Dust Formation in a Galaxy with Primitive Abundances-Reference-Cited by-同舟云学术

Dust Formation in a Galaxy with Primitive Abundances

Published:2009-01-16 Issue:5912 Volume:323 Page:353-355
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Sloan G. C.¹²³⁴⁵,Matsuura M.¹²³⁴⁵,Zijlstra A. A.¹²³⁴⁵,Lagadec E.¹²³⁴⁵,Groenewegen M. A. T.¹²³⁴⁵,Wood P. R.¹²³⁴⁵,Szyszka C.¹²³⁴⁵,Bernard-Salas J.¹²³⁴⁵,van Loon J. Th.¹²³⁴⁵

Affiliation:

1. Department of Astronomy, Cornell University, Ithaca, NY 14853-6801, USA.

2. National Optical Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo 181-8588, Japan.

3. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK.

4. School of Physics and Astronomy, University of Manchester, Post Office Box 88, Manchester M6O 1QD, UK.

5. Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, Belgium.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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