Dust Formation in a Galaxy with Primitive Abundances

Details Dust Formation in a Galaxy with Primitive Abundances Dust Formation in a Galaxy with Primitive Abundances

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sci...323..353s&link_type=abstract

Science, Volume 323, Issue 5912, pp. 353- (2009).

Physics

35

Scientific paper

Interstellar dust plays a crucial role in the evolution of galaxies. It governs the chemistry and physics of the interstellar medium. In the local universe, dust forms primarily in the ejecta from stars, but its composition and origin in galaxies at very early times remain controversial. We report observational evidence of dust forming around a carbon star in a nearby galaxy with a low abundance of heavy elements, 25 times lower than the solar abundance. The production of dust by a carbon star in a galaxy with such primitive abundances raises the possibility that carbon stars contributed carbonaceous dust in the early universe.

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