Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...166...53d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 166, no. 1-2, Sept. 1986, p. 53-74.
Astronomy and Astrophysics
Astrophysics
105
Elliptical Galaxies, Galactic Structure, Mass Distribution, Color, Halos, Interstellar Gas, Spheroids, Spiral Galaxies
Scientific paper
The effect of the potential of the E-galaxy on the formation and morphology of shells is investigated using a simulation of a merger between a massive elliptical galaxy and a small companion of both spiral and elliptical types. It is observed that the concentrated distribution of mass is not compatible with several of the shell systems observed around galaxies; the three-dimensional shape of the E-galaxy determines the shell geometry; and shells form more frequently and with more contrast around prolate than oblate galaxies. It is noted that the merger between a massive E-galaxy and a small elliptical or spiral companion does form shells, and both the radial distribution and the geometry of the shells are independent of the companion type.
Combes François
Dupraz Christophe
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