English

Galactic Evolution along the Hubble Sequence.I. A grid of models parametrized by initial galaxy mass distribution

Astrophysics 2007-05-23 v1

Abstract

We present a generalization of the multiphase chemical evolution model applied to a wide set of theoretical galaxies with different masses and morphological types. This generalized set of models has been computed using the so-called Universal Rotation Curve from Persic, Salucci & Steel (1996) to calculate the radial mass distribution of 44 theoretical protogalaxies. This distribution is a fundamental input which, besides its own effect on the galaxy evolution, defines the characteristic collapse time scale or gas infall rate onto the disk. For each mass radial distribution, we have 10 different evolutionary rates. With these two hypotheses we construct a bi-parametric grid of models. The results include the time evolution of different regions of the disk and the halo along the galactocentric distance, measured by the gas and stellar masses, the star formation rate and chemical abundances of 15 elements.

Keywords

Cite

@article{arxiv.astro-ph/0302093,
  title  = {Galactic Evolution along the Hubble Sequence.I. A grid of models parametrized by initial galaxy mass distribution},
  author = {M. Molla and A. I. Diaz and F. Ferrini},
  journal= {arXiv preprint arXiv:astro-ph/0302093},
  year   = {2007}
}

Comments

Submmited to Astrophysical Journal

R2 v1 2026-07-22T08:20:04.648Z