J/MNRAS/403/896ivo://CDS.VizieR/J/MNRAS/403/896doi:10.26093/cds/vizier.74030896CDSPilyugin L.S.Vilchez J.M.Cedres B.Thuan T.X.2024-07-11T20:16:17Z2010-10-21T13:40:59ZCDS support team

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

cds-question@unistra.frh-ii-regionsspectroscopychemical-abundancesSpectra of high-metallicity [12+log(O/H)>~8.2] HII regions, where oxygen auroral lines are measurable in both the O^+^ and O^++^ zones, have been extracted from the Data Release 6 of the Sloan Digital Sky Survey (SDSS). Our final sample consists of 181 SDSS spectra of HII regions in galaxies in the redshift range from ~0.025 to ~0.17. The t_2,O_-t_3,O_ diagram is examined. In the SDSS HII regions, the electron temperature t_2,O_ is found to have a large scatter at a given value of the electron temperature t_3,O_. The majority of the SDSS HII regions lie below the t_2,O-t3,O_ relation derived for HII regions in nearby galaxies, i.e. the positions of the SDSS HII regions show a systematic shift towards lower t_2,O_ temperatures or/and towards higher t_3,O_ temperatures. The scatter and shift of the SDSS HII regions in the t_2,O_-t_3,O_ diagram can be understood if they are composite nebulae excited by two or more ionizing sources of different temperatures.2010MNRAS.403..896Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/403/896CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/153/429 : SDSS strong emission line HII galaxies (Kniazev+, 2004)http://www.sdss.org : SDSS Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/403/896https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/403/896http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/403/896https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/403/896https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/403/896http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/403/896GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/403/896/tablea1 (Dereddened line intensities and electron temperatures of a sample of HII regions in SDSS galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/403/896/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/403/896/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/403/896/tablea1?GETtext/xml+votable180.050000true1.73754170.85722220.0055555555555555566/4719 4729 4732 4758 4773 4798 4816 4824 4833 4913 4920 4978 4997 5026 5033 5083 5223 5343 5350 5372 5395 5400 5405 5443 5554 5604 5659 5661 5703 5764 5954 5971 5998 6142 6215 6396 6470 6496 6514 6626 7191 7199 7220 7255 7259 7272 7292 7315 7354 7472 7518 7532 8374 8522 8720 8827 9053-9054 9063 9170 9223 9272 9319 9349 9360 9380 9383 9408 9734 9750 9771 9863 10095 10261 10312 10435 10463 10636 10691 10697 10835 10837 10866 10887 10964 11009 11020-11021 11101 11115 11126 11140 11168 11207 11244 11247 11269 11283 11389 11414 11512 11782 11811 11813 17601 17748 17858 18025 18027 18062 18091 18785 19038 19050 19095 19327 21877 23194-23196 25843 26104 26111 26222 26353 26395-26396 26483 26526 26551 26555 26565 26946 27053 27446 27463 27494 27518 27547 27569 27582 27706 27719 27796 27827 27877 27885 27932 28032 28208 28540 28573 28583 28587 28604 28639 31316 32489 32492 49016 49101https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/403/896?format=asciiOpticaldefaultJ/MNRAS/403/896/tablea1Dereddened line intensities and electron temperatures of a sample of HII regions in SDSS galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/181] Sequential numbermeta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainPlateSpectrum SDSS Plate numbermeta.id;instr.plateintMJDSpectrum SDSS MJD numbertime.epochintFiberSpectrum SDSS Fiber numbermeta.id;meta.mainint[OII]1Line intensity of [OII]3727 (1)spect.line.intensityfloat[OIII]1Line intensity of [OII]4363 (1)spect.line.intensityfloat[OIII]2Line intensity of [OII]4959+5007 (1)spect.line.intensityfloat[SII]1Line intensity of [SII]6717 (1)spect.line.intensityfloat[SII]2Line intensity of [SII]6731 (1)spect.line.intensityfloat[OII]2Line intensity of [OII]7325 (1)spect.line.intensityfloatt3,OElectron temperature within the [OIII] zone10000Kphys.temperature;phys.electronfloatt2,OElectron temperature within the [OII] zone10000Kphys.temperature;phys.electronfloatSDSSDisplay the SDSS data for this HII regionmeta.ref.urlcharDR7Display the deta&ils of the SDSS-DR7 photometrymeta.ref.urlchar