Skip to main content

Table 1. Dust production in the LMC by various types of evolved stars, along with the adopted mineralogy in each source category. The bottom row summarises the total dust production rate and the mineralogy of the stellar dust production for the LMC. Dust production rates are taken from Matsuura et al. (2009) and Srinivasan et al. (2009). The typical compositions are discussed in Section 4 of the main text.

From: Stellar dust production and composition in the Magellanic Clouds

Object type

Mineralogy

(mass)

Dust production rate

(M yr−1)

O-rich AGB

95% am. sil.;

5% cryst. sil.

0.14 − > 0.4 × 10−5

C-rich AGB

88% am. carbon.;

12% SiC; var. % MgS

0.24 × 10−5

extreme AGB

88% am. carbon;

12% SiC; var. % MgS

2.36 − 4.3 × 10

RSG

95% am. sil.;

5% cryst. sil.

0.2 × 10

Total

77% am. carbon; 11% SiC

12% am. sil.; <1% cryst. sil.; var. MgS

(4 ± 1) × 10−5