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On the Interpretation of Mid-infrared Absorption Lines of Gas-phase H2O as Observed by JWST/MIRI

open access: yesThe Astrophysical Journal Supplement Series
Rovibrational absorption lines of H _2 O in the 5–8 μ m wavelength range selectively probe gas against the mid-infrared continuum-emitting background of the inner regions of young stellar objects and active galactic nuclei and deliver important ...
Jialu Li   +2 more
doaj   +1 more source

First Extragalactic Detection of Thermal Hydroxyl (OH) 18 cm Emission in M31 Reveals Abundant CO-faint Molecular Gas

open access: yesThe Astrophysical Journal
The most abundant interstellar molecule, molecular hydrogen (H _2 ), is practically invisible in cold molecular clouds. Astronomers typically use carbon monoxide (CO) to trace the bulk distribution and mass of H _2 in our galaxy and many others.
Michael P. Busch
doaj   +1 more source

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