J/A+AS/130/285ivo://CDS.VizieR/J/A+AS/130/285CDSContini T.Considere S.Davoust E.2013-03-06T06:38:08Z1998-06-16T22:21:20ZCDS support team

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

cds-question@unistra.frmarkarian-galaxiesactive-galactic-nucleih-ii-regionsspectrophotometryThis paper presents optical long-slit spectroscopic observations of 105 barred Markarian IRAS galaxies. These observations are used to determine the spectral type (starburst or Seyfert) of emission-line regions in the nucleus and along the bar of the galaxies, in order to define a homogeneous sample of Starburst Nucleus Galaxies (SBNGs). Our selection criteria (ultraviolet excess, far infrared emission and barred morphology) have been very efficient for selecting star-forming galaxies, since our sample of 221 emission-line regions includes 82% nuclear or extranuclear starbursts. The contamination by Seyferts is low (9%). The remaining galaxies (9%) are objects with ambiguous classification (HII or LINER). The dust content and H{alpha} luminosity increase towards the nuclei of the galaxies. No significant variation of the electron density is found between nuclear and bar HII regions. However, the mean H{alpha} luminosity and electron density in the bar are higher than in typical disk HII regions. We investigate different mechanisms for explaining the excess of nitrogen emission observed in our starburst nuclei. There is no evidence for the presence of a weak hidden active galactic nucleus in our starburst galaxies. The cause of this excess is probably a selective enrichment of nitrogen in the nuclei of the galaxies, following a succession of short and intense bursts of star formation. Our sample of SBNGs, located at a mean redshift of 0.015, has moderate H{alpha} (10^41^erg/s) and far infrared (10^10^L{sun}) luminosities. The types are distributed equally among early- and late-type giant spirals with a slight preference for Sbc/Sc types because of their barred morphology. The majority (62%) of SBNGs are isolated with no sign of gravitational interaction. In terms of distance, luminosity and level of interaction, SBNGs are intermediate between HII galaxies and luminous infrared galaxies.1998A&AS..130..285Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/130/285CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/172 : First Byurakan Survey (FBS) (Markarian+, 1989)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/130/285https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/130/285http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/130/285https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/130/285https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/130/285http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/130/285GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/130/285/table1 (Global properties of the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/130/285/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/130/285/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/130/285/table1?GETtext/xml+votable180.050000true19.02966733.0894940.0055555555555555566/12 528 956 959 995 1008 1702 2142 2229 2242 2261 2266 2433 3072 4147 4318 4381 4806 4834 4953 5295 5500 5558 5593 5822 5939 5979 5982 5988 6023 6129 6201 6534 6605 6958 6977 7061 7132 7282 7310 7429 7456 7484 7658 7706 7728 7741 7928 7959 7982 8067 8443 8455 8509 8526 8547 8679 8736-8737 8832 9124 9750 9791 10378 10490 10501 10530 10560 10637 10650 10759 11084 11100 11120 11232 11392 11568 11800 11906 12082 12171 12399 13423 16860 16884 17492 17575 17768 17835 18070 18217 18299 18400 18480 18739 18809 18897 18930 19538 19619 19754 19797 19833 20011 20014 20138-20139 20177 20187 20214 20226 20254 22611 22632 22721 22923 22973 23013 23113 23205 25518 25715 25791 25862 26148 26214 26267 26488 26537 26712 27005 27135 27365 27434 27555 27653 27656 27719 27871 28517 31676 32550 40782https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/130/285?format=asciiOpticaldefaultJ/A+AS/130/285/table1Global properties of the samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMrkMarkarian (Cat. <VII/172>) numbermeta.id;meta.mainintprimaryRAhRight ascension (1950)degpos.eq.ra;meta.mainDE1950Declination (1950)degpos.eq.dec;meta.mainNameOther namemeta.id;meta.maincharMtypeMorphological type from RC3src.morph.typecharRing[R] Ringmeta.notecharMult[M] Multiple systemmeta.notecharCType? Code for morphological type (RC3)src.morph.typefloatnullablei? Inclination angledegsrc.orbital.inclination;pos.posAngfloatnullableHRVHeliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricintBmagApparent blue magnitudemagphot.mag;em.opt.BfloatMabsAbsolute blue magnitudemagphys.magAbs;em.opt.Bfloatq_F12Quality codes for the IRAS 12 micron bandmeta.code.qualintF12Flux