Abstract
A general discussion, based on the “Fourier Slice Theorem,” is given for the problem of deprojecting the observed light distribution of galaxies to obtain their intrinsic three dimensional light distribution or “shape.” Several results are obtained: 1) A model-independent deprojection of an axially symmetric galaxy is shown to be possible only if the symmetry axis lies in the plane of the sky. 2) A simple criterion is given to test whether two different galaxies can have the same intrinsic shape, based solely on their observed projections. 3) It is shown that a homogeneous class of galaxies can be deprojected using a sufficiently large number of projections of random perspective.
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References
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© 1987 IAU
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Rybicki, G.B. (1987). Deprojection of Galaxies: How much can be Learned?. In: De Zeeuw, T. (eds) Structure and Dynamics of Elliptical Galaxies. International Astronimical Union, vol 127. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3971-4_41
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DOI: https://doi.org/10.1007/978-94-009-3971-4_41
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-277-2586-8
Online ISBN: 978-94-009-3971-4
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