The First JWST View of a 30-Myr-old Protoplanetary Disk Reveals a Late-stage Carbon-rich Phase

We present a JWST MIRI/MRS spectrum of the inner disk of WISE J044634.16–262756.1B (hereafter J0446B), an old (∼34 Myr) M4.5 star but with hints of ongoing accretion. The spectrum is molecule-rich and dominated by hydrocarbons. We detect 14 molecular species (H _2 , CH _3 , CH _4 , C _2 H _2 , ^13 C...

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Bibliographic Details
Published in:	The Astrophysical Journal Letters
Main Authors:	Feng Long, Ilaria Pascucci, Adrien Houge, Andrea Banzatti, Klaus M. Pontoppidan, Joan Najita, Sebastiaan Krijt, Chengyan Xie, Joe Williams, Gregory J. Herczeg, Sean M. Andrews, Edwin Bergin, Geoffrey A. Blake, María José Colmenares, Daniel Harsono, Carlos E. Romero-Mirza, Rixin Li, Cicero X. Lu, Paola Pinilla, David J. Wilner, Miguel Vioque, Ke Zhang, the JDISCS collaboration
Format:	Article
Language:	English
Published:	IOP Publishing 2025-01-01
Subjects:	Protoplanetary disks Astrochemistry Infrared astronomy Circumstellar disks
Online Access:	https://doi.org/10.3847/2041-8213/ad99d2

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