Abstract
Simultaneous bidimensional spectroscopy of the circumnuclear region (12″ × 9″) of the active galaxy NGC 7331 has been obtained using an optical fibre system (2D-FIS). We have used these data to obtain the Mg2 index map of the centre of this galaxy. A radial variation from 0.32 (centre) to 0.25 (r = 6″) was found, which supports the hypothesis that there has been large-scale star formation at the centre of NGC 7331.
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© 1997 Springer-Verlag Berlin Heidelberg
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del Burgo, C., Mediavilla, E., Arribas, S., García-Lorenzo, B. (1997). Mg2 Index Map of the Centre of NGC 7331. In: Clements, D.L., Pérez-Fournon, I. (eds) Quasar Hosts. ESO Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-69648-3_30
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DOI: https://doi.org/10.1007/978-3-540-69648-3_30
Publisher Name: Springer, Berlin, Heidelberg
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