J/MNRAS/424/2316ivo://CDS.VizieR/J/MNRAS/424/2316doi:10.26093/cds/vizier.74242316CDSPilyugin L.S.Grebel E.K.Mattsson L.2024-07-18T20:18:49Z2013-08-12T13:50:29ZCDS support team

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

cds-question@unistra.frh-ii-regionschemical-abundancesWe suggest a new way of determining abundances and electron temperatures in HII regions from strong emission lines. Our approach is based on the standard assumption that HII regions with similar intensities of strong emission lines have similar physical properties and abundances. A 'counterpart' for a studied HII region may be chosen among HII regions with well-measured abundances (reference HII regions) by comparison of carefully chosen combinations of strong-line intensities. Then the abundances in the investigated HII region can be assumed to be the same as those in its counterpart. In other words, we suggest to determine the abundances in HII regions 'by precedent'. To get more reliable abundances for the considered HII region, a number of reference HII regions are selected and then the abundances in the target HII region are estimated through extrapolation/interpolation. We will refer to this method of abundance determination as the counterpart method or, for brevity, the C method. We define a sample of reference HII regions and verify the validity of the C method. We find that this method produces reliable abundances. Finally, the C method is used to obtain the radial abundance distributions in the extended discs of the spiral galaxies M83, NGC 4625 and NGC 628.2012MNRAS.424.2316Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/424/2316CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/91/285 : HII galaxies spectrophotometric catalogue (Terlevich+, 1991)J/AJ/116/2805 : HII regions in spiral galaxies (Van Zee+, 1998)J/AJ/121/169 : Imaging and spectroscopy of Tol 1214-277 (Fricke+, 2001)J/A+A/421/539 : VLT spectroscopy of Tol 1214-277 + Tol 65 (Izotov+, 2004)J/ApJ/602/200 : HII regions abundances in blue compact galaxies (Izotov+ 2004)J/ApJ/602/200 : HII regions abundances in blue compact galaxies (Izotov+ 2004)J/A+A/441/981 : HII regions in 5 spiral galaxies (Bresolin+, 2005)J/ApJ/636/214 : HII regions in dwarf irregular galaxies (van Zee+, 2006)J/ApJ/656/168 : Spectrophotometry in NGC 5253 (Lopez-Sanchez+, 2007)J/A+A/464/885 : Abundances in 53 HII regions (Guseva+, 2007)J/A+A/476/89 : HII galaxies narrow-band Hbeta images (Lagos+, 2007)J/ApJ/662/15 : Abundances in extragalactic HII regions (Izotov+, 2007)J/ApJ/700/654 : Keck spectroscopy of extragalactic HII regions (Esteban+ 2009)J/A+A/521/A3 : Abundances in HII regions and PNe of M81 (Stanghellini+, 2010)J/A+A/529/A149 : HII regions in low-metallicity galaxies (Guseva+, 2011)J/A+A/533/A25 : VLT/X-shooter observations of PHL293B (Izotov+ 2011)J/ApJ/735/71 : Oxygen abundances in outlying HII regions (Werk+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/424/2316https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/424/2316http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/424/2316https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/424/2316https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/424/2316http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/424/2316GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/424/2316/tablea1 (List of the reference HII regions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/424/2316/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/424/2316/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/424/2316/tablea1?GETtext/xml+votable180.050000true202.49847.2327220.0055555555555555566/38 816 955 2109 2155 2241 2258 2666 3042 4251 4534 4948 5026 5168 5203 5283 5419 5556 5607 6010-6011 6034 6075 6087 6419 6619 6995 7022 7190 7243 7251 7257 7261 7273 7281 7381 7498 7584 7606 7683 7692 7743 7878 7926 7946 8028 9060 9112 9190 9855 9954 9966 10106 10328 10348 10472 10481 10488 10561 10587 10607 10638 10689 10762 10769 10888 10892 10927 10970 11027 11031 11132 11137 11177-11178 11239 11355 11380 11434 11696 16519 16686 17165 17725 17865 17867 18027 18038 18081 18198 18235 18398 18429 18793 18858 19172 19417 19570 19779 20183 20388 20400 22828 23078 23566 24624 24696 25045 25169 25227 25253 25344 25594 25659 25734 26278 26362 26821 26963 26971 26992 27199 27243 27457 27713 27765 27926 28077 28149 28335 28505 28631 29654 29718 33193 34170 34243 34430 34498 34531 35214 35238 35514 35536 35538 36258 36756 36861 38390 38655 38821 38829 38833 38846 38906 39574 40124 40255 43420 43635 43720 43754 43763 43829 43845 43874 43881 43976 44236 44722 47701https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/424/2316?format=asciiOpticaldefaultJ/MNRAS/424/2316/tablea1List of the reference HII regionsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintlogR3Dereddened [OIII] line intensity R3, I([OIII]4959,5007)/I(H{beta})spect.line.intensity;arith.ratiofloatlogR2Dereddened [OII] line intensity R2, I([OII]3727,3729)/I(H{beta})spect.line.intensity;arith.ratiofloatlogN2Dereddened [NII] line intensity N2, I([NII]6548,6584)/I(H{beta})spect.line.intensity;arith.ratiofloatlogS2Dereddened [SII] line intensity S2, I([SII]6717,6731)/I(H{beta})spect.line.intensity;arith.ratiofloateps(O)Te-based oxygen abundance 12+log(O/H)phys.abundfloateps(N)Te-based nitrogen abundance 12+log(N/H)phys.abundfloatTeElectron temperature reduced to t3([OIII])10000Kphys.temperature.electron;phys.electronfloatn_Te[1/3] method to derive Te (j_T_ index) (1)meta.noteintHIIHII region namemeta.id;obs.fieldcharRefReference for spectral data, in refs.dat filemeta.ref;pos.frameint_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.mainJ/MNRAS/424/2316/refsReferenceComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintprimaryBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorchar