Evidence of fast rotation in dwarf elliptical galaxies

Abstract

In this Paper we investigate the kinematical properties of early-type dwarfs by significantly enlarging the scarce observational sample so far available. We present rotation curves and mean velocity dispersions for four bright dwarf ellipticals and two dwarf lenticular galaxies in the Virgo cluster. Most of these galaxies exhibit conspicuous rotation curves. In particular, five out of the six new galaxies are found to be close to the predictions for oblate spheroids flattened by rotation. Therefore, and contrary to the previous observational hints, the present data suggest that an important fraction of dwarf early-type galaxies may be rotationally supported.

arXiv comment5 pages, 4 figures, MNRAS accepted

References in corpus (6)

• Morphological Transformation from Galaxy Harassment
• Dynamics and the Origin of Low-Mass Galaxies in the Virgo Cluster
• The evolution and star formation of dwarf galaxies in the Fornax Cluster
• Line-Strength Indices in Bright Spheroidals: Evidence for a Stellar Population Dichotomy between Spheroidal and Elliptical Galaxies
• Line-of-sight velocity distributions of low-luminosity elliptical galaxies
• The Shapes and Ages of Elliptical Galaxies

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