Challenges of AGB modelling with dust. Issue Volume 11:Issue A29B(2015) (11th May 2017)

• Record Type: Journal Article
• Authors: Ventura, Paolo; Dell'Agli, Flavia; Di Criscienzo, Marcella; García–Hernández, D. A.; Stanghellini, Letizia; Schneider, Raffaella
• Is Part Of: Proceedings of the International Astronomical Union. Volume 11:Issue A29B(2015)
• Publication Date: 2017-05-11
• Subjects: stars: AGB and post–AGB, -- stars: evolution, -- planetary nebulae: general; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921317000333
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We report on the most recent progresses on the modelling of the asymptotic giant branch (AGB) phase. We show that dust formation in the wind of AGBs is sensitive to the mass of the precursor, low–mass AGB with mass below ~ 3 M ⊙ producing mainly carbonaceous dust, whereas their counterparts of higher mass produce silicates and alumina dust. We discuss the uncertainty of the results, due to the poor knowledge of physical mechanisms highly important for AGB evolution, primarily convection and mass loss. We show how the chemical composition of planetary nebulae can be used to draw information on the main features of AGB evolution.