The dynamics of dwarf elliptical galaxies

Details The dynamics of dwarf elliptical galaxies The dynamics of dwarf elliptical galaxies

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003msngr.112...47d&link_type=abstract

The Messenger (ISSN 0722-6691), No. 112, p. 47 - 50 (June 2003)

Computer Science

Dwarf Elliptical Galaxies, Dynamics

Scientific paper

In the course of this Large Program, we have assembled kinematics of unprecedented high quality of a sample of 15 dEs. All data have been reduced and analysed, and the last few objects are being modelled. Thanks to the high spatial and spectral resolution of our observations, we have uncovered the existence of dEs with complex behavior and internal structures (such as embedded stellar discs) that are hard to fit into a simple scenario in which dEs form through the collapse of primordial density fluctuations, like the wind model. Clearly, dEs are anything but small 'island universes' that evolve in splendid isolation: their evolution appears determined, at least in part, by their environment. Thus, the harassment scenario offers an attractive explanation for many observed features that are hard to explain with the wind model.

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