J/A+A/433/497ivo://CDS.VizieR/J/A+A/433/497doi:10.26093/cds/vizier.34330497CDSRampazzo R.Annibali F.Bressan A.Longhetti M.Padoan F.,Zeilinger W.W.2017-09-19T14:20:48Z2007-02-22T18:44:37ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyline-intensitiesWith the aim of building a data-set of spectral properties of well studied early-type galaxies showing emission lines, we present intermediate resolution spectra of 50 galaxies in the nearby Universe. The sample, which covers several of the E and S0 morphological sub-classes, is biased toward objects that might be expected to have ongoing and recent star formation, at least in small amounts, because of the presence of the emission lines. The emission is expected to come from the combination of active galactic nuclei and star formation regions within the galaxies. Sample galaxies are located in environments corresponding to a broad range of local galaxy densities, although predominantly in low density environments. Our long-slit spectra cover the 3700-7250{AA} wavelength range with a spectral resolution of approximately 7.6{AA} at 5550{AA}. The specific aim of this paper, and our first step in the investigation, is to map the underlying galaxy stellar population by measuring, along the slit positioned along the galaxy major axis, line-strength indices at several, homogeneous galacto-centric distances. For each object we extracted 7 luminosity-weighted apertures (with radii 1.5", 2.5", 10", r_e/10_, r_e/8_, r_e/4_ and r_e/2_) corrected for the galaxy ellipticity and 4 gradients (0<r<r_e/16_, r_e/16_<r<r_e/8_, r_e/8_<r<r_e/4_ and r_e/4_<r<r_e/2_). For each aperture and gradient we measured 25 line-strength indices: 21 of the set defined by the Lick-IDS ``standard'' system (Trager et al., 1998, Cat. J/ApJS/116/1) and 4 introduced by Worthey & Ottaviani (1997, Cat. J/ApJS/111/377). Line-strength indices have been transformed to the Lick-IDS system. Indices derived then include H{beta}, Mg_1_, Mg_2_, Mgb, MgFe, Fe5270, Fe5335 commonly used in classic index-index diagrams. The paper introduces the sample, presents the observations, describes the data reduction procedures, the extraction of apertures and gradients, the determination and correction of the line-strength indices, the procedure adopted to transform them into the Lick-IDS System and the procedures adopted for the emission correction. We finally discuss the comparisons between our dataset and line-strength indices available in the literature. A significant fraction, about 60%, of galaxies in the present sample has one previous measurement in the Lick-IDS system but basically restricted within the r_e/8_ region. Line-strength measures obtained both from apertures and gradients outside this area and within the r_e/8_ region, with the present radial mapping, are completely new.2005A&A...433..497Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/433/497CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/445/79 : Nearby early-type gal. with ionized gas. II (Annibali+, 2006)J/A+A/463/455 : Nearby early-type gal. with ionized gas. III (Annibali+ 2007)J/A+A/519/A40 : Nearby early-type gal. with ionized gas. IV (Annibali+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/433/497https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/433/497http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/433/497https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/433/497https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/433/497http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/433/497GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/433/497/table1 (Overview of the observed sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/433/497/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/433/497/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/433/497/table1?GETtext/xml+votable180.050000true7.3129172.8638890.0055555555555555566/2142 4188 4520 8196 13336 17032 18103 23088 25383 25647 26091 26313 27186 27367 27936 28200 28221 33271 33802 33954 34521 34534 34540 35923 36153 36172 36247 36261 36632 36785 37266 38347 38693 38704 43700 43806 43891 44247 45469 45636 45883 46017 46568 46738 46740 46811 47157 47386 47409 48160https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/433/497?format=asciiOpticaldefaultJ/A+A/433/497/table1Overview of the observed samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy