Velocity anisotropies and isophote shapes in elliptical galaxies

Details Velocity anisotropies and isophote shapes in elliptical galaxies Velocity anisotropies and isophote shapes in elliptical galaxies

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...193l...7b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 193, no. 1-2, March 1988, p. L7-L10.

Astronomy and Astrophysics

Astrophysics

162

Angular Velocity, Elliptical Galaxies, Galactic Rotation, Galactic Structure, Anisotropy, Isophotes, Spectrograms

Scientific paper

Rotation and velocity dispersion data are presented for 17 elliptical galaxies for which no or only insufficient measurements were available. Using data from the literature, the relation between velocity anisotropies and isophote shapes in elliptical galaxies is investigated. It is found that elliptical galaxies most likely can be separated into two classes. Objects having peaked isophotes (indicating weak disk components) are in general consistent with being rotationally flattened, suggesting that these objects are similar to S0 galaxies. In contrast, elliptical galaxies with box-shaped isophotes frequently owe their shape to anisotropies in their velocity dispersion and most likely are triaxial.

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