J/AJ/151/145ivo://CDS.VizieR/J/AJ/151/145doi:10.26093/cds/vizier.51510145CDSHerrmann K.A.Hunter D.A.Elmegreen B.G.2018-01-04T08:21:26Z2016-08-19T08:52:13ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrygalaxy-classification-systemsIn this second paper of a series, we explore the B-V, U-B, and FUV-NUV radial color trends from a multi-wavelength sample of 141 dwarf disk galaxies. Like spirals, dwarf galaxies have three types of radial surface brightness profiles: (I) single exponential throughout the observed extent (the minority), (II) down-bending (the majority), and (III) up-bending. We find that the colors of (1) Type I dwarfs generally become redder with increasing radius, unlike spirals which have a blueing trend that flattens beyond ~1.5 disk scale lengths, (2) Type II dwarfs come in six different "flavors", one of which mimics the "U" shape of spirals, and (3) Type III dwarfs have a stretched "S" shape where the central colors are flattish, become steeply redder toward the surface brightness break, then remain roughly constant beyond, which is similar to spiral Type III color profiles, but without the central outward bluing. Faint (-9>M_B_>-14) Type II dwarfs tend to have continuously red or "U" shaped colors and steeper color slopes than bright (-14>M_B_>-19) Type II dwarfs, which additionally have colors that become bluer or remain constant with increasing radius. Sm dwarfs and BCDs tend to have at least some blue and red radial color trend, respectively. Additionally, we determine stellar surface mass density ({Sigma}) profiles and use them to show that the break in {Sigma} generally remains in Type II dwarfs (unlike Type II spirals) but generally disappears in Type III dwarfs (unlike Type III spirals). Moreover, the break in {Sigma} is strong, intermediate, and weak in faint dwarfs, bright dwarfs, and spirals, respectively, indicating that {Sigma} may straighten with increasing galaxy mass. Finally, the average stellar surface mass density at the surface brightness break is roughly 1-2M_{Sun}_pc^-2^ for Type II dwarfs but higher at 5.9M_{Sun}_pc^-2^ or 27M_{Sun}_pc^-2^ for Type III BCDs and dIms, respectively.2016AJ....151..145Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/151/145CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/441/1992 : Galaxies with disc breaks in S4G and NIRS0S (Laine+, 2014)J/ApJ/771/59 : Surface brightness of S^4^G face-on galaxiesJ/AJ/146/104 : Dwarf gal. surface brightness profiles. I. (Herrmann+, 2013)J/AJ/144/134 : LITTLE THINGS survey of dwarf galaxies (Hunter+, 2012)J/AJ/142/145 : Outer disks of S0-Sb gal. II. (Gutierrez+, 2011)J/AJ/136/2563 : HI Nearby Galaxy Survey, THINGS (Walter+, 2008)J/ApJ/684/1026 : Photometric profiles from GOODS data (Azzollini+, 2008)J/ApJS/162/49 : UBV imaging of irregular galaxies (Hunter+, 2006)J/AJ/128/2170 : H{alpha} imaging of irregular galaxies (Hunter+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/151/145https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/151/145http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/151/145https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/151/145https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/151/145http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/151/145GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/151/145/table1 (Galaxy sample and color profile classifications)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/151/145/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/151/145/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/151/145/table1?GETtext/xml+votable180.050000true158.8462917-1.61908330.0055555555555555566/38 580 816 933 955 2377 2382 2866 3042 3389 3550 3567 3573 4126 4313 4522 4537 4554 4689 4691 4811 5168 5203 5241 5263 5283 5287 5607 5635 5636 5638 5978 6046 6072 6399 6419 6502 6560 6623 7022 7445 7523 7687 7769 7799 7878 7926 7956 7970 7984 8028 8425 8519 8548 8557 8908 9102 9855 9954 10344 10348 10380 10627 10689 10762 10767 10810 10881 10910 10970 10976 11019 11041 11045 11092 11120 11140 11143 11933 11965 12570 13326 13516 13668 16016 16845 17165 17777 17912 18041 18649 18676 19580 19656 19833 19851 