Carbon monoxide in clouds at low metallicity in the dwarf irregular galaxy WLM

Bruce G. Elmegreen (), Monica Rubio, Deidre A. Hunter, Celia Verdugo, Elias Brinks and Andreas Schruba
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Bruce G. Elmegreen: T.J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, New York 10598, USA
Monica Rubio: Universidad de Chile, Casilla 36-D, Santiago, Chile
Deidre A. Hunter: Lowell Observatory, 1400 West Mars Hill Road
Celia Verdugo: Universidad de Chile, Casilla 36-D, Santiago, Chile
Elias Brinks: Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB, UK
Andreas Schruba: Cahill Center for Astronomy and Astrophysics, California Institute of Technology

Nature, 2013, vol. 495, issue 7442, 487-489

Abstract: New and archival observations of the low-metallicity dwarf irregular galaxy WLM show that it contains carbon monoxide, the main tracer for interstellar clouds capable of forming stars, and suggest that in small galaxies both star-forming cores and carbon monoxide become increasingly rare as the metallicity decreases.

Date: 2013
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DOI: 10.1038/nature11933

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