Dust formation and wind acceleration around the aluminum oxide-rich AGB star W Hydrae.
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ABSTRACT:
SUBMITTER: Takigawa A
PROVIDER: S-EPMC5665597 | biostudies-literature | 2017 Nov
REPOSITORIES: biostudies-literature
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Dust formation and wind acceleration around the aluminum oxide-rich AGB star W Hydrae.
Takigawa Aki A Kamizuka Takafumi T Tachibana Shogo S Yamamura Issei I
Science advances 20171101 11
Dust grains, formed around asymptotic giant branch (AGB) stars, are accelerated by stellar radiation to drive stellar winds, which supply freshly synthesized nuclides to the Galaxy. Silicate is the dominant dust species in space, but ~40% of oxygen-rich AGB stars are thought to have comparable amounts of aluminum oxide dust. Dust formation and the wind-driving mechanism around these oxygen-rich stars, however, are poorly understood. We report on the spatial distributions of AlO and <sup>29</sup> ...[more]
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