J/MNRAS/440/405ivo://CDS.VizieR/J/MNRAS/440/405doi:10.26093/cds/vizier.74400405CDSMcCall M.L.2024-08-09T20:14:39Z2015-04-10T15:43:00ZCDS support team

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

cds-question@unistra.frgalaxiesradial-velocitygalaxy-classification-systemsDistances and near-infrared luminosities of the brightest galaxies in the Local Volume have been re-evaluated in order to gain a fully homogeneous collection of data for elucidating the framework of the Local Sheet and its relevance to Local Group evolution. It is demonstrated that the Local Sheet is both geometrically and dynamically distinct from the Local Supercluster and that the evolution of the Sheet and Local Group were probably interconnected. The Sheet is inclined by 8{deg} with respect to the Local Supercluster, and the dispersion of giant members about the mid-plane is only 230kpc. A 'Council of Giants' with a radius of 3.75Mpc encompasses the Local Group, demarcating a clear upper limit to the realm of influence of the Local Group. The only two giant elliptical galaxies in the Sheet sit on opposite sides of the Council, raising the possibility that they have somehow shepherded the evolution of the Local Group. The position vector of the Andromeda galaxy with respect to the Milky Way deviates only 11{deg} from the Sheet plane and only 11{deg} from the projected axis of the ellipticals. The Local Group appears to be moving away from a ridge in the potential surface of the Council on a path parallel to the elliptical axis. Spin directions of the giants in the Council are distributed over the sky in a pattern which is very different from that of giants beyond, possibly in reaction to the central mass asymmetry that developed into the Local Group. By matching matter densities of Group and Council giants, the edge of the volume of space most likely to have contributed to the development of the Local Group is shown to be very close to where gravitational forces from the Local Group and the Council balance. The boundary specification reveals that the Local Sheet formed out of a density perturbation of very low amplitude (~10%), but that normal matter was incorporated into galaxies with relatively high efficiency (~40%). It appears that the development of the giants of the Local Sheet was guided by a pre-existing flattened framework of matter.2014MNRAS.440..405Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/440/405CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/440/405https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/440/405http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/440/405https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/440/405https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/440/405http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/440/405GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/440/405/galaxies (Brightest LVC (Local Volume Catalog, Karachentsev et al. 2004, J/AJ/127/2031) galaxies: coordinates (table1), sources of observations (table2) and Orientational data (table3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/440/405/galaxies?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/440/405/galaxies?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/440/405/galaxies?GETtext/xml+votable180.050000true3.7233417-39.19662780.0055555555555555566/2121 2155 2320 2374 2409 2709 3278 3299 3304 3389 3506 4511 5067 5142 7606 7743 7941 10761 10847 10856 10888 10911 10941 10977 11027 11434 11639 11961 15592 16441 16655 16701 18398 24912 25083 26803 27512 27514-27515 27518 27604 28015 28167 28200 33193 35514 35536 38390 40156 41586 41949 43233 43262 43809 43881 45305https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/440/405?format=asciiOpticaldefaultJ/MNRAS/440/405/galaxiesBrightest LVC (Local Volume Catalog, Karachentsev et al. 