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dc.contributor.authorBarrera-Ballesteros, J. K.
dc.contributor.authorGarcía-Lorenzo, B.
dc.contributor.authorFalcón-Barroso, J.
dc.contributor.authorvan de Ven, G.
dc.contributor.authorLyubenova, M.
dc.contributor.authorWild, V.
dc.contributor.authorMéndez-Abreu, J.
dc.contributor.authorSánchez, S. F.
dc.contributor.authorMarquez, I.
dc.contributor.authorMasegosa, J.
dc.contributor.authorMonreal-Ibero, A.
dc.contributor.authorZiegler, B.
dc.contributor.authordel Olmo, A.
dc.contributor.authorVerdes-Montenegro, L.
dc.contributor.authorGarcía-Benito, R.
dc.contributor.authorHusemann, B.
dc.contributor.authorMast, D.
dc.contributor.authorKehrig, C.
dc.contributor.authorIglesias-Paramo, J.
dc.contributor.authorMarino, R. A.
dc.contributor.authorAguerri, J. A. L.
dc.contributor.authorWalcher, C. J.
dc.contributor.authorVílchez, J. M.
dc.contributor.authorBomans, D. J.
dc.contributor.authorCortijo-Ferrero, C.
dc.contributor.authorGonzález Delgado, R. M.
dc.contributor.authorBland-Hawthorn, J.
dc.contributor.authorMcIntosh, D. H.
dc.contributor.authorBekeraitė, S.
dc.identifier.citationBarrera-Ballesteros , J K , García-Lorenzo , B , Falcón-Barroso , J , van de Ven , G , Lyubenova , M , Wild , V , Méndez-Abreu , J , Sánchez , S F , Marquez , I , Masegosa , J , Monreal-Ibero , A , Ziegler , B , del Olmo , A , Verdes-Montenegro , L , García-Benito , R , Husemann , B , Mast , D , Kehrig , C , Iglesias-Paramo , J , Marino , R A , Aguerri , J A L , Walcher , C J , Vílchez , J M , Bomans , D J , Cortijo-Ferrero , C , González Delgado , R M , Bland-Hawthorn , J , McIntosh , D H & Bekeraitė , S 2015 , ' Tracing kinematic (mis)alignments in CALIFA merging galaxies : Stellar and ionized gas kinematic orientations at every merger stage ' Astronomy & Astrophysics , vol. 582 , A21 .
dc.identifier.otherPURE: 197940160
dc.identifier.otherPURE UUID: 48b0fb7d-f1e4-4140-b241-dfbfea0249d5
dc.identifier.otherBibCode: 2015arXiv150603819B
dc.identifier.otherBibCode: 2015A&A...582A..21B
dc.identifier.otherScopus: 84943251454
dc.descriptionJ.M.A. and V.W. acknowledge support from the European Research Council Starting Grant (SEDmorph; P.I. V. Wild).en
dc.description.abstractWe 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 (PAkin, 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 (δPAkin). 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 δPAkin are large for both samples. However, for a large fraction of interacting galaxies the ionized gas δPAkin 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°, 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.
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rights© ESO, 2015. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: kinematicsen
dc.subjectGalaxies: interactionsen
dc.subjectGalaxies: statisticsen
dc.subjectQC Physicsen
dc.titleTracing kinematic (mis)alignments in CALIFA merging galaxies : Stellar and ionized gas kinematic orientations at every merger stageen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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