Inefficient star formation in extremely metal poor galaxies

Yong Shi (), Lee Armus, George Helou, Sabrina Stierwalt, Yu Gao, Junzhi Wang, Zhi-Yu Zhang and Qiusheng Gu
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Yong Shi: School of Astronomy and Space Science, Nanjing University
Lee Armus: Infrared Processing and Analysis Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
George Helou: Infrared Processing and Analysis Center, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
Sabrina Stierwalt: University of Virginia, PO Box 400325, Charlottesville, Virginia 22904, USA
Yu Gao: Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing 210008, China
Junzhi Wang: Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
Zhi-Yu Zhang: Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
Qiusheng Gu: School of Astronomy and Space Science, Nanjing University

Nature, 2014, vol. 514, issue 7522, 335-338

Abstract: Spatially resolved infrared observations of two galaxies with oxygen abundances below 10 per cent of the solar value show that stars formed very inefficiently in seven star-forming clumps, suggesting that star formation may have been very inefficient in the early Universe.

Date: 2014
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DOI: 10.1038/nature13820

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