Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009iaus..256..405s&link_type=abstract
The Magellanic System: Stars, Gas, and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 256,
Astronomy and Astrophysics
Astronomy
Stars: Agb And Post-Agb, Stars: Atmospheres, Stars: Carbon, Stars: Mass Loss, Stars: Supergiants, Magellanic Couds, Infrared: Stars
Scientific paper
The sensitivity of the Infrared Spectrograph on the Spitzer Space Telescope has enabled detailed surveys of mass-losing stars in the Large and Small Magellanic Clouds. Comparisons of samples from these galaxies and the Milky Way reveal how the dust produced by evolved stars depends on the metallicity of the host environment. Oxygen-rich stars show several trends with metallicity. In more metal-poor environments, fewer of them show dust excesses, the circumstellar SiO absorption grows weaker, the quantity of silicate dust decreases, and alumina dust grows rare. As carbon stars grow more metal-poor, the amount of circumstellar acetylene gas increases, while the amount of trace dust elements like SiC and MgS decreases. However, there is little dependence on metallicity in the amount of amorphous carbon dust produced by carbon stars, because they produce the carbon needed to make dust themselves. As galaxies grow more metal-poor, the composition of the dust they produce should grow more carbon rich.
No associations
LandOfFree
The production of dust in the Magellanic Clouds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The production of dust in the Magellanic Clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The production of dust in the Magellanic Clouds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-978317