J/MNRAS/491/92ivo://CDS.VizieR/J/MNRAS/491/92doi:10.26093/cds/vizier.74910092CDSLiao M.Gu M.2024-08-20T20:15:16Z2023-03-29T12:36:39ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiblack-holesaccretionradio-sourcesgalaxiesvisible-astronomyspectroscopyline-intensitiesredshiftedThe gigahertz peaked spectrum (GPS) sources, compact steep spectrum (CSS) radio sources, and high-frequency peaker (HFP) radio sources are thought to be young radio active galactic nuclei (AGNs) at the early stage of AGN evolution. We investigated the optical properties of the largest sample of 126 young radio AGNs based on the spectra in SDSS DR12. We find that the black hole masses M_BH_ range from 10^7.32^ to 10^9.84^M_{sun}_ and the Eddington ratios R_edd_ vary from 10^-4.93^ to 10^0.37^, suggesting that young radio AGNs have various accretion activities and not all are accreting at high accretion rate. Our young radio sources generally follow the evolutionary trend towards large-scale radio galaxies with increasing linear size and decreasing accretion rate in the radio power-linear size diagram. The radio properties of low-luminosity young radio AGNs with low R_edd_ are discussed. The line width of [OIII]{lambda}5007 core ({sigma}[OIII]) is found to be a good surrogate of stellar velocity dispersion {sigma}*. The radio luminosity L_{5GHz}_ correlates strongly with [OIII] core luminosity L_[OIII]_, suggesting that radio activity and accretion are closely related in young radio sources. We find one object that can be defined as a narrow-line Seyfert 1 galaxy, representing a population of young AGNs with both young jet and early accretion activity. The optical variabilities of 15 quasars with multi-epoch spectroscopy were investigated. Our results show that the optical variability in young AGN quasars presents low variations (=<60 per cent) similar to the normal radio-quiet quasars.2020MNRAS.491...92Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/491/92CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/491/92https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/491/92http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/491/92https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/491/92https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/491/92http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/491/92GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/491/92/table1 (Sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/491/92/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/491/92/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/491/92/table1?GETtext/xml+votable180.050000true5.60594110.24893420.0055555555555555566/2600 4104 4106 4167 4394 4649 4926-4927 5039 5159 5222 5225 5244 5369 5469 5501 5528 5547 5575 5585 5630 5642 5647 5656 5701 5720 5726 5737 5806 5889 5920 5940 5980 6067 6230 6234 6462 6465 6515 6526 6535-6536 6576 6628 7192 7197 7351 8220 8345 8365 8626 8717 8912 8948 9021 9052 9075 9164 9327 9347 9352 9452-9453 9455 9462 9607 9754 9785 9800 9816 9860 9924 9934 9981 9983 10288 10321 10409 10432 10491 10531 10535 10579 10634 10643 10682 10701 10706 10748 10815 10829 10832 10835 10869 10921 11203 11259 11398 11436 11806 11931 18022 18075 18096 18387 19101 19413 21855 22012 22364 25302 26075 26100 26404 26491 27360 27532 27626 27672 27691 28184 28610 28663 31424 32394https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/491/92?format=asciiOpticalRadiodefaultJ/MNRAS/491/92/table1SampleSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharr_P5GHzReference for P5GHz (2)meta.ref;pos.framecharLS? Linear sizepcphys.size.diameterfloatnullablef_LS[a] Flag on LS (4)meta.codecharr_LSReference for LS (2)meta.ref;pos.framecharlogMBH? Logarithm of the black hole masslog(solMass)phys.massfloatnullablemetMBHMethod adopted to obtain logMBHmeta.notecharlogLbol? Bolometric luminositylog(1e-07W)phys.luminosityfloatnullablemetLbolMethod adopted to obtain logLbolmeta.notecharlogRedd? Logarithm of the Eddington ratio (R_edd_=L_bol_/L_edd_)phys.luminosity;arith.ratiofloatnullablezRedshiftsrc.redshiftfloatTypeObject type (1)src.classcharr_TypeReference for Type (2)meta.notecharClass[GQ] Source classification (3)meta.code.classcharP5GHzRadio power at 5GHzlog(W.Hz**-1)phys.luminosity;em.radio.3-6GHzfloatS/NMedian signal to noise ratio of the spectrumem.wl.central;stat.medianfloat_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.mainJ/MNRAS/491/92/table2Emission line propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharFWHMCIV? Full width at half-maximum for broad CIVkm/sspect.line.widthintnullablee_FWHMCIV? Error on FWHMCIVkm/sstat.errorintnullableFCIV? Flux for broad CIV1e-20W.m**-2phot.fluxintnullablee_FCIV? Error on FCIV1e-20W.m**-2stat.errorintnullableFWHMMgII? Full width at half-maximum for broad MgIIkm/sspect.line.widthintnullablee_FWHMMgII? Error on FWHMMgIIkm/sstat.errorintnullableFMgII? Flux for broad MgII1e-20W.m**-2phot.fluxintnullablee_FWHMHbeta? Error on FWHMHbetakm/sstat.errorintnullablee_FMgII? Error on FMgII1e-20W.m**-2stat.errorintnullableFWHMHbeta? Full width at half-maximum for broad H{beta}km/sspect.line.widthintnullableFHbeta? Flux for broad H{beta}1e-20W.m**-2phot.fluxintnullablee_FHbeta? Error on FHbeta1e-20W.m**-2stat.errorintnullableFWHM[OIII]? Full width at half-maximum for [OIII] core linekm/sspect.line.widthintnullablee_FWHM[OIII]? Error on FWHM[OIII]km/sstat.error;phys.angSizeintnullableF[OIII]? Flux for [OIII] core line1e-20W.m**-2phot.fluxintnullablee_F[OIII]? Error on F[OIII]1e-20W.m**-2stat.errorintnullableFWHMHalpha? Full width at half-maximum for broad H{alpha}km/sspect.line.widthintnullablee_FWHMHalpha? Error on FWHMHalphakm/sstat.errorintnullableFHalpha? Flux for broad H{alpha}1e-20W.m**-2phot.fluxintnullablee_FHalpha? Error on FHalpha1e-20W.m**-2stat.errorintnullableFWHM[SII]? Full width at half-maximum for [SII] {lambda}6716km/sspect.line.widthintnullablee_FWHM[SII]? Error on FWHM[SII]km/sstat.error;phys.angSizeintnullableF[SII]? Flux for [SII]{lambda}67161e-20W.m**-2phot.fluxintnullablee_F[SII]? Error on F[SII]1e-20W.m**-2stat.errorfloatnullableJ/MNRAS/491/92/table3The optical variabilityMJDSDSS MJDdtime.epochintDf? Variability {Delta}f (2)%phot.flux;arith.ratiofloatnullablezRedshiftsrc.redshiftfloate_alphalError on alphalstat.errorfloatFWHMCIV? Full width at half-maximum for broad CIVkm/sspect.line.widthintnullablee_FWHMCIV? Error on FWHMCIVkm/sstat.errorintnullableFCIV? Flux for broad CIV1e-20W.m**-2phot.fluxintnullablee_FCIV? Error on FCIV1e-20W.m**-2stat.errorintnullableFWHMMgII? Full width at half-maximum for broad MgIIkm/sspect.line.widthintnullablee_FWHMMgII? Error on FWHMMgIIkm/sstat.errorintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeObject type (1)src.classcharPlateSDSS Plate identifiermeta.id;instr.plateintFibreSDSS Fiber identifiermeta.idintS/NMedian signal to noise ratio of the spectrumem.wl.central;stat.medianfloatDaColour variation (BWB - bluer when lighter)meta.codecharalphalSpectral index of power-law continuumspect.indexfloatf_FWHMMgII[*] Flag on FWHMMgII (3)meta.codecharFMgII? Flux for broad MgII1e-20W.m**-2phot.fluxfloatnullablee_FMgII? Error on FMgII1e-20W.m**-2stat.errorfloatnullablef_FMgII[*] Flag on FMgII (3)meta.codecharNameObject name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharJ/MNRAS/491/92/table4Radio and spectroscopic classificationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharTypeObject type (1)src.classcharClass[GQ] Source classification (2)meta.code.classcharS/NMedian signal to noise ratio of the spectrumem.wl.central;stat.medianintFHbetaFlux for H{beta} (3)1e-20W.m**-2phot.fluxintF[OIII]Flux for [OIII] (3)1e-20W.m**-2phot.fluxintF[OI]Flux for [OI] (3)1e-20W.m**-2phot.fluxintFHalphaFlux for H{alpha} (3)1e-20W.m**-2phot.fluxintF[NII]Flux for [NII] (3)1e-20W.m**-2phot.fluxintF[SII]1Flux for [SII]{lambda}6717 (3)1e-20W.m**-2phot.fluxintF[SII]2Flux for [SII]{lambda}6731 (3)1e-20W.m**-2phot.fluxintEIExcitation index (4)spect.indexfloatHEG/LEGHEG and LEG classification based on EI index (5)meta.code.classcharlogReddLogarithm of the Eddington ratio (R_edd_=L_bol_/L_edd_)phys.luminosity;arith.ratiofloatopttypeOptical classification based on the existence of the broad lines (6)meta.code.classcharf_opttype[ab] Flag on opttype (7)meta.codechar