density at 12 micronJyphot.flux.density;em.IR.8-15umfloatq_F25Quality codes for the IRAS 25 micron bandmeta.code.qualintF25Flux density at 25 micronJyphot.flux.density;em.IR.15-30umfloatq_F60Quality codes for the IRAS 60 micron bandmeta.code.qualintF60Flux density at 60 micronJyphot.flux.density;em.IR.30-60umfloatq_F100Quality codes for the IRAS 100 micron bandmeta.code.qualintF100Flux density at 100 micronJyphot.flux.density;em.IR.60-100umfloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedJ/A+AS/130/285/table3Log of spectroscopic observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMrkMarkarian (Cat. <VII/172>) numbermeta.id;meta.mainintprimaryDateDate of observationtime.epochnullableExpExposure timemintime.duration;obs.exposureintRangelSpectral range (lower value)0.1nminstr.bandwidthintRangeuSpectral range (upper value)0.1nminstr.bandwidthintWidthSlit widtharcsecspect.line.widthfloatPAPosition angle of the slitdegpos.posAngintJ/A+AS/130/285/table4Intensity and equivalent width of emission linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMrkMarkarian (Cat. <VII/172>) numbermeta.id.part;meta.mainintprimaryNo? Number of the emission-line region in the galaxymeta.id.part;meta.mainintnullablePos[0/1] Position: nuclear (1) or extranuclear (0) emission-line regionpos.eqintDist? Distance between extranuclear emission-line regions and the galaxy nucleusarcsecpos.angDistancefloatnullableSizeSize of emission-line regionsarcsecphys.angSizefloatl_F(Hbeta)Limit lfag on F(Hbeta)meta.code.errorcharF(Hbeta)? H{beta} (4861) line flux (1)1e-14mW.m**-2phys.luminosity;em.line.HbetafloatnullableW(Hbeta)? H{beta} (4861) equivalent width0.1nmspect.line.eqWidth;em.line.HbetafloatnullableF([OIII]a)? [OIII] (4959) line flux (1)1e-14mW.m**-2phot.flux;em.line.OIII;spect.linefloatnullableW([OIII]a)? [OIII] (4959) equivalent width0.1nmspect.line.eqWidth;em.line.OIIIfloatnullableF([OIII]b)? [OIII] (5007) line flux (1)1e-14mW.m**-2phot.flux;em.line.OIII;spect.linefloatnullableW([OIII]b)? [OIII] (5007) equivalent width0.1nmspect.line.eqWidth;em.line.OIIIfloatnullableF([NII]a)? [NII] (6548) line flux (1)1e-14mW.m**-2phot.flux;spect.linefloatnullableW([NII]a)? [NII] (6548) equivalent width0.1nmspect.line.eqWidthfloatnullableF(Halpha)? H{alpha} (6653) line flux (1)1e-14mW.m**-2phys.luminosity;em.line.HalphafloatnullableW(Halpha)? H{alpha} (6653) equivalent width0.1nmspect.line.eqWidth;em.line.HalphafloatnullableF([NII]b)? [NII] (6583) line flux (1)1e-14mW.m**-2phot.flux;spect.linefloatnullableW([NII]b)? [NII] (6583) equivalent width0.1nmspect.line.eqWidthfloatnullableF([SII]a)? [SII] (6716) line flux (1)1e-14mW.m**-2phot.flux;spect.linefloatnullableW([SII]a)? [SII] (6716) equivalent width0.1nmspect.line.eqWidthfloatnullableF([SII]b)? [SII] (6731) line flux (1)1e-14mW.m**-2phot.flux;spect.linefloatnullableW([SII]b)? [SII] (6731) equivalent width0.1nmspect.line.eqWidthfloatnullableJ/A+AS/130/285/table5Magnitude and color indices of the spectral continuumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMrkMarkarian (Cat. <VII/172>) numbermeta.id.part;meta.mainintprimaryNo? Number of the emission-line region in the galaxymeta.id.part;meta.mainintnullableBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmagV magnitudemagphot.mag;em.opt.VfloatRmagR magnitudemagphot.mag;em.opt.Rfloatb-v? b-v color indexmagphot.color;em.opt.B;em.opt.Vfloatnullablev-rv-r color indexmagphot.color;em.opt.V;em.opt.RfloatJ/A+AS/130/285/table6Derived spectrophotometric parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMrkMarkarian (Cat. <VII/172>) numbermeta.id.part;meta.mainintprimaryNo? Number of the emission-line region in the galaxymeta.id.part;meta.mainintnullablePosnuclear (1) or extranuclear (0) emission-line regionmeta.codeintDgal? Distance of the galaxy (with H_0_=75km/s/Mpc)Mpcpos.distancefloatnullableDist? Distance between extranuclear emission-line regions and the galaxy nucleuskpcpos.distancefloatnullableSizeSize of emission-line regionskpcphys.size.diameterfloatc(Hbeta)? Reddening coefficientmagphot.color.excessfloatnullableNE? Electronic densitycm**-3phys.densityintnullablelog([NII]/Halpha)? log([NII]6583/H{alpha})spect.line.intensity;arith.ratiofloatnullablelog([SII]/Halpha)? log([SII]6716+6731/H{alpha})spect.line.intensity;arith.ratiofloatnullablelog([OIII]/Hbeta)? log([OIII]5007/H{beta})spect.line.intensity;arith.ratiofloatnullableStypeResults of the spectral classification (1)spect.indexcharI(Halpha)? H{alpha} line flux corrected for reddening1e-15mW.m**-2phot.flux;em.line.Halpha;spect.linefloatnullablelog(L(Halpha))? log of H{alpha} luminosity corrected for reddeninglog(1e-07J.s**-1)phys.luminosity;em.line.Halphafloatnullableu_I(Halpha)Uncertainty flag on I(Halpha) and log(L(Halpha)) (2)meta.code.errorchar