J/MNRAS/435/1186ivo://CDS.VizieR/J/MNRAS/435/1186doi:10.26093/cds/vizier.74351186CDSSachdeva S.2024-08-06T20:16:49Z2014-10-20T09:15:26ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrygalaxy-classification-systemsWe examine the magnitude and size evolution of bulgeless (discs with no-bulge or pseudo-bulge) galaxies up to z~0.9 in rest-frame B band. Their evolution is compared to that of normal-discs (or discs with classical bulge). The study is done for luminous sources (M_B_<=-20) in two equal-volume redshift bins (0.4<=z<0.77 and 0.77<=z<1.0) and a local range (0.02<=z<0.05). The mean surface-brightness, mu_B_, from z_mean_=0.89 to z_mean_=0.04, shows a dimming of 0.79mag/arcsec2 for bulgeless galaxies and 1.16mag/arcsec2 for normal-discs. The characteristic magnitude, M_B_, shows an increase of 0.55mag for bulgeless galaxies and 0.95mag for normal-discs. Both dimming and faintness observed since z~0.9 is more pronounced for the normal-discs by ~0.4mag. The size distribution is log-normal and both bulgeless and normal-discs show a slight increase in the mean value, <{Delta}log(R_e_)>~0.11, from z_mean_=0.89 to z_mean_=0.04. The proportion of bulgeless galaxies in the full disc sample undergoes a considerable decline with decrease in redshift. This along with the larger dimming and faintness seen for normal-discs suggests that some fraction of the bulgeless sources switch to the normal-disc morphology with time. To ascertain the validity of studying morphology in the optical, the properties of the galaxies observed in both rest-frame B and I band are compared. The common sample is more luminous in the I band but the sizes are larger in the B band for more than 74 percent of the sources. The variation in the Sersic-index values of the galaxies in the two rest-bands is minor enough to have any effect on the morphological classification.2013MNRAS.435.1186Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/435/1186CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/435/1186https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/435/1186http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/435/1186https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/435/1186https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/435/1186http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/435/1186GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/435/1186/catalogi (I-band catalogue (from HST/ACS F775W images))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/435/1186/catalogi?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/435/1186/catalogi?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/435/1186/catalogi?GETtext/xml+votable180.050000true52.9958975-27.70909330.005555555555555556Cone search capability for table J/MNRAS/435/1186/catalogb (Rest-frame B-band catalogue (from merged F606W, F775W and F850LP images))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/435/1186/catalogb?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/435/1186/catalogb?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/435/1186/catalogb?GETtext/xml+votable180.050000true52.9881603-27.70630610.0055555555555555566/35935 359572.5094373233074463e-19 2.655265855408273e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/435/1186?format=asciiOpticaldefaultJ/MNRAS/435/1186/catalogiI-band catalogue (from HST/ACS F775W images)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintbSimbad column added by the CDSmeta.ref.urlintnullableID[1/33912] Identification number <[S2013] NNNNN> in Simbadmeta.id;meta.mainintmagIntegrated-magnitude from sersic-fittingmagphot.mag;em.opt.Ifloate_mag? rms uncertainty on magmagstat.error;phot.magfloatnullablere? Half-light-radius in pixels from sersic-fittingpixphys.angSize;srcfloatnullablee_re? rms uncertainty on repixstat.errorfloatnullablen[0/10[? Sersic-index from sersic-fittingstat.fit.paramfloatnullablee_n? rms uncertainty on nstat.errorfloatnullableb/a[0/1] Axis-ratio from sersic-fittingphys.angSize;arith.ratiofloate_b/a? rms uncertainty on b/astat.errorfloatnullableRAJ2000Right-ascension of barycenter (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of barycenter (J2000)degpos.eq.dec;meta.mainzRedshift from COMBO-17 surveysrc.redshiftfloate_zrms uncertainty on z redshiftstat.error;src.redshiftfloatSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/435/1186/catalogbRest-frame B-band catalogue (from merged F606W, F775W and F850LP images)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintbSimbad column added by the CDSmeta.ref.urlintnullableID[1/33912] Identification number <[S2013] NNNNN> in Simbadmeta.id;meta.mainintmagIntegrated-magnitude from sersic-fittingmagphot.mag;em.opt.Bfloate_mag? rms uncertainty on magmagstat.error;phot.magfloatnullablere? Half-light-radius in pixels from sersic-fittingpixphys.angSize;srcfloatnullablee_re? rms uncertainty on repixstat.errorfloatnullablen[0/10[? Sersic-index from sersic-fittingstat.fit.paramfloatnullablee_n? rms uncertainty on nstat.errorfloatnullableb/a[0/1] Axis-ratio from sersic-fittingphys.angSize;arith.ratiofloate_b/a? rms uncertainty on b/astat.errorfloatnullableRAJ2000Right-ascension of barycenter (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of barycenter (J2000)degpos.eq.dec;meta.mainzRedshift from COMBO-17 surveysrc.redshiftfloate_zrms uncertainty on z redshiftstat.error;src.redshiftfloat