Bibcode
Ryś, A.; Falcón-Barroso, J.; van de Ven, G.
Bibliographical reference
Highlights of Astronomy, Volume 16, pp. 334-334
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3
2015
Citations
0
Refereed citations
0
Description
In our contribution we show the effects of environmental evolution on
cluster and field dwarf elliptical galaxies (dEs), presenting the first
large-scale integral-field spectroscopic data for this galaxy class. Our
sample con sists of 12 galaxies and no two of them are alike. We find
that the level of rotation is not tied to flattening; we observe
kinematic twists; we discover large-scale kinematically-decoupled
components; we see varying gradient s in line-strength maps: from nearly
flat to strongly peaked in the center. The great variety of
morphological, kinematic, and stellar population parameters seen in our
data supports the claim that dEs are defunct dwarf spiral/irregular
galaxies and points to a formation scenario that allows for a stochastic
shaping of galaxy properties. The combined influence of ram-pressure
stripping and harassment fulfills these requirements, still, the exact
impact of the two is not yet understood. We further investigate the
properties of our sample by performing a detailed comprehensive analysis
of its kinematic, dynamical, and stellar population parameters. The
combined knowledge of the dynamical properties and star-formation
histories, together with model predictions for different formation
mechanisms, will be used to quant itatively determine the actual
transformation paths for these galaxies.