The deconvolution of brightness profiles of galaxies from seeing - Application to M32

Details The deconvolution of brightness profiles of galaxies from seeing - Application to M32 The deconvolution of brightness profiles of galaxies from seeing - Application to M32

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ap%26ss..83..239b&link_type=abstract

Astrophysics and Space Science, vol. 83, no. 1-2, Apr. 1982, p. 239-246.

Astronomy and Astrophysics

Astrophysics

16

Andromeda Galaxy, Brightness Distribution, Galactic Radiation, Point Spread Functions, Spiral Galaxies, Convolution Integrals, Electrophotometry, Elliptical Galaxies, Normal Density Functions

Scientific paper

The integral equation relating the brightness distribution in a galaxy to that in its image formed by an optical system characterized by a Gaussian (or a sum of Gaussians) point-spread function is derived. Since the solution of this equation, attainable by any classical method, is numerically unstable, an approximate and stable solution is obtained by a first order regularization in Tikhonov's sense. For the bright spike the application to M32 gives a radius of 2.1 arcsec, a central surface brightness of 13.10 V mag/sq arcsec, and a 12 V integrated magnitude.

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