J/ApJ/516/693ivo://CDS.VizieR/J/ApJ/516/693doi:10.26093/cds/vizier.15160693CDSHonma M.2013-03-06T06:17:45Z2000-03-16T09:36:57ZCDS support team

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

cds-question@unistra.frgalaxiessurveysWe report on the mass-to-light ratio determination based on a newly selected binary galaxy sample, which includes a large number of pairs whose separations exceed a few hundred kpc. The probability distributions of the projected separation and the velocity difference have been calculated considering the contamination of optical pairs, and the mass-to-light (M/L) ratio has been determined based on the maximum likelihood method. The best estimate of the M/L in the B band for 57 pairs is found to be 28 - 36 depending on the orbital parameters and the distribution of optical pairs (solar unit: H_o_ = 50 km s^-1^ Mpc^-1^). The best estimate of the M/L for 30 pure spiral pairs is found to be 12 - 16. These results are relatively smaller than those obtained in previous studies but are consistent with each other within the errors. Although the number of pairs with large separation is significantly increased compared with previous samples, the M/L does not show any tendency of increase but is found to be almost independent of the separation of pairs beyond 100 kpc. The constancy of the M/L beyond 100 kpc may indicate that the typical halo size of spiral galaxies is less than 100 kpc.1999ApJ...516..693Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/516/693CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/516/693https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/516/693http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/516/693https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/516/693https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/516/693http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/516/693GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/516/693/table1 (Data for 57 pairs in the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/516/693/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/516/693/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/516/693/table1?GETtext/xml+votable180.050000true235.58429590.4730380.0055555555555555566/203 4212 4599 4807 4840 5288 5793 5796 5799 7265 7267 7440 7442 7523 8018 8113 9109 9894 11026 11207 11218 11791 11824 17134 17281 17286 18002 18500 18714 18731 18809 18895 19611 19614 23178 25460 26758 27365 27367 27874 27875 28023 28463 31381 31426 32349 32548 32550 32555 33455 35192 35193 36621 36623 36632 38355 38356 38962 40410 40447 40789 43633 43636 44267 44866 44995 45004 45545 45883 46389 46722 46723 46999 47149 47160 47187 47190 48283 48484https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/516/693?format=asciiOpticaldefaultJ/ApJ/516/693/table1Data for 57 pairs in the samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy Namemeta.id;meta.maincharPairThe galaxy paired with Namemeta.idcharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latVelRedshift velocitykm/sphys.veloc;src.redshiftinte_VelUncertainty in Velkm/sstat.errorintMTypeGalactic morphological typesrc.morph.type;pos.galacticcharBmagB band magnitudemagphot.mag;em.opt.BfloatLCSepLuminosity-corrected separationkpcpos.distance;phys.sizefloatLCVelLuminosity-corrected velocity differencekm/sphys.veloc;arith.difffloatM/LMass to light ratioSunphys.composition.massLightRatiofloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed