloatRFCFornax-centric distanceMpcpos.distance;pos.galactocentricfloatVLGVelocity relative to the Local Groupkm/sphys.velocintVFC1Fornax-centric velocity in 'minor attractor' case (1)km/sphys.velocintVFC2Fornax-centric velocity in 'major attractor' case (1)km/sphys.velocintthetaAngular distance to the Fornax-Eridanus complex barycenter (1)degpos.angDistance;pos.barycenterintlambdaAngle between the direction to the Local Group and to the Fornax-Eridanus complex barycenter (1)degpos.eqintSourceMethod used to estimate distance (2)meta.notecharTT? Morphological T-typesrc.morphintnullableTypeMorphological type (when no T-type)src.morph.typecharSimbadNameSimbad column added by the CDSmeta.idchar