Barred galaxies structural decomposition J/MNRAS/473/4731 ivo://CDS.VizieR/J/MNRAS/473/4731 doi:10.26093/cds/vizier.74734731 CDS Kruk S.J. Lintott C.J. Bamford S.P. Masters K.L. Simmons B.D.,Haussler B. Cardamone C.N. Hart R.E. Kelvin L. Schawinski K.,Smethurst R.J. Vika M. 2024-08-18T20:16:54Z 2021-02-10T15:15:03Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr galaxies photometry galaxy-classification-systems We present the results of two-component (disc+bar) and three-component (disc+bar+bulge) multiwavelength 2D photometric decompositions of barred galaxies in five Sloan Digital Sky Survey (SDSS) bands (ugriz). This sample of ~3500 nearby (z<0.06) galaxies with strong bars selected from the Galaxy Zoo citizen science project is the largest sample of barred galaxies to be studied using photometric decompositions that include a bar component. With detailed structural analysis, we obtain physical quantities such as the bar- and bulge-to-total luminosity ratios, effective radii, Sersic indices and colours of the individual components. We observe a clear difference in the colours of the components, the discs being bluer than the bars and bulges. An overwhelming fraction of bulge components have Sersic indices consistent with being pseudo-bulges. By comparing the barred galaxies with a mass-matched and volume-limited sample of unbarred galaxies, we examine the connection between the presence of a large-scale galactic bar and the properties of discs and bulges. We find that the discs of unbarred galaxies are significantly bluer compared to the discs of barred galaxies, while there is no significant difference in the colours of the bulges. We find possible evidence of secular evolution via bars that leads to the build-up of pseudo-bulges and to the quenching of star formation in the discs. We identify a subsample of unbarred galaxies with an inner lens/oval and find that their properties are similar to barred galaxies, consistent with an evolutionary scenario in which bars dissolve into lenses. This scenario deserves further investigation through both theoretical and observational work. 2018MNRAS.473.4731K https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/473/4731 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to J/MNRAS/435/2835 : Morphological types from Galaxy Zoo 2 (Willett+, 2013) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/473/4731 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/473/4731 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/473/4731 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/473/4731 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/473/4731 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/473/4731 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/473/4731/table2 (Structural parameters of discs, bars and bulges for the 3461 galaxies fitted with disc+bar or disc+bar+bulge components) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/473/4731/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/473/4731/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/473/4731/table2? 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28526-28527 28529 28532 28536 28538-28539 28548-28549 28552 28554 28558 28560 28563 28565 28568-28569 28577-28580 28585-28586 28589 28592 28603 28610 28612 28614-28616 28620 28623-28625 28630 28636 28642-28645 28647 28649-28650 28653-28654 28660 28662-28663 28669 30031 30035-30036 30038 30041 30043 31290-31291 31354 31366 31373 31377 31383-31385 31393 31395 31397 31403 31407 31415 31418-31419 31422 31435 31438 31443 31446 31448 31451 31453-31455 31462 31468-31470 31472 31474 31480-31481 31483-31484 31486 31530 31550 31620 31626 31629 31631 31638 31641 31643 31647 31649-31650 31658-31659 31670 31673-31678 31693 31695 31698 31714-31717 31720-31721 31723 31726-31727 31730-31731 31735 32399 32410 32415 32429 32431 32436 32439-32442 32482 32486 32491-32492 32683 32686 36861 40957 45039 45047 45051 45055 49150-49151 2.040811542443644e-19 6.090060298487514e-19 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/473/4731?format=ascii Optical default J/MNRAS/473/4731/table2 Structural parameters of discs, bars and bulges for the 3461 galaxies fitted with disc+bar or disc+bar+bulge components SimbadName Simbad column added by the CDS meta.id char nullable re-bulge ? Bulge effective radius pix phys.angSize float nullable recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS DR8 objid meta.id;meta.main Comp Fit components (disc+bar or