Statistics – Computation
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..366m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 2, Jan. 1992, p. 366-373.
Statistics
Computation
69
Computational Astrophysics, Elliptical Galaxies, Galactic Structure, Radial Velocity, Gauss Equation, Image Processing, Stellar Models
Scientific paper
In this paper, it is shown that, if the spatial light intensity and angular velocity of a cylindrically-rotating elliptical galaxy are both represented by sums of centered Gaussians functions, constant on homothetic triaxial ellipsoids, then the observed isophotes and isoradial velocities, for an arbitrary line of sight and with a point-spread function also represented by a sum of Gaussians, can be derived from their spatial counterparts by simple analytical formulas. The inverse problem of deriving the spatial parameters from the observed ones is studied, and three-dimensional deconvolution of the surface brightness and the radial velocity field are obtained, when the point-spread function is a single Gaussian.
Bacon Roland
Emsellem Eric
Monnet Guy
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