Year: 2024
Type: article
Abstract: Infrared observations with JWST open up a new window into the chemical composition of the gas in the inner disk ( 2 O lines whereas other disks show prominent CO 2 . The spectra of disks around very low-mass stars (<0.3 M ⊙ , late-M type stars like Trappist-1) are dominated by C 2 H 2 and other hydrocarbon features including those of benzene, suggesting volatile C/O>1. Together these data point to a rich chemistry in the inner regions that is linked to the physical structure of these disks (e.g., dust traps) and that may be affected by processes such as radial drift of icy pebbles from the outer to the inner disk.
Authors: Ewine F. van Dishoeck, the MINDS team
Institutions: Leiden University, Leiden Observatory
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,450
OpenAlex ID: W7119488701
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