The Outer Edges of Dwarf Irregular Galaxies: Stars and Gas

P. W. Hodge; D. A. Hunter; M. S. Oey

doi:10.1086/346192

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arXiv · astro-ph/0212246

The Outer Edges of Dwarf Irregular Galaxies: Stars and Gas

P. W. Hodge·D. A. Hunter·M. S. Oey

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Abstract

We have in recent years come to view dwarf galaxy evolution in the broader context of the cosmic evolution of large-scale structure. Dwarf galaxies, as the putative building blocks of hierarchical galaxy formation, and also as the most numerous galaxies in the Universe, play a central role in cosmic evolution. In particular, the interplay of galactic and intergalactic material around dwarf irregulars must be more extensive than in more massive disk galaxies because of their lower gravitational potential and lower interstellar pressures. The outer regions of dwarf irregular galaxies therefore yield vital clues to the dominant processes in this interaction zone. The Workshop addressed a number of questions related to the role of the outer regions in the evolution of dwarf galaxies and broader consequences. On-line Workshop Proceedings are at http://www.lowell.edu/Workshops/Lowell02/

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P. W. Hodge, D. A. Hunter, M. S. Oey. 2002-12-10. The Outer Edges of Dwarf Irregular Galaxies: Stars and Gas. https://doi.org/10.1086/346192

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