Summary
We present a study of the stars and ionised gas in the central kpc of the Seyfert 2 galaxy NGC 1358, using three-dimensional imaging spectroscopy obtained with OASIS (CFHT). We have derived both stellar and gaseous kinematical maps, including higher order Gauss-Hermite stellar velocity moments. Emission line (H<, Hβ [OIII], [NII]) and emission line ratios ([OIII]/Hβand [SII]/Hα) maps have also been derived. These data reveal an inner gaseous spiral structure (size < 1 kpc) which clearly shows up as a perturbation in the ionised gas kinematic maps, but is not seen in the stellar velocity maps. The presence of an inner bar could explain this feature. Simple dynamical models are built to constrain the mass-to-light ratio of the galaxy and the properties of the presumed inner bar.
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© 2007 Springer-Verlag Berlin Heidelberg
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Dumas, G., Emsellem, E., Ferruit, P. (2007). A 3D View of the Central Kiloparsec of the Seyfert Galaxy NGC 1358. In: Kissler-Patig, M., Walsh, J.R., Roth, M.M. (eds) Science Perspectives for 3D Spectroscopy. Eso Astrophysics Symposia European Southern Observatory. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73491-8_43
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DOI: https://doi.org/10.1007/978-3-540-73491-8_43
Publisher Name: Springer, Berlin, Heidelberg
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Online ISBN: 978-3-540-73491-8
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