Spectroscopic sizing of interstellar icy grains with JWST

LEO's

Nature Astronomy, Published online: 09 January 2024; doi:10.1038/s41550-023-02155-x

Cold ice-covered dust grains grow during their journey from the interstellar medium to protoplanetary disks. JWST observations show that this growth begins before the protostellar phase and provide quantitative insights into the grain growth process.

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