designationmeta.id;meta.maincharprimaryRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainMType(RSA)Morphological type from RSA (Cat. VII/51)src.morph.typecharMType(RC3)Morphological type from RC3 (Cat. VII/155)src.morph.typecharPA? Position angle of the isophotesdegpos.posAngintnullableB0magTotal corrected blue magnitudemagphot.mag;em.opt.BfloatB-V? Total corrected (B-V) colormagphot.color;em.opt.B;em.opt.VfloatnullableU-B? Total corrected (U-B) colormagphot.color;em.opt.U;em.opt.BfloatnullableVelHeliocentric systemic velocity (from Hypercat)km/sphys.veloc;pos.heliocentricintreEffective radiusarcminphys.angSizefloatrho? Richness of the environment (gal.Mpc^-3^)Mpc**-3src.class.richnessfloatnullableepsAverage ellipticity (1-b/a)src.ellipticity;stat.meanfloatSimbadSimbad column added by the CDScharNEDSimbad column added by the CDScharLEDASimbad column added by the CDScharJ/A+A/433/497/table6H{beta} corrections for aperturesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy designationmeta.id;meta.maincharApertureAperture code (G1)meta.codeintEWO[III]Equivalent width [OIII]0.1nmspect.line.eqWidth;em.line.OIIIfloatQualQuality of the measure (G1)meta.code.qualintEWH{alpha}Equivalent width H{alpha}0.1nmspect.line.eqWidth;em.line.HalphafloatJ/A+A/433/497/table7H{beta} corrections for gradientsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy designationmeta.id;meta.maincharGradientGradient code (G1)meta.codeintEWO[III]Equivalent width [OIII]0.1nmspect.line.eqWidth;em.line.OIIIfloatQualQuality of the measure (G1)meta.code.qualintEWH{alpha}Equivalent width H{alpha}0.1nmspect.line.eqWidth;em.line.HalphafloatJ/A+A/433/497/table9Fully corrected Line-strength indices for the aperturesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy designationmeta.id;meta.mainchariz[0/6] Indicates the aperture (table9) or the gradient (table10) code (G2)meta.codeintr1Relative aperture radius (lower limit)pos.angDistancefloatr2Relative aperture radius (upper limit)pos.angDistancefloatrwlLuminosity weighted radiuspos.angDistancefloatreqAdopted equivalent radiusarcsecphys.angSize;srcfloatCN1Line-strength index of CN1magphot.colorfloatCN2Line-strength index of CN2magphot.colorfloatCa4227Line-strength index of Ca42270.1nmmeta.code;spect.indexfloatG4300Line-strength index of G43000.1nmmeta.code;spect.indexfloatFe4383Line-strength index of Fe43830.1nmmeta.code;spect.indexfloatCa4455Line-strength index of Ca44550.1nmmeta.code;spect.indexfloatFe4531Line-strength index of Fe45310.1nmmeta.code;spect.indexfloatFe4668Line-strength index of Fe46680.1nmmeta.code;spect.indexfloatHbetaLine-strength index of H{beta}0.1nmspect.index;em.line.HbetafloatFe5015Line-strength index of Fe50150.1nmmeta.code;spect.indexfloatMg1Line-strength index of Mg1magphot.colorfloatMg2Line-strength index of Mg2magphot.colorfloatMgbLine-strength index of Mgb0.1nmmeta.code;spect.indexfloatFe5270Line-strength index of Fe52700.1nmmeta.code;spect.indexfloatFe5335Line-strength index of Fe53350.1nmmeta.code;spect.indexfloatFe5406Line-strength index of Fe54060.1nmmeta.code;spect.indexfloatFe5709Line-strength index of Fe57090.1nmmeta.code;spect.indexfloatFe5782Line-strength index of Fe57820.1nmmeta.code;spect.indexfloatNaDLine-strength index of NaD0.1nmmeta.code;spect.indexfloatTiO1Line-strength index of TiO1magphot.colorfloatTiO2Line-strength index of TiO2magphot.colorfloatHdeltaALine-strength index of H{delta}A0.1nmspect.indexfloatHgammaALine-strength index of H{gamma}A0.1nmspect.index;em.line.HgammafloatHdeltaFLine-strength index of H{delta}F0.1nmspect.indexfloatHgammaFLine-strength index of H{gamma}F0.1nmspect.index;em.line.Hgammafloate_CN1Error on Line-strength index of CN1magstat.errorfloate_CN2Error on Line-strength index of CN2magstat.errorfloate_Ca4227Error on Line-strength index of Ca42270.1nmstat.errorfloate_G4300Error on Line-strength index of G43000.1nmstat.errorfloate_Fe4383Error on Line-strength index of Fe43830.1nmstat.errorfloate_Ca4455Error on Line-strength index of Ca44550.1nmstat.errorfloate_Fe4531Error on Line-strength index of Fe45310.1nmstat.errorfloate_Fe4668Error on Line-strength index of Fe46680.1nmstat.errorfloate_HbetaError on Line-strength index of H{beta}0.1nmstat.error;spect.line.intensity;em.line.Hbetafloate_Fe5015Error on Line-strength index of Fe50150.1nmstat.errorfloate_Mg1Error on Line-strength index of Mg1magstat.errorfloate_Mg2Error on Line-strength index of Mg2magstat.errorfloate_MgbError on Line-strength index of