J/A+A/582/A21ivo://CDS.VizieR/J/A+A/582/A21doi:10.26093/cds/vizier.35820021CDSBarrera-Ballesteros J.K.Garcia-Lorenzo B.Falcon-Barroso J.,Van De Ven G.Lyubenova M.Wild V.Mendez-Abreu J.Sanchez S.F.,Marquez I.Masegosa J.Monreal-Ibero A.Ziegler B.Del Olmo A.,Verdes-Montenegro L.Garcia-Benito R.Husemann B.Mast D.Kehrig C.,Iglesias-Paramo J.Marino R.A.Aguerri J.A.L.Walcher C.J.,Vilchez J.M.Bomans D.J.Cortijo-Ferrero C.Gonzalez Delgado R.M.,Bland-hawthorn J.Mcintosh D.H.Bekeraite S.(the Califa collaboration)2017-11-29T11:48:25Z2016-02-23T08:09:13ZCDS support team

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

cds-question@unistra.frgalaxiesradial-velocityWe present spatially resolved stellar and/or ionized gas kinematic properties for a sample of 103 interacting galaxies, tracing all merger stages: close companions, pairs with morphological signatures of interaction, and coalesced merger remnants. In order to distinguish kinematic properties caused by a merger event from those driven by internal processes, we compare our galaxies with a control sample of 80 non-interacting galaxies. We measure for both the stellar and the ionized gas components the major (projected) kinematic position angles (PA_kin_, approaching and receding) directly from the velocity distributions with no assumptions on the internal motions. This method also allow us to derive the deviations of the kinematic PAs from a straight line ({delta}PA_kin_). We find that around half of the interacting objects show morpho-kinematic PA misalignments that cannot be found in the control sample. In particular, we observe those misalignments in galaxies with morphological signatures of interaction. On the other hand, the level of alignment between the approaching and receding sides for both samples is similar, with most of the galaxies displaying small misalignments. Radial deviations of the kinematic PA orientation from a straight line in the stellar component measured by {delta}PA_kin_ are large for both samples. However, for a large fraction of interacting galaxies the ionized gas {delta}PA_kin_ is larger than the typical values derived from isolated galaxies (48%), indicating that this parameter is a good indicator to trace the impact of interaction and mergers in the internal motions of galaxies. By comparing the stellar and ionized gas kinematic PA, we find that 42% (28/66) of the interacting galaxies have misalignments larger than 16{deg}, compared to 10% from the control sample. Our results show the impact of interactions in the motion of stellar and ionized gas as well as the wide the variety of their spatially resolved kinematic distributions. This study also provides a local Universe benchmark for kinematic studies in merging galaxies at high redshift.2015A&A...582A..21Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/582/A21CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/581/A103 : CALIFA survey across the Hubble sequence (Gonzalez+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/582/A21https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/582/A21http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/582/A21https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/582/A21https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/582/A21http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/582/A21GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/582/A21/tablea3Ionized gas kinematic properties of the interacting sample selected for this study included in the CALIFA surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCALIFA identification numbermeta.idintVsys? Systemic velocity (1)km/sphys.velocintnullablee_Vsys? rms uncertainty on Vsyskm/sstat.errorintnullabler? Radius used to average the polar coordinates of the positions from the lines of nodes (see Sect. 2.5 for details)arcsecphys.angSize;stat.meanintnullablePAmorph(r)? Morphological PA inferred by fitting an ellipse to an isophote at radius r in the r-band SDSS imagdegpos.posAngfloatnullablee_PAmorph(r)? rms uncertainty on PAmorph(r)degstat.errorfloatnullablePAkinApp? Kinematic PA at radius r for the approaching side (see Sect. 2.5 for details)degpos.posAngfloatnullablee_PAkinApp? rms uncertainty on