Matches in SemOpenAlex for { <https://semopenalex.org/work/W3101053658> ?p ?o ?g. }
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- W3101053658 abstract "The non-uniform distribution of gas and protostars in molecular clouds is caused by combinations of various physical processes that are difficult to separate. We explore this non-uniform distribution in the M17 molecular cloud complex that hosts massive star formation activity using the 12CO (J = 1–0) and 13CO (J = 1–0) emission lines obtained with the Nobeyama 45 m telescope. Differences in clump properties such as mass, size, and gravitational boundedness reflect the different evolutionary stages of the M17-H ii and M17-IRDC clouds. Clumps in the M17-H ii cloud are denser, more compact, and more gravitationally bound than those in M17-IRDC. While M17-H ii hosts a large fraction of very dense gas (27%) that has a column density larger than the threshold of ∼1 g cm−2 theoretically predicted for massive star formation, this very dense gas is deficient in M17-IRDC (0.46%). Our HCO+ (J = 1–0) and HCN (J = 1–0) observations with the Taeduk Radio Astronomy Observatory 14 m telescope trace all gas with a column density higher than 3 × 1022 cm−2, confirming the deficiency of high-density (≳105 cm−3) gas in M17-IRDC. Although M17-IRDC is massive enough to potentially form massive stars, its deficiency of very dense gas and gravitationally bound clumps can explain the current lack of massive star formation." @default.
- W3101053658 created "2020-11-23" @default.
- W3101053658 creator A5009131681 @default.
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- W3101053658 creator A5026615083 @default.
- W3101053658 creator A5047659216 @default.
- W3101053658 creator A5049106160 @default.
- W3101053658 creator A5072123000 @default.
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- W3101053658 creator A5084142417 @default.
- W3101053658 creator A5086329161 @default.
- W3101053658 creator A5088868849 @default.
- W3101053658 creator A5090101640 @default.
- W3101053658 date "2020-03-04" @default.
- W3101053658 modified "2023-10-18" @default.
- W3101053658 title "Large-scale Molecular Gas Distribution in the M17 Cloud Complex: Dense Gas Conditions of Massive Star Formation?" @default.
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