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Unveiling Extensive Clouds of Dark Gas in the Solar Neighborhood

Abstract : From the comparison of interstellar gas tracers in the solar neighborhood (HI and CO lines from the atomic and molecular gas, dust thermal emission, and ? rays from cosmic-ray interactions with gas), we unveil vast clouds of cold dust and dark gas, invisible in HI and CO but detected in ? rays. They surround all the nearby CO clouds and bridge the dense cores to broader atomic clouds, thus providing a key link in the evolution of interstellar clouds. The relation between the masses in the molecular, dark, and atomic phases in the local clouds implies a dark gas mass in the Milky Way comparable to the molecular one.
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http://hal.in2p3.fr/in2p3-00183363
Contributor : Simone Lantz <>
Submitted on : Monday, October 29, 2007 - 6:09:01 PM
Last modification on : Wednesday, September 23, 2020 - 4:36:52 AM

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I.A. Grenier, J.M. Casandjian, R. Terrier. Unveiling Extensive Clouds of Dark Gas in the Solar Neighborhood. Science, American Association for the Advancement of Science, 2005, 307, pp.1292-1295. ⟨10.1126/SCIENCE.1106924⟩. ⟨in2p3-00183363⟩

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