J/AJ/127/704ivo://CDS.VizieR/J/AJ/127/704doi:10.26093/cds/vizier.51270704CDSKniazev A.Y.Grebel E.K.Pustilnik S.A.Pramskij A.G.Kniazeva T.F.,Prada F.Harbeck D.2023-04-06T16:51:06Z2006-03-25T11:28:11ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryvisible-astronomysloan-photometrysurface-photometryIn this paper we present results of a pilot study to use imaging data from the Sloan Digital Sky Survey (SDSS) to search for low surface brightness (LSB) galaxies. For our pilot study we use a test sample of 92 galaxies from the Impey et al. catalog distributed over 93 SDSS fields of the Early Data Release (EDR, <J/AJ/123/567>). Many galaxies from the test sample are either LSB or dwarf galaxies. To deal with the SDSS data most effectively, a new photometry software was created, which is described in this paper. We present the results of the selection algorithms applied to these 93 EDR fields. Two galaxies from the Impey et al. (1996, <J/ApJS/105/209>) test sample are very likely artifacts, as confirmed by follow-up imaging. With our algorithms we were able to recover 87 of the 90 remaining test sample galaxies, implying a detection rate of ~96.5%. The three missed galaxies fall too close to very bright stars or galaxies. In addition, 42 new galaxies with parameters similar to the test sample objects were found in these EDR fields (i.e.,~47% additional galaxies). We present the main photometric parameters of all identified galaxies and carry out first statistical comparisons. We tested the quality of our photometry by comparing the magnitudes for our test sample galaxies and other bright galaxies with values from the literature. All these tests yielded consistent results. We briefly discuss a few unusual galaxies found in our pilot study, including an LSB galaxy with a two-component disk and 10 new giant LSB galaxies.2004AJ....127..704Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/704CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002)J/ApJS/105/209 : Low surface brightness galaxies. I. The catalog (Impey+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/127/704https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/127/704http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/127/704https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/127/704https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/127/704http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/127/704GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/127/704/catalog (Catalog of large-angular-size galaxies identified in the fields of the test subsample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/704/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/704/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/704/catalog?GETtext/xml+votable180.050000true147.9450.33058060.0055555555555555565/6486 6566 6/25597 25853 25855 25939 25957 25968 26003 26006 26008-26009 26012 26024 26032 26199-26200 26202-26204 26214-26217 26220 26225 26253 26255 26259 26270 26273 26275 26277 26284-26286 26289-26290 26368 26877 26943 26958 26977 26980 26982 26987-26988 27030-27031 27041 27045-27046 27048-27049 27072-27074 27227 27236-27237 27239 272432.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/127/704?format=asciiOpticaldefaultJ/AJ/127/704/catalogCatalog of large-angular-size galaxies identified in the fields of the test subsampleSDSScolSDSS image columnmeta.id;instrintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning identification numbermeta.idintSDSSSDSS name (1)meta.id;meta.maincharprimaryn_SDSSindicates that more photometric parameters are accessible in the other tablesmeta.refcharISI96Impey et al. (1996, J/ApJS/105/209) name (2)meta.idcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainSDSSrunSDSS image run numbermeta.id;obsintSDSSfieldSDSS image fieldobs.fieldintBmagApparent B band magnitude (3)magphot.mag;em.opt.Bfloate_BmagError in Bmag (3)magstat.errorfloatB-V(B-V) color (4)magphot.color;em.opt.B;em.opt.VfloatBMAG? Absolute B band magnitude (5)magphys.magAbs;em.opt.BfloatnullableHRV? Heliocentric velocity (6)km/sphys.veloc;pos.heliocentricintnullableMTypeMorphological classification (7)src.morph.typecharONameOther NED namesmeta.idcharSDSSdataDisplay the SDSS data for this galaxymeta.refcharu*mag? SDSS u* band integrated magnitudemagphot.mag;em.opt.Ufloatnullablee_u*mag? Error in u*magmagstat.errorfloatnullableg*magSDSS g* band integrated magnitudemagphot.mag;em.opt.Bfloate_g*magError in g*magmagstat.errorfloatr*magSDSS r* band integrated magnitudemagphot.mag;em.opt.Rfloate_r*magError