2024
DOI: 10.3847/1538-4357/ad6b92
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IPA: Class 0 Protostars Viewed in CO Emission Using JWST

Adam E. Rubinstein,
Neal J. Evans,
Himanshu Tyagi
et al.

Abstract: We investigate the bright CO fundamental emission in the central regions of five protostars in their primary mass assembly phase using new observations from JWST’s Near-Infrared Spectrograph and Mid-Infrared Instrument. CO line emission images and fluxes are extracted for a forest of ∼150 rovibrational transitions from two vibrational bands, v = 1−0 and v = 2−1. However, 13CO is undetected, indicating that 12CO emission is optically thin. We use H2 emission lines to correct fluxes for extinction and then const… Show more

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