Inflow of atomic gas fuelling star formation

M. J. Michałowski, G. Gentile, Jeppe 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, Jesper Rasmussen, A. Rossi, S. Savaglio, P. Schady, A. De Ugarte Postigo, D. Watson, P. Van Der Werf, S. D. Vergani, D. Xu

Research output: Contribution to journalConference articleResearchpeer-review


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
JournalProceedings of the International Astronomical Union
Issue numberA29B
Pages (from-to)229-230
Number of pages2
Publication statusPublished - 2016
EventXXIXth IAU General Assembly - Hawaii Convention Center, Honolulu, United States
Duration: 3 Aug 201514 Aug 2015
Conference number: 29


ConferenceXXIXth IAU General Assembly
LocationHawaii Convention Center
CountryUnited States
Internet address


  • Galaxies: formation
  • Galaxies: ISM
  • Gamma rays: bursts
  • Radio lines: galaxies

Cite this

Michałowski, M. J., Gentile, G., Hjorth, J., Krumholz, M. R., Tanvir, N. R., Kamphuis, P., Burlon, D., Baes, M., Basa, S., Berta, S., Castro Cerón, J. M., Crosby, D., D'Elia, V., Elliott, J., Greiner, J., Hunt, L. K., Klose, S., Koprowski, M. P., Le Floc'h, E., ... Xu, D. (2016). Inflow of atomic gas fuelling star formation. Proceedings of the International Astronomical Union, 11(A29B), 229-230.