Nuclear structure of M87

Details Nuclear structure of M87 Nuclear structure of M87

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...134...99z&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 134, no. 1, May 1984, p. 99-104.

Astronomy and Astrophysics

Astrophysics

8

Elliptical Galaxies, Galactic Nuclei, Galactic Structure, Astronomical Photography, Astronomical Photometry, Brightness, Convolution Integrals, Point Spread Functions

Scientific paper

A deconvolved brightness profile of the galaxy M87 is derived from photographic and CCD photometric data with Point Spread Function (PSF), and a suitable modification of the convolution integral equation is used to test the star-like and extended Gaussian hypotheses concerning the nucleus. The 'no-spike' hypothesis, which gives a larger spread of the residuals, is also tested. The influence of the wings of the PSF is analyzed by deconvolution from a 1-to-4 Gaussian fit of the star profile. It is concluded that overall information about the galaxy can be derived with the present analysis from an incomplete knowledge of the PSF.

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