NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-16 T00:19:14 PDT
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For refcode 2014A&A...571A..98C:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2014A&A...571A..98C Three-dimensional decomposition of galaxies with bulge and long bar Compere, P.; Lopez-Corredoira, M.; Garzon, F. Abstract. Context. Some observations indicate that the Milky Way has two inner components, a bulge and a long bar, which present a misalignment of Deltaalpha ~= 20^degree^ that is against the predictions of some theoretical models that are based on numerical simulations. Aims: We wish to determine whether this misalignment between the bar and the bulge can be observed in barred galaxies other than the Milky Way. Methods: Each galaxy of our sample was decomposed based on its K_s_-band 2MASS image by fitting and modelling in a three-dimensional (3D) space the following components: a disc, a bar, and a bulge. The chi^2^ goodness-of-fit estimation allowed retrieving the best-fit angle values for the bar and the bulge to detect any misalignment. Results: From the 3D decomposition of six barred galaxies, we have detected at least three galaxies (NGC 2217, NGC 3992, and NGC 4593) that present a significant misalignment between the bar and the bulge of Deltaalpha> 20^degree^. Key words: galaxies: structure, galaxies: bulges, galaxies: fundamental parameters, Galaxy: structure
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