J/MNRAS/488/803ivo://CDS.VizieR/J/MNRAS/488/803doi:10.26093/cds/vizier.74880803CDSMoumen I.Robert C.Devost D.Martin R.P.Rousseau-Nepton L.,Drissen L.Martin T.2024-08-20T20:12:29Z2023-02-02T12:34:31ZCDS support team

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

cds-question@unistra.frsupernova-remnantsspectroscopygalaxy-kinematicsvisible-astronomyWe present the first optical identification and confirmation of a sample of supernova remnants (SNRs) in the nearby galaxy NGC 3344. Using high spectral and spatial resolution data, obtained with the CFHT imaging Fourier transform spectrograph SITELLE, we identified about 2200 emission line regions, many of which are HII regions, diffuse ionized gas regions, and also SNRs. Considering the stellar population and diffuse ionized gas background, which are quite important in NGC 3344, we have selected 129 SNR candidates based on four criteria for regions where the emission lines flux ratio [SII]/H{alpha}>=0.4. Emission lines of [OII]{lambda}3727, H{beta}, [OIII]{lambda}{lambda}4959,5007, H{alpha}, [NII]{lambda}{lambda}6548,6583, and [SII]{lambda}{lambda}6716,6731 have been measured to study the ionized gas properties of the SNR candidates. We adopted a self-consistent spectroscopic analysis, based on Sabbadin plots and Baldwin, Phillips & Terlevich diagrams, to confirm the shock-heated nature of the ionization mechanism in the candidates sample. With this analysis, we end up with 42 Confirmed SNRs, 45 Probable SNRs, and 42 Less likely SNRs. Using shock models, the confirmed SNRs seem to have a metallicity ranging between Large Magellanic Cloud and 2xsolar. We looked for correlations between the size of the confirmed SNRs and their emission lines ratios, their galaxy environment, and their galactocentric distance: We see a trend for a metallicity gradient among the SNR population, along with some evolutionary effects.2019MNRAS.488..803Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/488/803CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/488/803https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/488/803http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/488/803https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/488/803https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/488/803http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/488/803GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/488/803/tableb1 (Catalogue of SNR candidates in NGC 3344)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/488/803/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/488/803/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/488/803/tableb1?GETtext/xml+votable180.050000true160.90237524.89568890.0055555555555555566/5142https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/488/803?format=asciiOpticaldefaultJ/MNRAS/488/803/tableb1Catalogue of SNR candidates in NGC 3344SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (SNR-CNNNN)meta.id;meta.maincharf_Name[abc] Flag on name (1)meta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFHaIntegrated H{alpha} fluxmW.m**-2phot.fluxdoubleSizeRegion diameter (2)pcphys.size.diameterintGCDGalactocentric distancekpcpos.distance;pos.galactocentricfloatRCorrelation coefficient of the emission region pseudo-Voight profilestat.correlationfloat[SII]/Ha([SII]{lambda}6716+[SII]{lambda}6731)/H{alpha} flux ratiophot.flux;arith.ratiofloate_[SII]/HaError on [SII]/Hastat.errorfloatsigma? Velocity dispersionkm/sphys.veloc.dispersionfloatnullablee_sigma? Error on sigmakm/sstat.errorfloatnullableJ/MNRAS/488/803/tableb2Emission lines fluxes of the SNR candidates in NGC 3344 corrected for the background contributionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (SNR-CNNNN)meta.id;meta.maincharF3727? Integrated flux for [OII]{lambda}3727 emission line (1)mW.m**-2phot.fluxdoublenullablee_F3727? Error on F3727mW.m**-2stat.errordoublenullableFHb? Integrated flux for H{beta} emission line (1)mW.m**-2phot.fluxdoublenullablee_FHb? Error on FHbmW.m**-2stat.errordoublenullableF4959? Integrated flux for [OIII]{lambda}4959 emission line (1)mW.m**-2phot.fluxdoublenullablee_F4959? Error on F4959mW.m**-2stat.errordoublenullableF5007? Integrated flux for [OIII]{lambda}5007 emission line (1)mW.m**-2phot.fluxdoublenullablee_F5007? Error on F5007mW.m**-2stat.errordoublenullableF6548? Integrated flux for [NII]{lambda}6548 emission line (1)mW.m**-2phot.fluxdoublenullablee_F6548? Error on F6548mW.m**-2stat.errordoublenullableFHaIntegrated flux for H{alpha} emission line (1)mW.m**-2phot.fluxdoublee_FHaError on FHamW.m**-2stat.errordoubleF6583? Integrated flux for [NII]{lambda}6583 emission line (1)mW.m**-2phot.fluxdoublenullablee_F6583? Error on F6583mW.m**-2stat.errordoublenullableF6716Integrated flux for [SII]{lambda}6716 emission line (1)mW.m**-2phot.fluxdoublee_F6716Error on F6716mW.m**-2stat.errordoubleF6731Integrated flux for [SII]{lambda}6731 emission line (1)mW.m**-2phot.fluxdoublee_F6731Error on F6731mW.m**-2stat.errordouble