Observable properties of non-axisymmetric galaxies | Zendy

G. Galletta | Zendy

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Observable properties of non-axisymmetric galaxies

Author(s) -

G. Galletta

Publication year - 1984

Publication title -

astrophysics and space science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.398

H-Index - 75

eISSN - 1572-946X

pISSN - 0004-640X

DOI - 10.1007/bf00650042

Subject(s) - physics , observable , flattening , astrophysics , galaxy , rotational symmetry , power law , elliptical galaxy , computational astrophysics , surface brightness , ellipsoid , cosmology , luminosity , astronomy , mechanics , quantum mechanics , statistics , mathematics

The analysis of triaxial, coaxial ellipsoids with different intrinsic axial ratios initiated in a previous paper is extended here, introducing an intrinsic distribution of light for each shell. The general properties of this model are studied, considering the analytical solutions for the projection along a line-of-sight in three theoretical cases: (1) dust-free systems; (2) dusty systems; and (3) luminous gaseous shells. The first case is then extended in order to predict some observable consequences. The observed properties of both an exponential and a power-law luminosity profile are compared with those of triaxial and axisymmetric systems. In addition, the variation of the central surface brightness and of the isophotal flattening at a fixed level with respect to the inclination of the Galaxy are analyzed

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