Stars with variable luminosity found to influence supply of dust that made life. A long-period survey using AKARI and WISE infrared space telescopes found that the variable intensity of asymptotic giant branch (AGB) stars coincides with variations in the amount of interstellar dust they produce.
Artist’s impression of an asymptotic giant branch star. Credit: ©2023 Miyata, Tachibana, et al. CC-BYA long-period survey using AKARI and WISE infrared space telescopes found that the variable intensity of asymptotic giant branch stars coincides with variations in the amount of interstellar dust they produce.
Artist’s impression of how asymptotic giant branch stars exert pressure on solid matter. Credit: ©2023 Miyata, Tachibana, et al. CC-BY This interstellar dust is not the same stuff that accumulates on your floor when you forget to vacuum for a few days; it’s a name given to heavy elements that disperse from stars and lead to the formation of solid objects including planets. Although it’s long been known that AGBs, and especially so-called dusty AGBs, are the main producers of dust, it’s not known what the main drivers of dust production are and where we should be looking to find this out.
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