2004, J/AJ/127/2031) galaxies: coordinates (table1), sources of observations (table2) and Orientational data (table3)SimbadNameSimbad column added by the CDSmeta.idchare_Vflat? rms uncertainty on Vflatkm/sstat.errorintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of galaxymeta.id;meta.maincharLshLongitude in rotated Sheet coordinates (8)degpos.framefloatBshLatitude in rotated Sheet coordinates (8)degpos.framefloatTT[-5/9.8] Numerical index of the morphological stage in the Revised Hubble Systemmeta.codefloatHRV[-301/1100] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_HRVrms uncertainty on HRVkm/sstat.errorfloatVLG[-451/309] Local group radial velocity (2)km/sphys.veloc;pos.lgfloate_VLGrms uncertainty on VLGkm/sstat.errorfloattau1[0/2.1] Optical depth {tau}_1_ of interstellar dust in the Milky Way at 1{mu}mphys.absorption.opticalDepthfloate_tau1rms uncertainty on tau1degstat.errorfloatDM[14.5/31] Heliocentric distance modulus (3)magphot.mag.distModfloate_DMrms uncertainty on DMmagstat.errorfloatn_DMMethod used to derive the distance (4)meta.code;obscharXshRotated Cartesian Sheet coordinates (1)Mpcpos.distance;pos.cartesian.xfloate_Xshrms uncertainty on XshMpcstat.errorfloatYshRotated Cartesian Sheet Y coordinate (1)Mpcpos.distance;pos.cartesian.yfloate_Yshrms uncertainty on YshMpcstat.errorfloatZshRotated Cartesian Sheet Z coordinate (1)Mpcpos.distance;pos.cartesian.zfloate_Zshrms uncertainty on ZshMpcstat.errorfloatKsMAGAbsolute Ks magnitudemagphys.magAbs;em.IR.Kfloate_KsMAGrms uncertainty on Ksmagmagstat.errorfloatVMAGAbsolute V magnitudemagphys.magAbs;em.opt.Vfloate_VMAGrms uncertainty on Vmagmagstat.errorfloatB-VFully corrected integrated B-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.error;phot.color;em.opt.BfloatlogM*Logarithm of the stellar mass (5)log(solMass)phys.massfloate_logM*rms uncertainty on logM*log(solMass)stat.errorfloati[0/90]? Inclination to the plane of the skydegsrc.orbital.inclinationfloatnullablee_i? rms uncertainty on idegstat.errorfloatnullablen_i[+0-] Inclination spin vector orientation (7)meta.notecharPA[0/180] Position angle of the line of nodes (6)degpos.posAng;spect.linefloate_PArms uncertainty on PAdegstat.errorfloatn_PA[+0-] Position angle spin vector orientation (7)meta.notecharVflat? Tilt-corrected rotational velocity in the plateau of the rotation curvekm/sphys.veloc.rotatintnullableLsh(AM)? Longitude of the angular momentum vector in rotated Sheet coordinatespos.framefloatnullablee_Lsh(AM)? rms uncertainty on Lsh(AM)stat.errorfloatnullableBsh(AM)? Latitude of the angular momentum vector in rotated Sheet coordinatespos.framefloatnullablee_Bsh(AM)? rms uncertainty on Bsh(AM)stat.errorfloatnullableVelOrigin of heliocentric velocity, in refs.datmeta.bibcharOrientOrigin of axis ratio, tilt, and position angle, in refs.datmeta.bibcharRotOrigin of velocity field, in refs.datmeta.bibcharPhotOrigin of integrated photometry (B-V, V, and Ks), in refs.datmeta.bibcharDistOrigin of observations required to determine distance, in refs.datmeta.bibchari(ph)[0/90]? Tilt from photometrydegsrc.orbital.inclinationfloatnullablee_i(ph)? rms uncertainty on i(ph)degstat.errorfloatnullablei(kin)[0/90]? Tilt from kinematicsdegsrc.orbital.inclinationfloatnullablee_i(kin)? rms uncertainty on i(kin)degstat.errorfloatnullablePA(ph)[0/180] Position angle of line of nodes from photometry (9)degpos.posAng;spect.linefloate_PA(ph)rms uncertainty on PA(ph)degstat.errorfloatPA(kin)[0/180]? Position angle of line of nodes from kinematics (9)degpos.posAng;spect.linefloatnullablee_PA(kin)? rms uncertainty on PA(kin)degstat.errorfloatnullableNotesNotes on galaxy (10)meta.notechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableJ/MNRAS/440/405/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibCodemeta.bib.bibcodecharAutAuthors' namemeta.id;meta.maincharComCommentsmeta.notechar