A Natural Laboratory for Astrochemistry, a Variable Protostar B335
Emission lines from complex organic molecules in B335 were observed in four epochs, spanning a luminosity burst of about 10 years duration.
The emission lines increased dramatically in intensity as the luminosity increased, but they have decreased only slightly as the luminosity has decreased. This behavior agrees with expectations of rapid sublimation as the dust temperature increases, but slower freeze-out after the dust temperature drops.
Further monitoring of this source, along with detailed chemical models, will exploit this natural laboratory for astrochemistry.
Spectra of B335 observed in four epochs. Black, blue, red, and green solid lines depict the observed spectra in each epoch. Vertical lines indicate the individual COMs modeled by XCLASS. The inset at the top panel shows the overall line profiles of CS J= 7 − 6 (Eu=65.8 K). The redand orange-shaded spectra are 13CH3OH (Eu=43.7 K) and CH2DOH (Eu=234 K) lines, respectively, with very different upper state energies. — astro-ph.SR
Jeong-Eun Lee, Neal J. Evans II, Giseon Baek, Chul-Hwan Kim, Jinyoung Noh, Yao-Lun Yang
Comments: Accepted for publication in ApJL
Subjects: Solar and Stellar Astrophysics (astro-ph.SR); Astrophysics of Galaxies (astro-ph.GA)
Cite as: arXiv:2410.05904 [astro-ph.SR] (or arXiv:2410.05904v1 [astro-ph.SR] for this version)
https://doi.org/10.48550/arXiv.2410.05904
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Submission history
From: Jeong-Eun Lee
[v1] Tue, 8 Oct 2024 11:01:58 UTC (509 KB)
https://arxiv.org/abs/2410.05904
Astrobiology, Astrochemistry,
