Galaxy morphology in dissipative models

Using numerical simulations in the context of a simple dissipative model (Abadi et al. 1990) we study the final morphologies and dynamical properties of galaxies under different initial conditions. The proto-galaxies are embedded in dynamically relaxed potential wells of dark matter with different i...

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Detalles Bibliográficos
Autores principales: Mosconi, M.B., García-Lambas, D.
Formato: Articulo Comunicacion
Lenguaje:Español
Publicado: 1990
Materias:
Astronomía
Galaxia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/143161
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-143161
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Astronomía
Galaxia
spellingShingle Astronomía
Galaxia
Mosconi, M.B.
García-Lambas, D.
Galaxy morphology in dissipative models
topic_facet Astronomía
Galaxia
description Using numerical simulations in the context of a simple dissipative model (Abadi et al. 1990) we study the final morphologies and dynamical properties of galaxies under different initial conditions. The proto-galaxies are embedded in dynamically relaxed potential wells of dark matter with different initial spin parameters λ and velocity dispersions σ in the dissipative component. We find that both λ and σ control the final morphology of the galaxies. The angular momentum might be acquired by tidal torques, and several sources may account for the velocity dispersion. For instance, under the assumption that supernovae explosions provide kinetic energy to the medium giving σ ∼ 8 - 10 km/sec (Mc Kee and Ostriker 1977) our models suggest that the border line spin parameter between early and late types morphologies would be approximately λ ∼ 0.04.
format Articulo
Comunicacion
author Mosconi, M.B.
García-Lambas, D.
author_facet Mosconi, M.B.
García-Lambas, D.
author_sort Mosconi, M.B.
title Galaxy morphology in dissipative models
title_short Galaxy morphology in dissipative models
title_full Galaxy morphology in dissipative models
title_fullStr Galaxy morphology in dissipative models
title_full_unstemmed Galaxy morphology in dissipative models
title_sort galaxy morphology in dissipative models
publishDate 1990
url http://sedici.unlp.edu.ar/handle/10915/143161
work_keys_str_mv AT mosconimb galaxymorphologyindissipativemodels
AT garcialambasd galaxymorphologyindissipativemodels
bdutipo_str Repositorios
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