J/AJ/132/321ivo://CDS.VizieR/J/AJ/132/321doi:10.26093/cds/vizier.51320321CDSDeo R.P.Crenshaw D.M.Kraemer S.B.2017-09-29T09:03:24Z2007-10-27T18:51:27ZCDS support team

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

cds-question@unistra.frseyfert-galaxiesredshiftedgalaxy-classification-systemsWe present a study of the nuclear morphology of a sample of narrow- and broad-line Seyfert 1 galaxies (NLS1s and BLS1s, respectively) based on broadband images in the Hubble Space Telescope archives. In our previous study we found that large-scale stellar bars at >1kpc from the nucleus are more common in NLS1s than BLS1s. In this paper we find that NLS1s preferentially have grand-design dust spirals within ~1kpc of their centers. We also find that NLS1s have a higher fraction of nuclear star-forming rings than BLS1s. We find that many of the morphological differences are due to the presence or absence of a large-scale stellar bar within the spiral host galaxy. In general, barred Seyfert 1 galaxies tend to have grand-design dust spirals at their centers, confirming the results of other researchers. The high fraction of grand-design nuclear dust spirals and stellar nuclear rings observed in NLS1s' host galaxies suggests a means for efficient fueling of their nuclei to support their high Eddington ratios.2006AJ....132..321Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/132/321CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/141/23 : JHK' imaging photometry of Seyfert 1. I. (Enya+, 2002)J/ApJS/141/31 : JHK' imaging photometry of Seyfert 1. II. (Enya+, 2002)J/AJ/124/3042 : Narrow-line Seyfert 1 galaxies from SDSS EDR (Williams+, 2002)J/AJ/131/1948 : Narrow line Seyfert 1 galaxies in the FBQS (Whalen+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/132/321https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/132/321http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/132/321https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/132/321https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/132/321http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/132/321GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/132/321/table1 (Nuclear Morphology and Host Galaxy Parameters for Seyfert 1 Galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/132/321/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/132/321/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/132/321/table1?GETtext/xml+votable180.050000true164.8270833-51.44166670.0055555555555555566/134 595 941 1405 2221 4439 4488 4992 5395 5500 5989 6534 6977 7214 7642 7728 7921 8261 8922 9189 9449 9633 9750 9812 10501 10927 10995 11388 11490 11712 11898 16690 17134 17727 17779 17911 18246 18484 18762 18794 19283 19296 19360 19469 19797 19883 20230 23010 23017 23124 25054 25090 25182 25610 25907 26041 26071 26148 26181 26300 26393 27484 27721 28361 28517 28593 28605 28609 30021 31120 31676 32986 33958 34104 34294 35263 35284 35623 36733 36775 38085 38268 39295 43634 43806 43877 45779 46615 47047 47120 49001https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/132/321?format=asciiOpticaldefaultJ/AJ/132/321/table1Nuclear Morphology and Host Galaxy Parameters for Seyfert 1 GalaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (1)meta.id;meta.maincharn_Name[a-g] Note on Name (2)meta.notecharzRedshift (Crenshaw, Kraemer & Gabel, 2003AJ....126.1690C)src.redshiftfloatb/aThe RC3 axial ratio from NEDphys.angSize;arith.ratiofloatTNumerical Hubble stage index from NED (3)meta.code;spect.indexfloatBMAG? Absolute B band magnitude from NED (4)magphys.magAbs;em.opt.BfloatnullableSClassSeyfert 1 classmeta.code.classcharMorphLarge-scale morphology (5)src.morphcharN-MorphNuclear morphology (6)meta.code;src.morphcharSimbadNameSimbad column added by the CDSmeta.idcharNEDSimbad column added by the CDSchar_RAComputed Right Ascension for Equinox: J2000degpos.eq.ra;meta.main_DEComputed Declination for Equinox: J2000degpos.eq.dec;meta.main