NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-24 T13:22:34 PDT
Help | Comment | NED Home

For refcode 2013MNRAS.434.2491G:
Retrieve 61 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Royal Astronomical Society. 2013MNRAS.434.2491G The chemical case for no winds in dwarf irregular galaxies Gavilan, Marta; Ascasibar, Yago; Molla, Mercedes; Diaz, Angeles I. Abstract. We argue that isolated gas-rich dwarf galaxies - in particular, dwarf irregular (dIrr) galaxies - do not necessarily undergo significant gas loss. Our aim is to investigate whether the observed properties of isolated, gas-rich dwarf galaxies, not affected by external environmental processes, can be reproduced by self-consistent chemophotometric infall models with continuous star formation histories and no mass or metal loss. The model is characterized by the total mass of primordial gas available to the object, its characteristic collapse time-scale, and a constant star formation efficiency. A grid of 144 such models has been computed by varying these parameters, and their predictions (elemental abundances, stellar and gas masses, photometric colours) have been compared with a set of observations of dIrr galaxies obtained from the literature. It is found that the models with moderate to low efficiency are able to reproduce most of the observational data, including the relative abundances of nitrogen and oxygen. Key words: galaxies: abundances, galaxies: dwarf, galaxies: evolution, galaxies: formation
Retrieve 61 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home