Dust and hydrogen molecules in the extremely metal-poor dwarf galaxy SBS 0335-052

Details Dust and hydrogen molecules in the extremely metal-poor dwarf galaxy SBS 0335-052 Dust and hydrogen molecules in the extremely metal-poor dwarf galaxy SBS 0335-052

2002-01-08

arxiv.org/abs/astro-ph/0201112v1

Mon.Not.Roy.Astron.Soc. 330 (2002) L19

Astronomy and Astrophysics

Astrophysics

5 pages LaTeX, to appear in MNRAS Letter

Scientific paper

10.1046/j.1365-8711.2002.05283.x

During the early stages of galaxy evolution, the metallicity is generally low and nearby metal-poor star-forming galaxies may provide templates for primordial star formation. In particular, the dust content of such objects is of great importance since early molecular formation can take place on grains. To gain insight into primeval galaxies at high redshift, we examine the dust content of the nearby extremely low-metallicity galaxy SBS 0335-052 which hosts a very young starburst (< 10 Myr). In young galaxies, the dust formation rate in Type II supernovae governs the amount of dust, and by incorporating recent results on dust production in Type II supernovae we model the evolution of dust content. If the star-forming region is compact (< 100 pc), as suggested by observations of SBS 0335-052, our models consistently explain the quantity of dust, far-infrared luminosity, and dust temperature in this low-metallicity object. We also discuss the H_2 abundance. The compactness of the region is important to H_2 formation, because the optical depth of dust for UV photons becomes large and H_2 dissociation is suppressed. We finally focus on implications for damped Ly alpha systems.

Affiliated with

Also associated with

No associations

Rating

Dust and hydrogen molecules in the extremely metal-poor dwarf galaxy SBS 0335-052 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 Dust and hydrogen molecules in the extremely metal-poor dwarf galaxy SBS 0335-052, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust and hydrogen molecules in the extremely metal-poor dwarf galaxy SBS 0335-052 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-321436