J/MNRAS/434/336ivo://CDS.VizieR/J/MNRAS/434/336doi:10.26093/cds/vizier.74340336CDSHernandez-Ibarra F.J.Dultzin D.Krongold Y.del Olmo A.Perea J.,Gonzalez J.2024-08-06T20:16:39Z2014-09-17T11:47:11ZCDS support team

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

cds-question@unistra.frgalaxiescatalogschemical-abundancesWe present a spectroscopic study of the incidence of active galactic nucleus (AGN) nuclear activity in two samples of isolated galaxies. Our results show that the incidence of non-thermal nuclear activity is about 43 and 31 percent for galaxies with emission lines and 40 and 27 percent for the total sample, respectively. For the first time we have a large number of bona fide isolated galaxies (513 objects), with statistically significant number of all morphological types. A large fraction (~70%) of elliptical galaxies or early-type spirals have an AGN and ~70% of them are low-ionization nuclear emission-line regions. We find a larger fraction of AGN in early morphological types, as also found in the general population of galaxies. Only 3% of the AGN show the presence of broad lines (not a single one can be classified as type 1 AGN). This is an important result which is at odds with the unified model even if we consider warped or clumpy tori. Finally, we interpret the large fraction of AGN in isolated galaxies as the result of secular accretion.2013MNRAS.434..336Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/434/336CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/82 : Catalogue of Isolated Galaxies (Karachentseva+ 1986)J/A+A/420/873 : Properties of isolated disk galaxies (Varela+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/434/336https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/434/336http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/434/336https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/434/336https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/434/336http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/434/336GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/434/336/galaxies (Intensity ratios and AGN type for the CIG sample and Varela's samples)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/434/336/galaxies?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/434/336/galaxies?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/434/336/galaxies?GETtext/xml+votable180.050000true147.867387510.91992220.0055555555555555566/550 4104 4111 4125 4138 4141 4148 4192 4229 4254 4257 4271 4276 4281 4284 4306 4385 4405 4425 4446 4455 4503 4507 4512 4515 4547 4570 4583 4618 4661 4673 4714 4720 4733 4766-4767 4787-4789 4791 4799 4820 4824 4828 4846 4852 4885 4887 4907 4909 4919 4934 4941 4945 4955 4971 4973 5003 5046 5080 5122 5165 5237 5241 5255 5263 5309 5320-5321 5340 5355 5358 5386 5456 5483 5504 5520 5545 5591 5636 5648 5658 5664 5677 5683 5695 5705 5751 5783 5787 5815 5818 5820 5822 5849 5872 5882-5884 5887 6033 6097 6120 6239 6259 6366 6460 6491 6534 6536 6540 6588 6594 6609 6637 6740 6929 7204 7241 7262 7282 7342 7389 7398 7404 7440-7441 7455 7460 7470 7476 7498 7518 7522 7526 7552 7558 8277 8280 8308-8309 8321 8323 8336-8337 8416 8498 8506 8533 8591 8611 8637 8682 8718 8724 8752 8764 8820 8875 8888 8892-8893 8900 8905 8915 8939 8959 8990 9099 9149 9219 9228 9233 9277 9382 9411 9434-9435 9450 9750 9777 9804 9808 9879 9914 9961 9986 10025 10144 10190 10240 10280 10326 10328 10332 10344 10406 10410 10454 10497 10507 10542 10546 10553 10577 10661 10705 10711 10721 10759 10780 10787 10799 10802 10895 10921 11074 11080 11082 11118 11127 11162 11173 11218 11230 11245 11272 11283 11311 11342 11379 11411 11417 11434 11463 11494 11502 11600 11826 11915 11949 12390-12391 12400 12403 12547 12555 17827 17835 18801 18839 19041 19045 19051 19411 19647 19695 19749 20017 20040 20096 21845 22357 25594-25595 25851 25960 26006 26009 26014 26021 26178 26210 26234-26235 26321 26340-26341 26343 26380 26388 26418-26419 26517 26533 26538 26546 26580 26604 26612 26614 26621 26956-26957 26960 26970 26975 26978 26999 27001 27003 27069 27088 27101 27215 27223 27227 27229 27283 27310 27313-27314 27316 27319 27330 27361 27368 27372 27379 27384-27385 27414 27465 27503 27535 27547 27561 27566 27592-27594 27603 27606 27613 27650 27656 27659 27683 27758 27784 27814 27838 27853 27863 27885 27900 27903 27972 27976 27986 28021 28041 28053 28076 28091 28107 28112 28123 28141 28147 28160-28161 28166 28192 28204 28213 28259 28296 28303 28317 28323 28333 28348 28355 28395 28454 28471 28501 28523 28557 28565 28575 28608 28612 30036 30038 30043 31294 31369 31385 31424 31429 31432-31433 31457 31469 31626 31644 31677 31730 31733 32414 32422 32427-32428 32431 45050https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/434/336?format=asciiOpticaldefaultJ/MNRAS/434/336/galaxiesIntensity ratios and AGN type for the CIG sample and Varela's samplesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSSimbad column added by the CDSmeta.idcharTGalaxy type (E, S, Sa, Sb, Sc, Sm)meta.notecharObjectObject namemeta.id;meta.maincharMTypeMorphological type (1)src.morph.typechar[OIII/Hb]Logarithm intensity ratio [OIII]/H{beta}spect.line.intensity;arith.ratiofloate_[OII/Hb]rms uncertainty on [[OIII]/Hb]stat.errorfloat[NII/Ha]Logarithm intensity ratio [NII]/H{alpha}spect.line.intensity;arith.ratiofloate_[NII/Ha]rms uncertainty on [[NII]/Ha]stat.errorfloat[SII/Ha]Logarithm intensity ratio [SII]/H{alpha}spect.line.intensity;arith.ratiofloate_[SII/Ha]rms uncertainty on [[SII]/Ha]stat.errorfloat[OI/Ha]? Logarithm intensity ratio [OI]/H{alpha}spect.line.intensity;arith.ratiofloatnullablee_[OI/Ha]? rms uncertainty on [[OI]/Ha]stat.error;phys.abundfloatnullableTypeType of galaxy (2)src.classcharn_Type[+*] Note on type (3)meta.notechar_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