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- W2003122826 abstract "We present new near- and mid-infrared high angular resolution spectroscopic and imaging data of the nuclear region of NGC 7552. This galaxy is a face-on barred spiral galaxy with several circumnuclear rings. Our near-infrared images have subarcsecond resolution and reveal the spatial distribution of the J (1.25 μm), H (1.60 μm), K (2.20 μm) continuum and most of the prominent near-infrared K-band lines (Brγ, He I, H2 in emission and 12CO,13CO in absorption). Our N-band (10.5 μm) continuum image has an angular resolution of about 1'' and corresponds very well in structure with the JHK color maps and a published 6 cm radio continuum map. The data are combined with radio and far-infrared data available in the literature and interpreted in the framework of a starburst model. The result of the starburst model is used in connection with published near-infrared template star spectra to perform a spectral synthesis for the very nucleus as well as for selected regions in it. As a result we obtain a first insight into the different star formation histories of the nucleus and the 1 kpc circumnuclear ring. We also demonstrate that the star formation rate and efficiency are intimately associated with the dynamics of the stars and gas in the nucleus of NGC 7552." @default.
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- W2003122826 date "1997-10-10" @default.
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- W2003122826 title "The Circumnuclear Starburst in NGC 7552: First Results from Near‐Infrared Spectral Synthesis" @default.
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- W2003122826 doi "https://doi.org/10.1086/304687" @default.
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