19990 20271 20296 20400 22495 22949 23514 24111 25575 25705 25756 26302 26323 26411 26456 26518 26858 26871 27062 27351 27568 27604 27857 27911 27926 27948 28025 28100 28149 28510 28523 28610 28631 28636 28659 28666 29699 29718 33986 34050 36276 38846 41987 48942https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/151/145?format=asciiOpticaldefaultJ/AJ/151/145/table1Galaxy sample and color profile classificationsSimbadNameSimbad column added by the CDSmeta.idcharNEDnameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPapINumber of data in Paper I (Herrmann et al. 2013, Cat. J/AJ/146/104)meta.numberintnullableHE06Number of data in the original surveymeta.numberintnullableNameGalaxy identifiermeta.id;meta.maincharprimaryNpNumber of profiles (Table 4)meta.numberintnullableMTMorphological Hubble type (BCD, Im, or Sm) (1)src.morph.typecharBMag[-19/-9.11]? Absolute B band magnitude (2)magphys.magAbs;em.opt.Bfloatnullableb/a[0.21/1] Minor-to-Major axis ratio (3)phys.angSize;arith.ratiofloatTypeType of radial surface brightness profile (I, II, FI, or III) (4)meta.id;stat.fitcharCType1The (B-V) color profile classification (G1)src.class.colorcharf_CType1Outlier/Short flag for CType1 (O, S, or O/R) (5)meta.codecharCType2The (U-B) color profile classification (G1)src.class.colorcharf_CType2Outlier/Short flag for CType1 (O, S, O/R, or O/R,S) (5)meta.codecharCType3The (FUV-NUV) color profile classification (G1)src.class.colorcharf_CType3Outlier/Short flag for CType3 (O, S, or O/R) (5)meta.codecharNoteAdditional notes (6)meta.notecharLT[LT] Member of LITTLE THINGS survey (Hunter et al. 2012, Cat. J/AJ/144/134)meta.codecharT[T] Member of THINGS survey (Walter et al. 2008, Cat. J/AJ/136/2563)meta.codechar_RAPosition from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/AJ/151/145/table2Parameters of single and/or broken fits to color profiles (functions of radius in kiloparsecs)CTypeColor profile flavor (G1)src.class.colorcharColorColor used (U-B, B-V, or FUV-NUV)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy identifier (1)meta.id;meta.maincharRbrk[0.11/10.32] Surface brightness profile break location or scale length (2)kpcphys.size.radiusfloatmI[-0.41/1.95]? Single line fit color slopemag.arcsec**-2.kpc**-1phot.mag.sbfloatnullablee_mI[0.01/4.09]? Uncertainty in mImag.arcsec**-2.kpc**-1stat.errorfloatnullablebI[-0.95/0.71]? Single line color fit y intercept (3)mag.arcsec**-2phot.mag.sbfloatnullablee_bI[0.018/0.8]? Uncertainty in bImag.arcsec**-2stat.errorfloatnullablemi[-4.32/1.38]? Inner fit color slopemag.arcsec**-2.kpc**-1phot.mag.sbfloatnullablee_mi[0.001/5.05]? Uncertainty in mimag.arcsec**-2.kpc**-1stat.errorfloatnullablebi[-0.86/1.19]? Inner color fit y intercept (3)mag.arcsec**-2phot.mag.sbfloatnullablee_bi[0.001/0.7]? Uncertainty in bimag.arcsec**-2stat.errorfloatnullablemo[-2.12/8.5]? Outer fit color slopemag.arcsec**-2.kpc**-1phot.mag.sbfloatnullablee_mo[0/6.75]? Uncertainty in momag.arcsec**-2.kpc**-1stat.errorfloatnullablebo[-2.62/3.56]? Outer color fit y intercept (3)mag.arcsec**-2phot.mag.sbfloatnullablee_bo[0.001/3.3]? Uncertainty in bomag.arcsec**-2stat.errorfloatnullableJ/AJ/151/145/table3*Parameters of fits to average profiles (functions of scaled radii)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCTypeColor profile flavor (1)src.class.colorcharProfileProfile type (U-B, B-V, {mu}_V_, log {Sigma}, or FUV-NUV)meta.id;stat.fitDefDefault type (Brk, Sgl, or 2B) (2)meta.id;stat.fitcharmI[-1.35/1.11]? Single line fit slope (3)phot.mag.sbfloatnullablee_mI[0.002/0.19]? Uncertainty in mIstat.errorfloatnullablebI[-0.56/22.45]? Single line fit y intercept (3)phot.mag.sbfloatnullablee_bI[0/0.32]? Uncertainty in bIstat.errorfloatnullablemi[-2.11/5.3]? Inner fit slope (3)phot.mag.sbfloatnullablee_mi[0/0.06]? Uncertainty in mistat.errorfloatnullablebi[-0.58/23.86]? Inner fit y intercept (3)phot.mag.sbfloatnullablee_bi[0/0.03]? Uncertainty in bistat.errorfloatnullablemo[-1.71/4.76]? Outer fit slope (3)phot.mag.sbfloatnullablee_mo[0/0.09]? Uncertainty in mostat.errorfloatnullablebo[-0.69/22.43]? Outer fit y intercept(3)phot.mag.sbfloatnullablee_bo[0/0.12]? Uncertainty in bostat.errorfloatnullable