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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3677
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dc.contributor.authorDas, Mousumi-
dc.contributor.authorLaurikainen, E.-
dc.contributor.authorSalo, H.-
dc.contributor.authorButa, R.-
dc.date.accessioned2008-12-03T11:04:46Z-
dc.date.available2008-12-03T11:04:46Z-
dc.date.issued2008-10-
dc.identifier.citationAstrophysics and Space Science, 2008, Vol.317, p163en
dc.identifier.issn0004-640X (print)-
dc.identifier.issn1572-946X (online)-
dc.identifier.urihttp://hdl.handle.net/2289/3677-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractWe investigate the variation of bar strength with central velocity dispersion in a sample of barred spiral galaxies. The bar strength is characterized by Q g , the maximal tangential perturbation associated with the bar, normalized by the mean axisymmetric force. It is derived from the galaxy potentials which are obtained using near-infrared images of the galaxies. However, Q g is sensitive to bulge mass. Hence we also estimated bar strengths from the relative Fourier intensity amplitude (A 2) of bars in near-infrared images. The central velocity dispersions were obtained from integral field spectroscopy observations of the velocity fields in the centers of these galaxies; it was normalized by the rotation curve amplitude obtained from HI line width for each galaxy. We found a correlation between bar strengths (both Q g and A 2) and the normalized central velocity dispersions in our sample. This suggests that bars weaken as their central components become kinematically hotter. This may have important implications for the secular evolution of barred galaxies.en
dc.language.isoenen
dc.publisherSpringeren
dc.relation.urihttp://adsabs.harvard.edu/abs/2008Ap&SS.317..163Den
dc.relation.urihttp://arxiv.org/abs/0807.2699en
dc.relation.urihttp://dx.doi.org/10.1007/s10509-008-9873-9en
dc.rights2008 Springeren
dc.subjectSpiral galaxiesen
dc.subjectGalaxy structureen
dc.subjectGalaxy nucleien
dc.subjectGalaxy evolutionen
dc.subjectGalaxy dynamicsen
dc.titleVariation of bar strength with central velocity dispersion in spiral galaxiesen
dc.typeArticleen
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