Mapping the large scale CO-depletion in the IRDC G351.77-0.51

Journal
Date Issued
2019
Author(s)
•
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Bovino, S.
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•
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Pillai, T.
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Menten, K. M.
Abstract
Knowledge of the degree of CO-depletion provides information on the physical conditions occurring in the innermost and the densest regions of molecular clouds. A key parameter is the radius within which the CO is depleted (R_dep). We present a study of the depletion of CO in the Infrared Dark Cloud G351.77-0.51 (G351), to derive the depletion across the cloud. We use the Herschel (Hi-Gal) and LABOCA dust continuum data, combined with APEX C18O and C17O(2-1) line observations. We built a simple model to investigate the size of the CO-depleted region in G351. The model suggests that R_dep < 0.15 pc, where we estimate a hydrogen number density > 2× 10^4 cm^-3. These results provide crucial information on the spatial scales on which different chemical processes can operate in high-mass star forming regions.
Coverage
New quests in stellar astrophysics IV astrochemistry, astrobiology and the origin of life
All editors
Chávez Dagostino, M.; Bertone, E.; Vega, O.; Chávez Dagostino, R.M.
Volume
90
Start page
497
Conferenece
New quests in stellar astrophysics IV. Astrochemistry, astrobiology and the origin of life
Conferenece place
Puerto Vallarta, Mexico
Conferenece date
31 marzo -5 aprile, 2019
Uri
Url
Issn Identifier
0037-8720
Ads BibCode
2019MmSAI..90..497S
Rights
open.access
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