Bibcode
Villaver, Eva; Manchado, A.; García-Segura, Guillermo
Bibliographical reference
The Astrophysical Journal, Volume 748, Issue 2, article id. 94 (2012).
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4
2012
Journal
Citations
48
Refereed citations
38
Description
We study the hydrodynamical behavior of the gas expelled by moving
asymptotic giant branch stars interacting with the interstellar medium
(ISM). Our models follow the wind modulations prescribed by stellar
evolution calculations, and we cover a range of expected relative
velocities (10-100 km s-1), ISM densities (between 0.01
and 1 cm-3), and stellar progenitor masses (1 and 3.5 M
&sun;). We show how and when bow shocks and cometary-like
structures form, and in which regime the shells are subject to
instabilities. Finally, we analyze the results of the simulations in
terms of the different kinematical stellar populations expected in the
Galaxy.
Related projects
Nucleosynthesis and molecular processes in the late stages of Stellar Evolution
Low- to intermediate-mass (M < 8 solar masses, Ms) stars represent the majority of stars in the Cosmos. They finish their lives on the Asymptotic Giant Branch (AGB) - just before they form planetary nebulae (PNe) - where they experience complex nucleosynthetic and molecular processes. AGB stars are important contributors to the enrichment of the
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