Inflow of atomic gas fuelling star formation

M. J. Michałowski*, G. Gentile, J. Hjorth, M. R. Krumholz, N. R. Tanvir, P. Kamphuis, D. Burlon, M. Baes, S. Basa, S. Berta, J. M. Castro Cerón, D. Crosby, V. D'Elia, J. Elliott, J. Greiner, L. K. Hunt, S. Klose, M. P. Koprowski, E. Le Floc'h, D. MalesaniT. Murphy, A. Nicuesa Guelbenzu, E. Palazzi, J. Rasmussen, A. Rossi, S. Savaglio, P. Schady, A. De Ugarte Postigo, D. Watson, P. Van Der Werf, S. D. Vergani, D. Xu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Gamma-ray burst host galaxies are deficient in molecular gas, and show anomalous metal-poor regions close to GRB positions. Using recent Australia Telescope Compact Array (ATCA) Hi observations we show that they have substantial atomic gas reservoirs. This suggests that star formation in these galaxies may be fuelled by recent inflow of metal-poor atomic gas. While this process is debated, it can happen in low-metallicity gas near the onset of star formation because gas cooling (necessary for star formation) is faster than the Hi-to-H2 conversion.

Original languageEnglish
Pages (from-to)229-230
Number of pages2
JournalProceedings of the International Astronomical Union
Volume11
Issue numberA29B
DOIs
Publication statusPublished - 2015
Externally publishedYes

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