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Chemical Differenti...
Chemical Differentiation around Five Massive Protostars Revealed by ALMA: Carbon-chain Species and Oxygen/Nitrogen-bearing Complex Organic Molecules
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- Taniguchi, Kotomi (författare)
- National Institutes of Natural Sciences (NINS)
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- Majumdar, Liton (författare)
- National Institute of Science Education and Research,Homi Bhabha National Institute (HBNI)
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- Caselli, Paola (författare)
- Max-Planck-Institut für extraterrestrische Physik,Max Planck Institute for Extraterrestrial Physics
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- Takakuwa, Shigehisa (författare)
- Kagoshima University,Academia Sinica Taiwan
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- Hsieh, Tien-Hao (författare)
- Max-Planck-Institut für extraterrestrische Physik,Max Planck Institute for Extraterrestrial Physics
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- Saito, Masao (författare)
- The Graduate University for Advanced Studies (SOKENDAI),National Institutes of Natural Sciences (NINS)
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- Li, Zhi-Yun (författare)
- University of Virginia
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- Dobashi, Kazuhito (författare)
- Tokyo Gakugei University
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- Shimoikura, Tomomi (författare)
- Otsuma Women's University
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- Nakamura, Fumitaka (författare)
- University of Tokyo, Japan,The Graduate University for Advanced Studies (SOKENDAI),National Institutes of Natural Sciences (NINS)
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- Tan, Jonathan, 1973 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,University of Virginia
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- Herbst, Eric (författare)
- University of Virginia
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Astrophysical Journal, Supplement Series. - 1538-4365 .- 0067-0049. ; 267:1
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.3...
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Abstract
Ämnesord
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- We present Atacama Large Millimeter/submillimeter Array Band 3 data toward five massive young stellar objects (MYSOs), and investigate relationships between unsaturated carbon-chain species and saturated complex organic molecules (COMs). An HC5N (J = 35-34) line has been detected from three MYSOs, where nitrogen (N)-bearing COMs (CH2CHCN and CH3CH2CN) have been detected. The HC5N spatial distributions show compact features and match with a methanol (CH3OH) line with an upper-state energy around 300 K, which should trace hot cores. The hot regions are more extended around the MYSOs where N-bearing COMs and HC5N have been detected compared to two MYSOs without these molecular lines, while there are no clear differences in the bolometric luminosity and temperature. We run chemical simulations of hot-core models with a warm-up stage, and compare with the observational results. The observed abundances of HC5N and COMs show good agreements with the model at the hot-core stage with temperatures above 160 K. These results indicate that carbon-chain chemistry around the MYSOs cannot be reproduced by warm carbon-chain chemistry, and a new type of carbon-chain chemistry occurs in hot regions around MYSOs.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
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Taniguchi, Kotom ...
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Majumdar, Liton
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Caselli, Paola
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Takakuwa, Shigeh ...
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Hsieh, Tien-Hao
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Saito, Masao
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visa fler...
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Li, Zhi-Yun
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Dobashi, Kazuhit ...
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Shimoikura, Tomo ...
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Nakamura, Fumita ...
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Tan, Jonathan, 1 ...
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Herbst, Eric
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