Seeing effects in the core of elliptical galaxies

Details Seeing effects in the core of elliptical galaxies Seeing effects in the core of elliptical galaxies

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jsar....5...77y&link_type=abstract

Journal of Space and Astronomy Research (ISSN 1012-3431), vol. 5, Feb. 1988, p. 77-92.

Astronomy and Astrophysics

Astronomy

Elliptical Galaxies, Galactic Nuclei, Isophotes, Light Transmission, Point Spread Functions, Dimming, Gauss Equation, Light Scattering, Luminous Intensity

Scientific paper

The influence of the shape of the point-spread function on isophotal shape and central dimmings is studied for the de Vaucouleurs model. Two types of functions are used to represent the point-spread function. The first form is a pure Gaussian function, whereas the second has exponential wings attached to the Gaussian core. It is found that the Gaussian point-spread function gives less significant seeing effects than the second form, which provides a better approximation to the photographic stellar intensity profile. In addition, the amount of light displaced from the galactic central region due to convolution is examined.

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