Comparison of the ellipticity profiles of E and S0 galaxies

Details Comparison of the ellipticity profiles of E and S0 galaxies Comparison of the ellipticity profiles of E and S0 galaxies

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...140l..39m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 140, no. 2, Nov. 1984, p. L39-L42.

Astronomy and Astrophysics

Astrophysics

18

Elliptical Galaxies, Galactic Structure, Spiral Galaxies, Ellipticity, Statistical Tests

Scientific paper

A series of new observations, together with data from the literature, are used in a comparative study of ellipticity profiles for S0 and E galaxies. Attention is drawn to the similarity between the profiles of E objects flatter than E3, and those of S0 galaxies having similar apparent flattening. It is inferred that the elliptical galaxies have a two-component structure akin to the bulge-plus-disk structure of S0, although their flatter component is probably less bright, or less extended, or less thin, than a typical disk. Since the bulges of lenticular objects are probably oblate spheroids, the similarity may be taken as supporting oblateness in elliptical galaxies.

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