PAkinAppdegstat.errorfloatnullabledPAkinApp? Standard deviation of Kinematic PA at radius r for the approaching sidedegpos.posAngfloatnullablee_dPAkinApp? rms uncertainty on dPAkinAppdegstat.errorfloatnullablePAkinRec? Kinematic PA at radius r for the receding sidedegpos.posAngfloatnullablee_PAkinRec? rms uncertainty on PAkinRecdegstat.errorfloatnullabledPAkinRec? Standard deviation of kinematic PA at radius r for the receding sidedegpos.posAngfloatnullablee_dPAkinRec? rms uncertainty on dPAkinRecdegstat.errorfloatnullablephim-kApp? Morpho-kinematic misalignments for the approaching sidedegpos.angDistancefloatnullablee_phim-kApp? rms uncertainty on phim-kAppdegstat.errorfloatnullablen_phim-kApp[*] Note on phim-kApp (2)meta.notecharphim-kRec? Morpho-kinematic misalignments for the receding sidedegpos.angDistancefloatnullablee_phim-kRec? rms uncertainty on phim-kRecdegstat.errorfloatnullablen_phim-kRec[*] Note on phim-kRec (2)meta.notecharphik-k? Kinematic misalignment between the receding and the approaching sidedegpos.angDistancefloatnullablee_phik-k? rms uncertainty on phik-kdegstat.errorfloatnullablen_phik-k[*] Note on phik-k (2)meta.notecharJ/A+A/582/A21/tablea4Kinematic (mis)alignment between the stellar and the ionised gas components for the galaxies included in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCALIFA identification numbermeta.idintphig-sApp? Kinematic misalignment between the stellar and ionised gas kinematic PA for the approaching sidedegpos.angDistancefloatnullablee_phig-sApp? rms uncertainty on phig-sAppdegstat.errorfloatnullablephig-sRec? Kinematic misalignment between the stellar and ionised gas kinematic PA for the receding sidedegpos.angDistancefloatnullablee_phig-sRec? rms uncertainty on phig-sAppdegstat.errorfloatnullableJ/A+A/582/A21/tablea1Morphological parameters of the sample of interacting CALIFA galaxies used in this studySimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCALIFA identification number (1)meta.idintNameNamemeta.id;meta.maincharMTypeMorphological type from visual classification (2)src.morph.typecharIStageInteraction stage (3)meta.codeintIStage2? Alternative interaction stage for galaxies with uncertain interaction stage (3)meta.codeintnullablelogMassStellar mass (2)log(solMass)phys.massfloatJ/A+A/582/A21/tablea2Stellar kinematic properties of the interacting sample selected for this study included in the CALIFA surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCALIFA identification numbermeta.idintVsys? Systemic velocity (1)km/sphys.velocintnullablee_Vsys? rms uncertainty on Vsyskm/sstat.errorintnullabler? Radius used to average the polar coordinates of the positions from the lines of nodes (see Sect. 2.5 for details)arcsecphys.angSize;stat.meanintnullablePAmorph(r)? Morphological PA inferred by fitting an ellipse to an isophote at radius r in the r-band SDSS imagdegpos.posAngfloatnullablee_PAmorph(r)? rms uncertainty on PAmorph(r)degstat.errorfloatnullablePAkinApp? Kinematic PA at radius r for the approaching side (see Sect. 2.5 for details)degpos.posAngfloatnullablee_PAkinApp? rms uncertainty on PAkinAppdegstat.errorfloatnullabledPAkinApp? Standard deviation of Kinematic PA at radius r for the approaching sidedegpos.posAngfloatnullablee_dPAkinApp? rms uncertainty on dPAkinAppdegstat.errorfloatnullablePAkinRec? Kinematic PA at radius r for the receding sidedegpos.posAngfloatnullablee_PAkinRec? rms uncertainty on PAkinRecdegstat.errorfloatnullabledPAkinRec? Standard deviation of kinematic PA at radius r for the receding sidedegpos.posAngfloatnullablee_dPAkinRec? rms uncertainty on dPAkinRecdegstat.errorfloatnullablephim-kApp? Morpho-kinematic misalignments for the approaching sidedegpos.angDistancefloatnullablee_phim-kApp? rms uncertainty on phim-kAppdegstat.errorfloatnullablen_phim-kApp[*] Note on phim-kApp (2)meta.notecharphim-kRec? Morpho-kinematic misalignments for the receding sidedegpos.angDistancefloatnullablee_phim-kRec? rms uncertainty on phim-kRecdegstat.errorfloatnullablen_phim-kRec[*] Note on phim-kRec (2)meta.notecharphik-k? Kinematic misalignment between the receding and the approaching sidedegpos.angDistancefloatnullablee_phik-k? rms uncertainty on phik-kdegstat.errorfloatnullablen_phik-k[*] Note on phik-k (2)meta.notechar