Bi-Dimensional Hα Photometry Over the Nuclear Region of NGC1068

Details Bi-Dimensional Hα Photometry Over the Nuclear Region of NGC1068 Bi-Dimensional Hα Photometry Over the Nuclear Region of NGC1068

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26as...43..231a&link_type=abstract

Astronomy and Astrophysics Supplement, Vol. 43, P. 231, 1981

Astronomy and Astrophysics

Astrophysics

11

Scientific paper

In this study we present the results of an electronographic bi-dimensional photometry in the Hα line over the inner 4 arcsec radius region of the Seyfert galaxy NGC 1068. We derive the luminosity distribution of the ionized gaseous component and that of the stellar continuum, and find a steep increase of their ratio towards the centre. The isophotes of the gaseous component in the region further than 100 pc are definitely not axisymmetrical, being elongated in the NE quadrant and slightly along the southern direction. Regarding the cloud complex in the region from 100 pc up to 600 pc, the spatial structure of the velocity field in the NE quadrant may indicate an ejection mechanism as its origin. An additional spectrophotometric analysis around the Hα, [N II] , and [S II] lines, and covering the plane at P.A. intervals of 30°, is discussed. Its main result concerns the mixing length for heavy elements' enrichment from the centre, which is found to be certainly less than 600 pc.

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