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dc.contributor.authorWalo Martín, Daniel
dc.contributor.authorPérez Martín, María Isabel 
dc.date.accessioned2022-06-15T09:03:15Z
dc.date.available2022-06-15T09:03:15Z
dc.date.issued2022-03-23
dc.identifier.citationDaniel Walo-Martín... [et al.]. Local variations of the stellar velocity ellipsoid – II. The effect of the bar in the inner regions of Auriga galaxies, Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 3, July 2022, Pages 4587–4604, [https://doi.org/10.1093/mnras/stac769]es_ES
dc.identifier.urihttp://hdl.handle.net/10481/75503
dc.description.abstractTheoretical works have shown that off-plane motions of bars can heat stars in the vertical direction during buckling but is not clear how do they affect the rest of components of the stellar velocity ellipsoid (SVE). We study the 2D spatial distribution of the vertical, sigma(z), azimuthal, sigma(phi), and radial, sigma(r) velocity dispersions in the inner regions of Auriga galaxies, a set of high-resolution magneto-hydrodynamical cosmological zoom-in simulations, to unveil the influence of the bar on the stellar kinematics. sigma(z) and sigma(phi) maps exhibit non-axisymmetric features that closely match the bar light distribution with low-sigma regions along the bar major axis and high values in the perpendicular direction. On the other hand, sigma(r) velocity dispersion maps present more axisymmetric distributions. We show that isophotal profile differences best capture the impact of the bar on the three SVE components providing strong correlations with bar morphology proxies although there is no relation with individual sigma. Time evolution analysis shows that these differences are a consequence of the bar formation and that they tightly coevolve with the strength of the bar. We discuss the presence of different behaviours of sigma(z) and its connection with observations. This work helps us understand the intrinsic sigma distribution and motivates the use of isophotal profiles as a mean to quantify the effect of bars.es_ES
dc.description.sponsorshipSpanish Government PID2019-107427GB-C32es_ES
dc.description.sponsorshipConsejeria de Economia, Industria, Comercio y Conocimiento of the Canary Islands Autonomous Communityes_ES
dc.description.sponsorshipSpanish Ministry of Science and Innovation (MICINN) through the Spanish State Research Agency, under the Severo Ochoa Program CEX2019-000920-Ses_ES
dc.language.isoenges_ES
dc.publisherOxford University Presses_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectGalaxies: evolutiones_ES
dc.subjectGalaxies: formationes_ES
dc.subjectGalaxies: generales_ES
dc.subjectGalaxies: kinematics and dynamicses_ES
dc.subjectGalaxies: spirales_ES
dc.titleLocal variations of the stellar velocity ellipsoid –II. The effect of the bar in the inner regions of Auriga galaxieses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1093/mnras/stac769
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones_ES


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