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2000MNRAS.316....1W - Mon. Not. R. Astron. Soc., 316, 1-18 (2000/July-3)
Extended gas in Seyfert galaxies: near-infrared observations of 15 active nuclei.
WINGE C., STORCHI-BERGMANN T., WARD M.J. and WILSON A.S.
Abstract (from CDS):
From analysis of the spatial distribution of the continuum (J-H) and (H-K) colours derived from our spectra, we find redder colours for the nucleus than for the nearby bulge in most of the Seyfert 2s observed. Comparison with models including emission from dust and stars shows that hot (T∼1000K) dust emission dominates the nuclear continuum in NGC1365, NGC2110, NGC3281, NGC7582 and ESO 362-G18. In NGC1386, 5643 and 5728 the main contributor is the underlying stellar population, combined with some foreground reddening and/or cooler dust emission. In a few cases, the (J-H) colours on opposite sides of the nucleus differ by 0.3-0.8mag, an effect that we interpret as partly resulting from differences in the local stellar population, and possibly extinction gradients.
Abstract Copyright: The Royal Astronomical Society
Journal keyword(s): galaxies: active - galaxies: Seyfert - infrared: galaxies
Simbad objects: 17
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