Dust from AGBs: understanding the Spitzer observations of evolved stars in the Large Magellanic Cloud

Bibcode
2016MmSAI..87..255D
Dell'Agli, F.; García-Hernández, D. A.; Ventura, P.; Schneider, R.; Di Criscienzo, M.; Rossi, C.
Bibliographical reference

Memorie della Societa Astronomica Italiana, v.87, p.255 (2016)

Advertised on:
2016
Number of authors
6
IAC number of authors
1
Citations
1
Refereed citations
1
Description
Asymptotic Giant Branch (AGB) stars represent one of the main stellar sources for production of dust in the Universe. We provide a description of the formation and growth of dust particles in the circumstellar envelope of AGBs, starting from detailed calculations of the AGB evolutionary phase. We use stellar population synthesis to interpret the Spitzer observations of dusty AGBs in the Large Magellanic Cloud (LMC). Our results show that carbon-rich and oxygen-rich stars evolve into different and separated regions of the observational diagrams obtained with the Spitzer bands. This allows a straight comparison with the spectroscopically confirmed samples of AGBs in the LMC present in the literature. The overall impact of AGBs on the dust production rate in the LMC is also discussed.
Type
Non-refereed

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