Dwarf galaxies and the cosmic chemical matter cycle
- Author(s)
- G. Hensler, S. Recchi
- Abstract
To understand the lower element abundances of Dwarf Galaxies (DGs) according to a mass-
metallicity relation, gas loss through galactic winds is commonly invoked. For simplification, the
galactic mass arises to become the principal parameter affecting the chemical evolution of DGs. In
contrast, mixing effects between the gas phases, the gas distribution and its state strongly influence
the mass loss efficiency. In addition, environmental processes as e.g. gas infall and external
tides also contribute to the chemical evolution. In particular, at low gravitational energies as in
DGs energetic effects dominate the evolution and enhance the chemical and structural signatures.
Dynamics and gas-phase mixing processes determine the galactic chemical evolution and must,
therefore, be treated properly, and studied in detail.
By means of a 2D and recently developed 3D chemo-dynamical treatment of galaxy evolution
we explore the influence of different internal and environmental processes on the structure and
element abundances from numerical models of DGs. Here we can present only two results of our
multiple diverse studies, which demonstrate that detailed explorations of the various processes
and their intimate coupling with chemical elements are necessary to account for the evolutionary
history of galaxies.- Organisation(s)
- Department of Astrophysics
- Journal
- Proceedings of Science (PoS)
- Volume
- 146
- Pages
- 196
- DOI
- https://doi.org/10.22323/1.146.0196
- Publication date
- 2013
- Austrian Fields of Science 2012
- 103004 Astrophysics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/5e1d5175-c896-4677-8bad-8f33efe0be82