2009/03/05 by M. Gavilan, Gavilan, M., M. Molla +3
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.0903.0932
7 pages, 4 figures, Star-forming Dwarf Galaxies: Ariadne's Thread in the Cosmic Labyrinth
arxiv created 2009/03/05 · arxiv updated 2009/12/01
We have developed a grid of chemical evolution models applied to dwarf isolated galaxies, using \citegav05 yields. The input data enclose different star formation efficiencies, galaxy mass and collapse time values. The result is a wide collection of solutions that vary from objects with low metallicity and great amount of gas, to those with little gas and high metallicity. No environmental effects like tidal or galactic winds have been treated, so these objects are expected to be close to field dwarf galaxies, more than cluster ones. We have studied the time evolution of the abundance of oxygen and nitrogen and the amount of gas, related to their star formation history, as well as the possibility of gas losses by SN winds.