J/AJ/108/1987ivo://CDS.VizieR/J/AJ/108/1987doi:10.26093/cds/vizier.51081987CDSAlonso M.V.da Costa L.N.Latham D.W.Pellegrini P.S.Milone A.A.E.2023-04-06T16:50:08Z1997-12-09T20:20:02ZCDS support team

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

cds-question@unistra.frgalaxiesvisible-astronomynorth-galactic-poleccd-photometryapparent-magnitudeIn this paper we continue our investigation on the isophotal nature, accuracy, and uniformity of the magnitude system adopted in the Southern Sky Redshift Survey extension (SSRS2). Extending our earlier work, we examine galaxies in the equatorial region, primarily in the declination range -17.5 deg <= Dec. <= 0 deg, over a large range of right ascension, covering the southern and northern Galactic caps. For this purpose, we have obtained CCD isophotal magnitudes in the B and R bands for 265 galaxies of different morphological types. Using this larger sample we confirm our earlier claim that the m(SSRS2) magnitudes are very nearly the magnitude measured within the isophote mu_B = 26 mag/arcsec^2, with a dispersion of about 0.30 mag. The relative zero-point offset between our m(SSRS2) magnitudes and CCD photometry is -0.02 mag from all data we have obtained. However, we detect a variation of the zero-point across different regions of the sky of +/- 0.10 mag for regions at large angular separations. We also estimate that the zero-point offset between the m(SSRS2) and Zwicky systems is relatively small (~0.10 mag), which should allow us to combine the data from the SSRS2 and the CfA2 Redshift Survey.1994AJ....108.1987Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/108/1987CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/108/1987https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/108/1987http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/108/1987https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/108/1987https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/108/1987http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/108/1987GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/108/1987/table1 (Galaxy sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/108/1987/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/108/1987/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/108/1987/table1?GETtext/xml+votable180.050000true0.645162-3.711030.0055555555555555565/10167 6/16852 16862 16871 16879 16881 17017 17023 17134 17149 17159 17172 17197 17213 17216 17233 17235 17237 17286 17393 17428 17440 17459 17462 17472 17486 17491-17492 17566 17606 17612 17638 17671-17672 17688 17794 17927 17944 17968 18002 18054 18465 18484 18507 18536 18557 18567-18568 18611 18621 18652 18665 18669 18689 18709 18714 18742 18745 18759-18761 18794 18854 18992 19019 19104 21181 21224 22545 22605 22651 22654 22661 22710 22721 22733 22737 22740 22745-22746 23077 23088 23171 23178 24920 24922 24952 24957 25044 25050 25080 25083 25203 25238 25263 25309 25312 25319 25322 25324 25328 25356 25362 25368 25399 25401 25415 25418 25431 25439 25444 25460 25476 25497-25498 25523 25575 25582 25613 25638 25657 25663 25710-25711 25715 25726 25747 25770 25774 25784 25793 25809 25862 25875 25889 25907 25960 26121 26136 26651 26664 26677 26709 26713 26726 26730 26741 26758 26801 26829 26835 27150-27151 27162 27173 29788 29795 30005 30020 30027 30044 30062 30970 31313 31360 31365 36211 36287 36472 36618 36622 36632 36646 36648 36652 36659 36662 36666 36708 36713 36734 36749 36769 36796-36797 36819 36831 36853 40252 40287 40307 40310 40316 40404 40447 40665 40683 40687 40695 40722-40723 40789 40812 40840 40875 40946 44460-44461 44472 44627 44636-44638 44738 44801 44808 44822 44844 44866 44875 44896 44898 44945 44955 48502 48605 48745 48902 48922 48939 48945 48967 49010 49043 49054 49063 49080 49092 49109 491304.0234554602041486e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/108/1987?format=asciiOpticaldefaultJ/AJ/108/1987/table1Galaxy samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyName of the galaxymeta.id;meta.maincharStScISpace Telescope Science Institute Id.meta.id;phys.veloc;instr.telcharRA1950Right ascension 1950.0pos.eq.ra;meta.mainDE1950Declination 1950.0pos.eq.dec;meta.mainType[]? Morph. type, Corwin 1993, private comm.src.morph.typeintnullablemSSRS2[]? SSRS2 magnitudemagphot.mag;em.opt.BfloatnullablemMCG[]? Morphological Cat. of Galaxies magnitudemagphot.mag;em.opt.BfloatnullableNoteNote flagsmeta.codechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexedJ/AJ/108/1987/notes1Notes to table 1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteText of note for object marked with '*' in field 'Note' in table1.datmeta.notecharJ/AJ/108/1987/table2Isophotal magnitudes for observed galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyName of the galaxymeta.id;meta.maincharDateObservation datetime.epoch;obscharmB26CCD magnitude m_B(26)magphot.mag;em.opt.Bfloate_mB26Associated error in mB26magstat.errorfloatmR26CCD magnitude m_R(26)magphot.mag;em.opt.Rfloate_mR26Associated error in mR26magstat.errorfloatmuBlimLimiting blue isophote, mu_{B,lim}meta.notefloatmuRlimLimiting red isophote, mu_{R,lim}meta.notefloat