摘要: We studied the unique kinematic properties in massive filament G352.63-1.07 at 1000-AU spatial scale with the dense molecular tracers observed with the Atacama Large Millimeter/submillimeter Array (ALMA). We find the central massive core M1 (12 Msun) being separated from the surrounding filament with a velocity difference of v-v_sys=-2 km/s and a transverse separation within 3 arcsec. Meanwhile, as shown in multiple dense-gas tracers, M1 has a spatial extension closely aligned with the main filament and is connected to the filament towards its both ends. M1 thus represents a very beginning state for a massive young star-forming core escaping from the parental filament, within a time scale of ~4000 years. Based on its kinetic energy (3.5x10^44 erg), the core escape is unlikely solely due to the original filament motion or magnetic field, but requires more energetic events such as a rapid intense anisotropic collapse. The released energy also seems to noticeably increase the environmental turbulence. This may help the filament to become stabilized again.
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来自:
任致远
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期刊:
Astrophysical Journal
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分类:
天文学
>>
天体物理学
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投稿状态:
已在期刊出版
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引用:
ChinaXiv:202401.00031
(或此版本
ChinaXiv:202401.00031V1)
DOI:10.12074/202401.00031V1
CSTR:32003.36.ChinaXiv.202401.00031.V1
- 推荐引用方式:
Zhiyuan Ren,Xi Chen,Tie Liu,Emma Mannfors,Leonardo Bronfman, Fengwei Xu,Siyi Feng,Hongli Liu,Fanyi Meng,Amelia M. Stutz, ,Shanghuo Li,Chang Won Lee, ,Ke Wang,Jianwen Zhou,Di Li,Chen Wang,Chakali Eswaraiah ,Anandmayee Tej ,Long-Fei Chen ,Hui Shi.(2023).A High-Mass Young Star-forming Core Escaping from Its Parental Filament.中国科学院科技论文预发布平台.[ChinaXiv:202401.00031]
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