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A photometric study of the Seyfert galaxies NGC 1566 and NGC 1068

University of British Columbia

Two dimensional photometry of NGC 1068 and NGC 1566 at visual and red wavelengths has been obtained. An H⍺ image of NGC 1068 has also been obtained. Decomposition of the luminosity profiles derived from the data shows that the inner region (r<18") of NGC 1566 consists of a nuclear point source component, a spheroidal bulge, and an exponential disk. Colors for each component are derived which show that the disk is redder at the outer edge than at the center The point source component is quite weak, contributing only 5% of the total light in an 8.5 aperture. A color map is also presented, showing an enhancement of red emission in the center and at the outer edges of the image. For NGC 1068, the profiles permit a bulge component to be determined for r<11". Subtraction of the seeing convolved bulge reveals a point source component in the red image. This feature is not observed in the visual image, due to obscuration by dust. The color map for NGC 1068 shows a strong color gradient in that the central region is much redder than the outer region, for r<18". There is also an enhancement in red light along the major axis that may describe a bar-like component.

Text

2010-03-20

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http://hdl.handle.net/2429/22217

Astronomy

University of British Columbia

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