disc+bar+bulge) meta.id;stat.fit.param char u-disc Disc integrated SDSS u magnitude (1) mag phot.mag;em.opt.U float g-disc Disc integrated SDSS g magnitude (1) mag phot.mag;em.opt.B float r-disc Disc integrated SDSS r magnitude (1) mag phot.mag;em.opt.R float i-disc Disc integrated SDSS i magnitude (1) mag phot.mag;em.opt.I float z-disc Disc integrated SDSS z magnitude (1) mag phot.mag;em.opt.I float n-disc Disc Sersic index stat.fit.param float re-disc Disc effective radius pix phys.angSize float ba-disc Disc axis ratio b/a from the multiband fits phys.size.axisRatio float u-bar Bar integrated SDSS u magnitude (1) mag phot.mag;em.opt.U float g-bar Bar integrated SDSS g magnitude (1) mag phot.mag;em.opt.B float r-bar Bar integrated SDSS r magnitude (1) mag phot.mag;em.opt.R float i-bar Bar integrated SDSS i magnitude (1) mag phot.mag;em.opt.I float z-bar Bar integrated SDSS z magnitude (1) mag phot.mag;em.opt.I float n-bar Bar Sersic index stat.fit.param float re-bar Bar effective radius pix phys.angSize float ba-bar Bar axis ratio b/a from the multiband fits phys.size.axisRatio float u-bulge ? Bulge integrated SDSS u magnitude (1) mag phot.mag;em.opt.U float nullable g-bulge ? Bulge integrated SDSS g magnitude (1) mag phot.mag;em.opt.B float nullable r-bulge ? Bulge integrated SDSS g magnitude (1) mag phot.mag;em.opt.R float nullable i-bulge ? Bulge integrated SDSS i magnitude (1) mag phot.mag;em.opt.I float nullable z-bulge ? Bulge integrated SDSS z magnitude (1) mag phot.mag;em.opt.I float nullable n-bulge ? Bulge Sersic index stat.fit.param float nullable ba-bulge ? Bulge axis ratio b/a from the multiband fits phys.size.axisRatio float nullable Sloan Display the SDSS data for this galaxy meta.ref.url char _RA Positions from SDSS DR8 (right ascension part) deg pos.eq.ra;meta.main _DE Positions from SDSS DR8 (declination part) deg pos.eq.dec;meta.main
J/MNRAS/473/4731/table3 Properties of the galaxies fitted with disc+bar or disc+bar+bulge component recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS DR8 objid meta.id;meta.main z SDSS DR7 redshift src.redshift float RMAG SDSS DR7 r-band Petrosian absolute magnitude phys.magAbs float logMass Stellar mass (1) log(solMass) phys.mass float p-bar Debiased bar likelihood (2) stat.likelihood float D/Tu Disc-to-total luminosity ratio in SDSS u band phys.luminosity;arith.ratio float D/Tg Disc-to-total luminosity ratio in SDSS g band phys.luminosity;arith.ratio float D/Tr Disc-to-total luminosity ratio in SDSS r band phys.luminosity;arith.ratio float D/Ti Disc-to-total luminosity ratio in SDSS i band phys.luminosity;arith.ratio float D/Tz Disc-to-total luminosity ratio in SDSS z band phys.luminosity;arith.ratio float Bar/Tu Bar-tp-total luminosity ratio in SDSS u band phys.luminosity;arith.ratio float Bar/Tg Bar-tp-total luminosity ratio in SDSS g band phys.luminosity;arith.ratio float Bar/Tr Bar-tp-total luminosity ratio in SDSS r band phys.luminosity;arith.ratio float Bar/Ti Bar-tp-total luminosity ratio in SDSS i band phys.luminosity;arith.ratio float Bar/Tz Bar-tp-total luminosity ratio in SDSS z band phys.luminosity;arith.ratio float B/Tu ? Bulge-to-total luminosity ratio in SDSS u band phys.luminosity;arith.ratio float nullable B/Tg ? Bulge-to-total luminosity ratio in SDSS g band phys.luminosity;arith.ratio float nullable B/Tr ? Bulge-to-total luminosity ratio in SDSS r band phys.luminosity;arith.ratio float nullable B/Ti ? Bulge-to-total luminosity ratio in SDSS i band phys.luminosity;arith.ratio float nullable B/Tz ? Bulge-to-total luminosity ratio in SDSS z band phys.luminosity;arith.ratio float nullable u-r-disc Disc SDSS u-r colour index (3) mag phot.color;em.opt.U;em.opt.R float u-r-bar Bar SDSS u-r colour index (3) mag phot.color;em.opt.U;em.opt.R double u-r-bulge ? Bulge SDSS u-r colour index (3) mag phot.color;em.opt.U;em.opt.R double nullable g-i-disc Disc SDSS g-i colour index (3) mag phot.color;em.opt.B;em.opt.I float g-i-bar Bar SDSS g-i colour index (3) mag phot.color;em.opt.B;em.opt.I double g-i-bulge ? Bulge SDSS g-i colour index (3) mag phot.color;em.opt.B;em.opt.I float nullable r-z-disc Disc SDSS r-z colour index (3) mag phot.color;em.opt.R;em.opt.I float r-z-bar Bar SDSS r-z colour index (3) mag phot.color;em.opt.R;em.opt.I double r-z-bulge ? SDSS Bulge r-z colour index (3) mag phot.color;em.opt.R;em.opt.I float nullable chi2 Reduced chi^2^ value of the fit stat.fit.chi2;stat.fit.param;meta.modelled float Sloan Display the SDSS data for this galaxy meta.ref.url char