J/MNRAS/514/2769ivo://CDS.VizieR/J/MNRAS/514/2769doi:10.26093/cds/vizier/bg-g2-2phCDSKarera P.Drissen L.Martel H.Iglesias-Paramo J.Vilchez J.M.,Duc P.-A.Plana H.2026-02-27T20:02:37Z2025-06-06T12:36:59ZCDS support team

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

cds-question@unistra.frinteracting-galaxiesh-ii-regionsspectroscopyphotometryvisible-astronomyastrometrySpectral data cubes of the interacting pair of galaxies NGC 2535 and NGC 2536 (the Arp 82 system) targeting bright emission lines in the visible band, obtained with the imaging Fourier transform spectrometer (iFTS) SITELLE attached to the Canada-France-Hawaii Telescope (CFHT), are presented. Analysis of H{alpha} velocity maps reveals a bar in NGC2536. In NGC2535, we find strong non-circular motions outside the ocular ring, in the elliptical arc and tidal tails of NGC2535, and a misalignment between the kinematic and photometric position angles. We detect 155 H II region complexes in the interacting pair of galaxies and determine oxygen abundances for 66 of them using different calibrators. We find, regardless of the indicator used, that the oxygen abundance distribution in NGC2536 is shallow, whereas in NGC2535, it is best fitted by two slopes, the break occurring beyond the ocular ring. The inner slope is comparable to the one observed in isolated normal star-forming galaxies, but the outer slope is shallow. We present a numerical simulation of the interaction that reproduces the observed tidal features, kinematics, and metallicity distribution, to investigate the effect of the interaction on the galaxies. The model indicates that the galaxies have undergone a close encounter, strongly prograde for the primary, and are halfway in their course to a second close encounter.2022MNRAS.514.2769Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/514/2769CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/559/A114 : Updated O3N2 and N2 abundance indicators (Marino+, 2013)J/AJ/114/2402 : Rotation curves of early-type galaxies (Courteau+, 1997)J/ApJS/234/35 : Stellar population synthesis of clumpsVI/76 : Simulation Atlas of Tidal Features in Galaxies (Howard+ 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/514/2769https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/514/2769http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/514/2769https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/514/2769https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/514/2769http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/514/2769GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/514/2769/tablea1 (Positions and fluxes of the H II region complexes detected in Arp 82 above the 10{sigma} level with HIIphot algorithm)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/514/2769/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/514/2769/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/514/2769/tablea1?GETtext/xml+votable180.050000true122.8208325.208060.0055555555555555566/4839https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/514/2769?format=asciiOpticaldefaultJ/MNRAS/514/2769/tablea1Positions and fluxes of the H II region complexes detected in Arp 82 above the 10{sigma} level with HIIphot algorithmrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDHII region identifier number (ID)meta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFOIIl3727Flux density of the oxygen line [O II] at {lambda}{lambda}3727{AA} ([OII]{lambda}3727)1e-19W.m**-2phot.flux.density;spect.line;em.opt.Ufloate_FOIIl3727Mean uncertainty of FOIIl3727 (err[OII]{lambda}3727)1e-19W.m**-2stat.errorfloatFHbetaFlux density of the H{beta} line at 4861{AA} (H{beta})1e-19W.m**-2phot.flux.density;spect.line;em.line.Hbetafloate_FHbetaMean uncertainty of FHbeta (errH{beta})1e-19W.m**-2stat.errorfloatFOIIIl5007Flux density of the oxygen line [O III] at {lambda}{lambda}5007{AA} ([OIII]{lambda}5007)1e-19W.m**-2phot.flux.density;spect.line;em.line.OIIIfloate_FOIIIl5007Mean uncertainty of FOIIIl5007 (err[OIII]{lambda}5007)1e-19W.m**-2stat.errorfloatFHalphaFlux density of the H{alpha} line at 6562{AA} (H{alpha})1e-19W.m**-2phot.flux.density;spect.line;em.line.Halphafloate_FHalphaMean uncertainty of FHalpha (errH{alpha})1e-19W.m**-2stat.errorfloatFNIIl6583Flux density of the nitrogen line [N II] at {lambda}{lambda}6583{AA} ([NII]{lambda}6583)1e-19W.m**-2phot.flux.density;spect.line;em.opt.Rfloate_FNIIl6583Mean uncertainty of FNIIl6583 (err[NII]{lambda}6583)1e-19W.m**-2stat.errorfloatFSIIl6716Flux density of the sulfur line [S II] at {lambda}{lambda}6716{AA} ([SII]{lambda}6716)1e-19W.m**-2phot.flux.density;spect.line;em.opt.Rfloate_FSIIl6716Mean uncertainty of FSIIl6716 (err[SII]{lambda}6716)1e-19W.m**-2stat.errorfloatFSIIl6731Flux density of the sulfur line [S II] at {lambda}{lambda}6731{AA} ([SII]{lambda}6731)1e-19W.m**-2phot.flux.density;spect.line;em.opt.Rfloate_FSIIl6731Mean uncertainty of FSIIl6731 (err[SII]{lambda}6731)1e-19W.m**-2stat.errorfloat