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

Journal
Date Issued
2016
Author(s)
•
García-Hernández, D. A.
•
•
•
•
Rossi, C.
Abstract
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.
Volume
87
Start page
255
Uri
Url
Issn Identifier
0037-8720
Ads BibCode
2016MmSAI..87..255D
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

255.pdf

Description
Pdf editoriale
Size

5.66 MB

Format

Adobe PDF

Checksum (MD5)

e56f3bed9e5c2e3e05a4ade1bea79d01