in r*magmagstat.errorfloati*magSDSS i* band integrated magnitudemagphot.mag;em.opt.Ifloate_i*magError in i*magmagstat.errorfloatz*magSDSS z* band integrated magnitudemagphot.mag;em.opt.Ifloate_z*magError in z*magmagstat.errorfloatb/aAxis ratiophys.size.axisRatiofloatPA[-90/90] Position angledegpos.posAngintReffr band effective radiusarcsecphys.angSize;srcfloatmueff(r)r band mean surface brightness inside Reffmag.arcsec**-2phot.mag.sb;em.opt.RfloatCIr band concentration indexphys.size;arith.ratiofloatA26.2r band size at SB=26.2mag/arcsec^2^arcsecphys.angSizefloatJ/AJ/127/704/table3Model-dependent photometric parameters of large-angular-size galaxies identified in the test fieldsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (G1)meta.id;meta.maincharmu0d(g*)g* band disk surface brightnessmag.arcsec**-2phot.mag.sbfloate_mu0d(g*)Error in mu0d(g*)mag.arcsec**-2stat.errorfloatalphad(g*)g* band disk scale lengtharcsecphys.angSize;srcfloate_alphad(g*)Error in alphad(g*)arcsecstat.errorfloatmu0b(g*)? g* band bulge surface brightnessmag.arcsec**-2phot.mag.sbfloatnullablee_mu0b(g*)? Error in mu0b(g*)mag.arcsec**-2stat.errorfloatnullablealphab(g*)? g* band bulge scale lengtharcsecphys.angSize;srcfloatnullablee_alphab(g*)? Error in alphab(g*)arcsecstat.errorfloatnullablemu0d(r*)r* band disk surface brightnessmag.arcsec**-2phot.mag.sb;em.opt.Rfloate_mu0d(r*)Error in mu0d(r*)mag.arcsec**-2stat.errorfloatalphad(r*)r* band disk scale lengtharcsecphys.angSize;srcfloate_alphad(r*)Error in alphad(r*)arcsecstat.errorfloatmu0b(r*)? r* band bulge surface brightnessmag.arcsec**-2phot.mag.sb;em.opt.Rfloatnullablee_mu0b(r*)? Error in mu0b(r*)mag.arcsec**-2stat.errorfloatnullablealphab(r*)? r* band bulge scale lengtharcsecphys.angSize;srcfloatnullablee_alphab(r*)? Error in alphab(r*)arcsecstat.errorfloatnullablemu0d(i*)i* band disk surface brightnessmag.arcsec**-2phot.mag.sb;em.opt.Ifloate_mu0d(i*)Error in mu0d(i*)mag.arcsec**-2stat.errorfloatalphad(i*)i* band disk scale lengtharcsecphys.angSize;srcfloate_alphad(i*)Error in alphad(i*)arcsecstat.errorfloatmu0b(i*)? i* band bulge surface brightnessmag.arcsec**-2phot.mag.sb;em.opt.Ifloatnullablee_mu0b(i*)? Error in mu0b(i*)mag.arcsec**-2stat.errorfloatnullablealphab(i*)? i* band bulge scale lengtharcsecphys.angSize;srcfloatnullablee_alphab(i*)? Error in alphab(i*)arcsecstat.errorfloatnullableJ/AJ/127/704/table4Model-dependent photometric parameters of large-angular-size galaxies with Sersic profiles identified in the test fieldse_n(i*)rms uncertainty on n(i*)stat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (G1)meta.id;meta.maincharmu0(g*)g* band surface brightnessmag.arcsec**-2phot.mag.sbfloate_mu0(g*)rms uncertainty on mu0(g*)mag.arcsec**-2stat.errorfloatalpha(g*)g* band scale lengtharcsecphys.angSize;srcfloate_alpha(g*)rms uncertainty on alpha(g*)arcsecstat.errorfloatn(g*)g* band Sersic numberstat.fit.paramfloate_n(g*)rms uncertainty on n(g*)stat.errorfloatmu0(r*)r* band surface brightnessmag.arcsec**-2phot.mag.sb;em.opt.Rfloate_mu0(r*)rms uncertainty on mu0(r*)mag.arcsec**-2stat.errorfloatalpha(r*)r* band scale lengtharcsecphys.angSize;srcfloate_alpha(r*)rms uncertainty on alpha(r*)arcsecstat.errorfloatn(r*)r* band Sersic numberstat.fit.paramfloate_n(r*)rms uncertainty on n(r*)stat.errorfloatmu0(i*)i* band surface brightnessmag.arcsec**-2phot.mag.sb;em.opt.Ifloate_mu0(i*)rms uncertainty on mu0(i*)mag.arcsec**-2stat.errorfloatalpha(i*)i* band scale lengtharcsecphys.angSize;srcfloate_alpha(i*)rms uncertainty on alpha(i*)arcsecstat.errorfloatn(i*)i* band Sersic numberstat.fit.paramfloatJ/AJ/127/704/table5The photometric repeatabilityrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (G1)meta.id;meta.maincharu*magu* magnitudemagphot.mag;em.opt.Ufloate_u*magrms uncertainty on u*magmagstat.errorfloatg*magg* magnitudemagphot.mag;em.opt.Bfloate_g*magrms uncertainty on g*magmagstat.errorfloatr*magr* magnitudemagphot.mag;em.opt.Rfloate_r*magrms uncertainty on r*magmagstat.errorfloati*magi* magnitudemagphot.mag;em.opt.Ifloate_i*magrms uncertainty on i*magmagstat.errorfloatz*magz* magnitudemagphot.mag;em.opt.Ifloate_z*magrms uncertainty on u*magmagstat.errorfloatJ/AJ/127/704/table6Giant LSB spiral galaxies from our samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (G1)meta.id;meta.maincharISI96Impey et al. (1996, <J/ApJS/105/209>) namemeta.idcharBMAGdDisk absolute B magnitudemagphys.magAbsfloatmu0c(B)Central Surface brightness in B bandmag.arcsec**-2phot.mag.sb;em.opt.BfloatalphaScale lengthkpcphys.angSize;srcfloatDIndexDiffuseness index [mu0c(B)+5log(alpha)]float