On the Metallicity of Star-forming Dwarf Galaxies

Details On the Metallicity of Star-forming Dwarf Galaxies On the Metallicity of Star-forming Dwarf Galaxies

2001-06-23

arxiv.org/abs/astro-ph/0106431v1

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures, 2 table, Accepted for publication in ApJ

Scientific paper

10.1086/322960

We construct three extreme different scenarios of the star formation histories applicable to a sample of dwarf galaxies, based either on their present metallicity or their luminosity. The three possible scenarios imply different mechanical energy input rates and these we compare with the theoretical lower limits established for the ejection of processed matter out of dwarf galaxies. The comparison strongly points at the existence of extended gaseous haloes in these galaxies, acting as the barrier that allows galaxies to retain their metals and enhance their abundance. At the same time our findings strongly point at a continuous star-forming process, rather than to coeval bursts, as the main contributors to the overall metallicity in our galaxy sample.

Affiliated with

Also associated with

No associations

Rating

On the Metallicity of Star-forming Dwarf Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the Metallicity of Star-forming Dwarf Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Metallicity of Star-forming Dwarf Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-596502