Inflow of atomic gas fuelling star formation. Issue Volume 11:Issue A29B(2015) (27th October 2016)

• Record Type: Journal Article
• Authors: Michałowski, M. J.; Gentile, G.; Hjorth, J.; Krumholz, M. R.; Tanvir, N. R.; Kamphuis, P.; Burlon, D.; Baes, M.; Basa, S.; Berta, S.; Cerón, J. M. Castro; Crosby, D.; D'Elia, V.; Elliott, J.; Greiner, J.; Hunt, L. K.; Klose, S.; Koprowski, M. P.; Le Floc'h, E.; Malesani, D.; Murphy, T.; Guelbenzu, A. Nicuesa; Palazzi, E.; Rasmussen, J.; Rossi, A.; Savaglio, S.; Schady, P.; de Ugarte Postigo, A.; Watson, D.; van der Werf, P.; Vergani, S. D.; Xu, D.;
• Editors: Benvenuti, Piero
• Is Part Of: Proceedings of the International Astronomical Union. Volume 11:Issue A29B(2015)
• Page Start: 229
• Page End: 230
• Publication Date: 2016-10-27
• Subjects: galaxies: ISM, -- galaxies: formation, -- gamma rays: bursts, -- radio lines: galaxies; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921316005056
• Languages: English
• ISSNs: 1743-9213

Abstract

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 theHi -to-H2 conversion.