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The dust production rate of carbon-rich stars in the Magellanic Clouds

Published online by Cambridge University Press:  30 December 2019

Ambra Nanni ,
Martin A. T. Groenewegen ,
Bernhard Aringer Open the ORCID record for Bernhard Aringer [Opens in a new window] ,
Paola Marigo ,
Stefano Rubele  and
Alessandro Bressan
Ambra Nanni
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: ambra.nanni@unipd.it
Martin A. T. Groenewegen
Affiliation:
Koninklijke Sterrenwacht van België, Ringlaan 3, B-1180 Brussel, Belgium
Bernhard Aringer
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: ambra.nanni@unipd.it
Paola Marigo
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: ambra.nanni@unipd.it
Stefano Rubele
Affiliation:
Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: ambra.nanni@unipd.it
Alessandro Bressan
Affiliation:
SISSA, via Bonomea 265, I-34136 Trieste, Italy
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Abstract

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We present our new investigation aimed to estimate the mass-loss and dust production rates of carbon-rich stars (C-stars) in the Magellanic Clouds (MCs). We compute dust growth and radiative transfer in circumstellar envelopes of C-stars for a grid of stellar parameters and for selected optical constants that simultaneously reproduce the main colour–colour diagrams in the infrared. We employ these grids of spectra to fit the spectral energy distribution of C-stars in the MCs. We find that our estimates can be significantly different from the other ones in the literature.

Keywords

stars: AGB and post-AGBstars: carboncircumstellar matterstars: mass lossstars: windsoutflowsMagellanic Clouds

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