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Cosmic Coughs: The Dust Production of Luminous Blue Variables

18 Sep 2021, 00:09 UTC
Cosmic Coughs: The Dust Production of Luminous Blue Variables
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Title: The contribution by luminous blue variable stars to the dust content of the Magellanic CloudsAuthors: C. Agliozzo, N. Phillips, A. Mehner, D. Baade, P. Scicluna, F. Kemper, D. Asmus, W.-J. de Wit, G. PignataFirst Author’s Institution: European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, GermanyStatus: Accepted for publication in Astronomy & Astrophysics
A Dust DeficitNot to be confused with the kind that collects under your bed, dust in the universe is crucial both to the evolution of galaxies and to the very light we receive from astrophysical sources. In fact, roughly half of the light that we eventually see from stars and gas is absorbed and re-emitted by dust at some point. More directly, from far-infrared observations of galaxies near and far, we know that there are significant reservoirs of cold gas and dust that power the star formation we see throughout cosmic time.Nonetheless, a critical question remains about the origin of dust. It can be formed from growth on preexisting grains in the interstellar medium, in supernova explosions, or during the latest stages of low mass stellar evolution. However, these sources likely cannot explain the dust masses observed in the universe. One source class that may help ...

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