Gas and Dust in the Circumstellar Envelopes of Stars on (and Beyond) the AGB
Paper in proceeding, 2023

Circumstellar envelopes, formed by intense winds as stars evolve along the asymptotic giant branch, have proven to be rich in different molecular species. This is an effect of different chemical processes: stellar photosphere equilibrium chemistry, non-equilibrium chemistry in the extended stellar atmosphere, and photo-induced chemistry in the outflow. Commensurate with the evolution of the gas is the formation of different microscopic solid-state particles, dust grains. The molecular setup and the grain properties depend on the characteristics and evolutionary state of the central star.

Mass loss

Circumstellar chemistry

AGB stars

Author

Hans Olofsson

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics

Astrophysics and Space Science Proceedings

15706591 (ISSN) 15706605 (eISSN)

Vol. 59 81-88
9783031290022 (ISBN)

European Conference on Laboratory Astrophysics, ECLA 2020
Anacapri, Italy,

Subject Categories

Astronomy, Astrophysics and Cosmology

Theoretical Chemistry

DOI

10.1007/978-3-031-29003-9_9

More information

Latest update

10/12/2023