Mgb0.1nmstat.errorfloate_Fe5270Error on Line-strength index of Fe52700.1nmstat.errorfloate_Fe5335Error on Line-strength index of Fe53350.1nmstat.errorfloate_Fe5406Error on Line-strength index of Fe54060.1nmstat.errorfloate_Fe5709Error on Line-strength index of Fe57090.1nmstat.errorfloate_Fe5782Error on Line-strength index of Fe57820.1nmstat.errorfloate_NaDError on Line-strength index of NaD0.1nmstat.errorfloate_TiO1Error on Line-strength index of TiO1magstat.errorfloate_TiO2Error on Line-strength index of TiO2magstat.errorfloate_HdeltaAError on Line-strength index of H{delta}A0.1nmstat.errorfloate_HgammaAError on Line-strength index of H{gamma}A0.1nmstat.errorfloate_HdeltaFError on Line-strength index of H{delta}F0.1nmstat.errorfloate_HgammaFError on Line-strength index of H{gamma}F0.1nmstat.errorfloatJ/A+A/433/497/table10Fully corrected Line-strength indices for the gradientsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy designationmeta.id;meta.mainchariz[0/6] Indicates the aperture (table9) or the gradient (table10) code (G2)meta.codeintr1Relative aperture radius (lower limit)pos.angDistancefloatr2Relative aperture radius (upper limit)pos.angDistancefloatrwlLuminosity weighted radiuspos.angDistancefloatreqAdopted equivalent radiusarcsecphys.angSize;srcfloatCN1Line-strength index of CN1magphot.colorfloatCN2Line-strength index of CN2magphot.colorfloatCa4227Line-strength index of Ca42270.1nmmeta.code;spect.indexfloatG4300Line-strength index of G43000.1nmmeta.code;spect.indexfloatFe4383Line-strength index of Fe43830.1nmmeta.code;spect.indexfloatCa4455Line-strength index of Ca44550.1nmmeta.code;spect.indexfloatFe4531Line-strength index of Fe45310.1nmmeta.code;spect.indexfloatFe4668Line-strength index of Fe46680.1nmmeta.code;spect.indexfloatHbetaLine-strength index of H{beta}0.1nmspect.index;em.line.HbetafloatFe5015Line-strength index of Fe50150.1nmmeta.code;spect.indexfloatMg1Line-strength index of Mg1magphot.colorfloatMg2Line-strength index of Mg2magphot.colorfloatMgbLine-strength index of Mgb0.1nmmeta.code;spect.indexfloatFe5270Line-strength index of Fe52700.1nmmeta.code;spect.indexfloatFe5335Line-strength index of Fe53350.1nmmeta.code;spect.indexfloatFe5406Line-strength index of Fe54060.1nmmeta.code;spect.indexfloatFe5709Line-strength index of Fe57090.1nmmeta.code;spect.indexfloatFe5782Line-strength index of Fe57820.1nmmeta.code;spect.indexfloatNaDLine-strength index of NaD0.1nmmeta.code;spect.indexfloatTiO1Line-strength index of TiO1magphot.colorfloatTiO2Line-strength index of TiO2magphot.colorfloatHdeltaALine-strength index of H{delta}A0.1nmspect.indexfloatHgammaALine-strength index of H{gamma}A0.1nmspect.index;em.line.HgammafloatHdeltaFLine-strength index of H{delta}F0.1nmspect.indexfloatHgammaFLine-strength index of H{gamma}F0.1nmspect.index;em.line.Hgammafloate_CN1Error on Line-strength index of CN1magstat.errorfloate_CN2Error on Line-strength index of CN2magstat.errorfloate_Ca4227Error on Line-strength index of Ca42270.1nmstat.errorfloate_G4300Error on Line-strength index of G43000.1nmstat.errorfloate_Fe4383Error on Line-strength index of Fe43830.1nmstat.errorfloate_Ca4455Error on Line-strength index of Ca44550.1nmstat.errorfloate_Fe4531Error on Line-strength index of Fe45310.1nmstat.errorfloate_Fe4668Error on Line-strength index of Fe46680.1nmstat.errorfloate_HbetaError on Line-strength index of H{beta}0.1nmstat.error;spect.line.intensity;em.line.Hbetafloate_Fe5015Error on Line-strength index of Fe50150.1nmstat.errorfloate_Mg1Error on Line-strength index of Mg1magstat.errorfloate_Mg2Error on Line-strength index of Mg2magstat.errorfloate_MgbError on Line-strength index of Mgb0.1nmstat.errorfloate_Fe5270Error on Line-strength index of Fe52700.1nmstat.errorfloate_Fe5335Error on Line-strength index of Fe53350.1nmstat.errorfloate_Fe5406Error on Line-strength index of Fe54060.1nmstat.errorfloate_Fe5709Error on Line-strength index of Fe57090.1nmstat.errorfloate_Fe5782Error on Line-strength index of Fe57820.1nmstat.errorfloate_NaDError on Line-strength index of NaD0.1nmstat.errorfloate_TiO1Error on Line-strength index of TiO1magstat.errorfloate_TiO2Error on Line-strength index of TiO2magstat.errorfloate_HdeltaAError on Line-strength index of H{delta}A0.1nmstat.errorfloate_HgammaAError on Line-strength index of H{gamma}A0.1nmstat.errorfloate_HdeltaFError on Line-strength index of H{delta}F0.1nmstat.errorfloate_HgammaFError on Line-strength index of H{gamma}F0.1nmstat.errorfloat