Modelling gas and dust around carbon stars in the Large Magellanic Cloud. Issue Volume 14:Issue S343(2019) (August 2018)

• Record Type: Journal Article
• Authors: Srinivasan, Sundar; Chen, I.-K.; Scicluna, P.; Cami, J.; Kemper, F.
• Editors: Kerschbaum, Franz; Groenewegen, Martin; Olofsson, Hans
• Is Part Of: Proceedings of the International Astronomical Union. Volume 14:Issue S343(2019)
• Page Start: 504
• Page End: 505
• Publication Date: 2018-08
• Subjects: stars: AGB and post-AGB, -- stars: mass loss, -- (stars:) circumstellar matter, -- radiative transfer; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921318006944
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: In order to investigate the effect of dust production on the molecular absorption, we model the dust continuum and the 7.5 and 13.7 μ m acetylene absorption features in the Spitzer IRS spectra of 148 carbon stars in the Large Magellanic Cloud (LMC). Our preliminary investigation does not find a strong correlation between the dust-production rate and the column density of acetylene for the LMC sample. However, we will construct more models at high optical depths and probe a larger range of dust properties for more robust results.