AGB stars in the LMC: evolution of dust in circumstellar envelopes

Abstract

We calculated theoretical evolutionary sequences of asymptotic giant branch (AGB) stars, including formation and evolution of dust grains in their circumstellar envelope. By considering stellar populations of the Large Magellanic Cloud (LMC), we calculate synthetic colour-colour and colour-magnitude diagrams, which are compared with those obtained by the Spitzer Space Telescope. The comparison between observations and theoretical predictions outlines that extremely obscured carbon-stars and oxygen-rich sources experiencing hot bottom burning (HBB) occupy well defined, distinct regions in the colour-colour ($[3.6]-[4.5]$, $[5.8]-[8.0]$) diagram. The C-rich stars are distributed along a diagonal strip that we interpret as an evolutionary sequence, becoming progressively more obscured as the stellar surface layers enrich in carbon. Their circumstellar envelopes host solid carbon dust grains with size in the range $0.05<a<0.2\mu m$. The presence of SiC particles is expected only in the more metal-rich stars. The reddest sources, with $[3.6]-[4.5]>2$, are the descendants of stars with initial mass $M_{in}\sim 2.5-3M_{\odot }$ in the very latest phases of the AGB life. The oxygen-rich stars with the reddest colours ($[5.8]-[8.0]>0.6$) are those experiencing HBB, the descendants of $\sim 5M_{\odot }$ objects formed $10^8$ yr ago; alumina and silicates dust start forming at different distances from the central star. The overall dust production rate in the LMC is $\sim 4.5\times 10^{-5}{M}_{\odot }/yr$, the relative percentages due to C- and M- star being respectively 85 and 15 .

10 pages, 17 figures, accepted for publication in MNRAS

References in corpus (20)

• Dust Formation and Survival in Supernova Ejecta
• 350 Micron Dust Emission from High Redshift Quasars
• Evolution of interstellar dust and stardust in the solar neighbourhood
• Spitzer SAGE survey of the Large Magellanic Cloud II: Evolved Stars and Infrared Color Magnitude Diagrams
• Dust Destruction in the High-Velocity Shocks Driven by Supernovae in the Early Universe
• Thermal Emission from Warm Dust in the Most Distant Quasars
• The cycle of interstellar dust in galaxies of different morphological types
• AGB stars in the Magellanic Clouds. II. The rate of star formation across the LMC
• The Chemical Enrichment History of the Large Magellanic Cloud
• A Spitzer mid-infrared spectral survey of mass-losing carbon stars in the Large Magellanic Cloud
• Super and massive AGB stars - III. Nucleosynthesis in metal-poor and very metal-poor stars - Z=0.001 and 0.0001
• The Magellanic zoo: Mid-infrared Spitzer spectroscopy of evolved stars and circumstellar dust in the Magellanic Clouds
• The dust production rate of AGB stars in the Magellanic Clouds
• Decoding the stellar fossils of the dusty Milky Way progenitors
• The Mass-Loss Return From Evolved Stars to the LMC: Empirical Relations for Excess Emission at 8 and 24 μm
• Dust-driven Winds and Mass Loss of C-rich AGB Stars with subsolar Metallicities
• The Mass-Loss Return from Evolved Stars to the Large Magellanic Cloud IV: Construction and Validation of a Grid of Models for Oxygen-Rich AGB Stars, Red Supergiants, and Extreme AGB Stars
• Discovery of Extreme Carbon Stars in the Large Magellanic Cloud
• On the alumina dust production in the winds of O-rich Asymptotic Giant Branch stars
• Dissecting the Spitzer color-magnitude diagrams of extreme LMC AGB stars

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