J/MNRAS/477/4152ivo://CDS.VizieR/J/MNRAS/477/4152doi:10.26093/cds/vizier.74774152CDSRousseau-nepton L.Robert C.Martin R.P.Drissen L.Martin T.2024-08-18T20:19:17Z2021-08-20T14:05:46ZCDS support team

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

cds-question@unistra.frgalaxiesh-ii-regionschemical-abundancesThis is the first paper of a series dedicated to nebular physics and the chemical evolution of nearby galaxies by investigating large samples of H II regions with the Canada-France-Hawaii Telescope imaging spectrograph SITELLE (Spectro-Imageur a Transformee de Fourier pour l'Etude en Long et en Large des raies d'Emission). We present a technique adapted to imaging spectroscopy to identify and extract parameters from 4285 H II region candidates found in the disc of NGC 628. Using both the spatial and spectral capabilities of SITELLE, our technique enables the extraction of the position, dust extinction, velocity, H{alpha} profile, diffuse ionized gas (DIG) background, luminosity, size, morphological type, and the emission-line fluxes for individual spaxels and the integrated spectrum for each region. We have produced a well-sampled H II region luminosity function and studied its variation with galactocentric radius and level of the DIG background. We found a slope {alpha} of -1.12+/-0.03 with no evidence of a break at high luminosity. Based on the width of the region profile, bright regions are rather compact, while faint regions are seen over a wide range of sizes. The radius function reveals a slope of -1.81+/-0.02. BPT diagrams of the individual spaxels and integrated line ratios confirm that most detections are H II regions. Also, maps of the line ratios show complex variations of the ionization conditions within HII regions. All this information is compiled in a new catalogue for HII regions. The objective of this data base is to provide a complete sample which will be used to study the whole parameter space covered by the physical conditions in active star-forming regions.2018MNRAS.477.4152Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/477/4152CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/806/16 : CHemical Abundances of Spirals (CHAOS). I. NGC628 (Berg+, 2015)J/ApJ/826/209 : IRX-{beta} relation of HII regions in NGC628 (Ye+, 2016)J/A+A/600/A6 : NGC628 3.1GHz total intensity+polarised images (Mulcahy+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/477/4152https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/477/4152http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/477/4152https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/477/4152https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/477/4152http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/477/4152GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/477/4152/catalog (Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/477/4152/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/477/4152/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/477/4152/catalog?GETtext/xml+votable180.050000true24.246915.78940.0055555555555555566/18398https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/477/4152?format=asciidefaultJ/MNRAS/477/4152/catalogCatalogID[1/4285] ID of the regionmeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainRgGalactocentric radiuskpcpos.distance;pos.galactocentricdoublelogLHa? H{alpha} total luminosity corrected for extinctionlog(1e-07W)spect.line.intensity;arith.ratiodoublenullablelogDIGsb? H{alpha} mean diffuse ionized gaz background level (in mW/m2/spaxel unit)log(mW.m**-2)spect.line.intensity;arith.ratiodoublenullableReg[1/4] Region category (1)meta.codeintI0pPseudo-Voigt profile parameter I0mW.m**-2stat.paramdoubleApPseudo-Voigt profile parameter AmpmW.m**-2stat.paramdoublesigpPseudo-Voigt profile parameter {sigma}pcstat.paramdoublealphapPseudo-Voigt profile parameter {alpha}%stat.paramdoubleR2pPseudo-Voigt profile correlation coefficient R^2^stat.paramdoubleSizeSize of the regionpcphys.size.diameterdoubleE(B-V)? Extinctionmagphot.color.excessdoublenullablee_E(B-V)? Extinction errormagstat.errordoublenullablelogNII/Ha? log line ratio [NII]6583/H{alpha}spect.line.intensity;arith.ratiodoublenullablee_logNII/Ha[]? log line ratio [NII]6583/Ha errorstat.errordoublenullableSNR1line ratio [NII]6583/Ha best SNRstat.snrdoublelog[SII]/Ha? log line ratio [SII]6716+6731/H{alpha}spect.line.intensity;arith.ratiodoublenullablee_log[SII]/Ha[]? log line ratio [SII]6716+6731/Ha errorstat.error;arith.zpdoublenullableSNR2line ratio [SII]6716+6731/[NII]6583 best SNRstat.snrdoublelog[SII]/[NII]? log line ratio [SII]6716+6731/[NII]6583spect.line.intensity;arith.ratiodoublenullablee_log[SII]/[NII][]? log line ratio [SII]6716+6731/[NII]6583 errorstat.error;arith.zpdoublenullableSNR3line ratio [SII]6716+6731/[NII]6583 best SNRstat.snrdoublelog[OIII]/Hb? log line ratio [OIII]5007/H{beta}spect.line.intensity;arith.ratiodoublenullablee_log[OIII]/Hb[]? log line ratio [OIII]5007/Hb errorstat.error;arith.zpdoublenullableSNR4? line ratio [OIII]5007/Hb best SNRstat.snrdoublenullablelog[OII]3727/Hb? log line ratio [OI]3727/H{beta}spect.line.intensity;arith.ratiodoublenullablee_log[OII]3727/Hb[]? log line ratio [OII]3727/Hb errorstat.error;arith.zpdoublenullableSNR5? line ratio [OII]3727/H{beta} best SNRstat.snrdoublenullablelog([OII]+[OIII])/Hb? log line ratio ([OII]3727+[OIII]5007)/Hbspect.line.intensity;arith.ratiodoublenullablee_log([OII]+[OIII])/Hb[]? log line ratio ([OII]3727+[OIII]5007)/Hb errorstat.errordoublenullableSNR6? line ratio ([OII]3727+[OIII]5007)/Hb best SNRstat.snrdoublenullablelog[OIII]/[OII]? log line ratio [OIII]5007/[OII]3727spect.line.intensity;arith.ratiodoublenullablee_log[OIII]/[OII][]? log line ratio [OIII]5007/[OII]3727 errorstat.error;arith.zpdoublenullableSNR7? line ratio [OIII]5007/[OII]3727 best SNRstat.snrdoublenullablelog[OIII]/[NII]? log line ratio [OIII]5007/[[NII]6583spect.line.intensity;arith.ratiodoublenullablee_log[OIII]/[NII][]? log line ratio [OIII]5007/[[NII]6583 errorstat.error;arith.zpdoublenullableSNR8? line ratio [OIII]5007/[[NII]6583 best SNRstat.snrdoublenullablelog[OII]/[NII]? log line ratio [OII]3727/[NII]6583spect.line.intensity;arith.ratiodoublenullablee_log[OII]/[NII][]? log line ratio [OII]3727/[NII]6583 errorstat.error;arith.zpdoublenullableSNR9? line ratio [OII]3727/[NII]6583 best SNRstat.snrdoublenullablelog[SII]16/[SII]31? log line ratio [SII]6716/[SII]6731spect.line.intensity;arith.ratiodoublenullablee_log[SII]16/[SII]31[]? log line ratio [SII]6716/[SII]6731 errorstat.error;arith.zpdoublenullableSNR10line ratio [SII]6716/[SII]6731 best SNRstat.snrdouble