![[6]-[9] vs. SiC strength for carbon stars in the Milky Way](/data/SOFIA/docs/sites/default/files/Public/SCI2020_0006.png "[6]-[9] vs. SiC strength for carbon stars in the Milky Way")
The Chemical Enrichment of the Universe
Date
[6]-[9] vs. SiC strength for carbon stars in the Milky Way. The [6]-[9] color is constructed from small, feature-free wavelength ranges of the spectra at 6 and 9 µm and traces the amorphous carbon content, with redder colors (higher x-axis values) indicating more amorphous carbon. Gray asterisks are Galactic carbon stars that are neither Miras nor SRb variables.
Credit
Kraemer et al., 2019.
Image Number
SCI2020_0006
