J/A+A/555/L4ivo://CDS.VizieR/J/A+A/555/L4doi:10.26093/cds/vizier.35559004CDSComeron S.2017-09-22T16:15:52Z2013-07-09T13:52:25ZCDS support team

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

cds-question@unistra.frgalaxiesring-galaxiesIn this Letter, I distinguish "passive" inner rings to be those with no current star formation, as distinct from "active" inner rings which have undergone recent star formation. I built a sample of nearby galaxies with inner rings observed in the near- and mid-infrared by the NIRS0S and the S^4^G surveys. I used archival far-ultraviolet (FUV) and H{alpha} imaging of 319 galaxies to diagnose whether their inner rings are passive or active. I found that passive rings are found only in early-type disc galaxies (-3<=T<=2). In this range of stages, 21+/-3% and 28+/-5% of rings are passive according to the FUV and H{alpha} indicators, respectively. A ring which is passive according to FUV is always passive according to H{alpha}, but the reverse is not always true. Ring-lenses form 30-40% of passive rings, which is four times more than the fraction of ring-lenses found in active rings in the stage range -3<=T<=2. This is consistent with both a resonance and a manifold origin for the rings because both models predict purely stellar rings to be wider than their star-forming counterparts. In the case of resonance rings, the widening may be at least partly due to the dissolution of rings. If most inner rings have a resonance origin, I estimate 200Myr to be a lower bound for their dissolution time-scale. This time-scale is on the order of one orbital period at the radius of inner rings.2013A&A...555L...4Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/555/L4CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://galex.stsci.edu/GR6/ : GALEX CR6/7 data releasehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/555/L4https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/555/L4http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/555/L4https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/555/L4https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/555/L4http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/555/L4GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/555/L4/tablea1 (Properties of the inner ring host galaxies and detection status of the inner rings according to the FUV and H{alpha} indicators)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/555/L4/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/555/L4/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/555/L4/tablea1?GETtext/xml+votable180.050000true23.2016667-79.47388890.0055555555555555565/7009 6/697 739 4149 4178 4447 4989 5006 5028 5075 5142 5182 5190 5198 5200 5202 5288 5332 5463 5579 5581 5586 5589 5610 5617 5634-5635 5715 5793 5796 5961 5976 5982 6003 6010 6093 6103 7225 7287 7498 7584 7606 7659 7704 7941 7982 7986 8011 8195-8196 8225 8228 8256 8320 8331 8359 8376 8458 8473 8506 8723 8729 9573 9882 10328 10364 10380 10402 10475 10490 10589 10637-10638 10650 10841 10856 10878 10900 10912 10925 10927 11010 11027 11195 11197 11207 11246 11327 11434 11446 11738 11772 11789 11832 11965 12005 12231 16479 16531 16871 16886 16898 17064 17281 17480 17509 17598 17606 17747 17761 17780 17855 17905 18209 18214 18384 18415 18507 18800 18860 19449 19611 19614 21155 24735 24896 24912 25044 25046 25053 25078 25104 25135 25205 25346 25350 25439 25490 25512 25581 25599 25613 25645 25705 25715 25738 25779 25790 25862 25888 25946 25972 25997 26065 26068 26090 26148 26247 26267 26287 26303 26307 26309 26331 26338 26343-26344 26365 26388 26507 26537 26555 26724 27090 27098 27186 27255 27285 27365 27367 27512 27514 27606 27653-27654 27668 27713 27716 27718-27721 27730-27731 27735-27736 27738 27741 27743 27765-27767 27814 27841 27853 27857 27860-27861 27914 27918 27936 27938 27942 27945 27949 27955 28015 28035 28045 28058 28123 28162 28191 28201 28234 28294 28435 28463 28495 28516 28521 28529 28579 28593 31360 31454 31469 32439 32482 32909 33654 33920 33951 33954 33958 34334 34343 34404 34494-34495 34531 34542 34674 34701 35193 35691 35746 35993 35995 36045 36081 36107 36131 36134-36135 36250 36258 36261 36266 36288 36332 36380 36450 36609 36684 36732 36796 43920 43954 43978 44026-44027 44582 44636 44660 44741 44817 44866 45050 45178 45471 45558 46327 46398-46399 46477 46481 46491 46525 46577 46651 46738 46812 47030 47456 48464https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/555/L4?format=asciiOpticaldefaultJ/A+A/555/L4/tablea1Properties of the inner ring host galaxies and detection status of the inner rings according to the FUV and H{alpha} indicatorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharFamilyGalaxy family to its bar classification (1)meta.code.classcharStage[-3/9] Galaxy stage T (1)meta.code.classintKind[rsl'_, ] Inner ring kind (1)meta.code.classcharFUV[AP?, ] Inner ring detection status according to FUV (2)meta.code.classcharGALEXGALEX survey of the image used for the FUV detection (3)meta.code.classcharHalpha[AP?, ] Inner ring detection status according to H{alpha} (2)meta.code.classcharSimbadSimbad column added by the CDSmeta.refcharNEDSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main