Direct Observational Evidence of the Multi-scale, Dynamical Mass Accretion Toward a High-mass Star-forming Hub-filament System

被引：16

作者：

Yang, Dongting ^{[1
]}

Liu, Hong-Li ^{[1
]}

Tej, Anandmayee ^{[2
]}

Liu, Tie ^{[3
,4
]}

Sanhueza, Patricio ^{[5
,6
]}

Qin, Sheng-Li ^{[1
]}

Lu, Xing ^{[3
]}

Wang, Ke ^{[7
,8
]}

Pan, Sirong ^{[1
]}

Xu, Feng-Wei ^{[7
,8
]}

Vazquez-Semadeni, Enrique ^{[9
]}

Li, Shanghuo ^{[10
]}

Gomez, Gilberto C. C. ^{[9
]}

Palau, Aina ^{[9
]}

Garay, Guido ^{[11
]}

Goldsmith, Paul F. F. ^{[12
]}

Juvela, Mika ^{[13
]}

Saha, Anindya ^{[2
]}

Bronfman, Leonardo ^{[11
]}

Lee, Chang Won ^{[14
,15
]}

Tatematsu, Kenichi ^{[5
,6
]}

Dewangan, Lokesh ^{[16
]}

Zhou, Jianwen ^{[10
]}

Zhang, Yong ^{[17
]}

Stutz, Amelia ^{[10
,18
]}

Eswaraiah, Chakali ^{[19
]}

Toth, L. Viktor ^{[20
]}

Ristorcelli, Isabelle ^{[21
]}

Shen, Xianjin ^{[1
]}

Luo, Anxu ^{[1
]}

Chibueze, James O. O. ^{[22
,23
,24
]}

机构：

[1] Yunnan Univ, Sch Phys & Astron, Kunming 650091, Peoples R China

[2] Indian Inst Space Sci & Technol, Thiruvananthapuram 695547, Kerala, India

[3] Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China

[4] Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China

[5] Natl Inst Nat Sci, Natl Astron Observ Japan, 2-21-1 Osawa,Mitaka Ku, Tokyo 1818588, Japan

[6] SOKENDAI, Astron Sci Program, Grad Inst Adv Studies, 2-21-1 Osawa, Mitaka Ku, Tokyo 1818588, Japan

[7] Peking Univ, Kavli Inst Astron & Astrophys, 5 Yiheyuan Rd, Beijing 100871, Peoples R China

[8] Peking Univ, Dept Astron, Beijing 100871, Peoples R China

[9] Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, Antigua Carretera Patzcuaro 8701, Morelia 58089, Michoacan, Mexico

[10] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[11] Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile

[12] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[13] Univ Helsinki, Dept Phys, POB 64, FI-00014 Helsinki, Finland

[14] Korea Astron & Space Sci Inst, 776 Daedeokdaero, Daejeon 34055, South Korea

[15] Univ Sci & Technol, Korea UST, 217 Gajeong Ro, Daejeon 34113, South Korea

[16] Phys Res Lab, Ahmadabad 380009, India

[17] Sun Yat Sen Univ, Sch Phys & Astron, 2 Daxue Rd, Zhuhai 519082, Guangdong, Peoples R China

[18] Univ Concepcion, Dept Astron, Av Esteban Iturra S-N,160-C, Concepcion, Chile

[19] Indian Inst Sci Educ & Res Tirupati, Karakambadi Rd, Tirupati 517507, India

[20] Eotvos Lorand Univ, Dept Astron, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary

[21] Univ Toulouse, IRAP, CNRS, UPS,CNES, Toulouse, France

[22] North West Univ, Ctr Space Res, ZA-2520 Potchefstroom, South Africa

[23] Univ South Africa, Dept Math Sci, Cnr Christian Wet Rd & Pioneer Ave,Florida Pk, ZA-1709 Roodepoort, South Africa

[24] Univ Nigeria, Fac Phys Sci, Dept Phys & Astron, Carver Bldg, 1 Univ Rd, Nsukka 410001, Nigeria

来源：

ASTROPHYSICAL JOURNAL | 2023年 / 953卷 / 01期

基金：

芬兰科学院; 美国国家航空航天局; 新加坡国家研究基金会; 美国国家科学基金会; 中国国家自然科学基金;

关键词：

ALMA 3-MILLIMETER OBSERVATIONS; TRIGONOMETRIC PARALLAXES; HOT CORES; REGIONS; CLUMPS; FRAGMENTATION; CLOUDS; I; COLLAPSE; PROTOSTARS;

D O I：

10.3847/1538-4357/acdf42

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

There is growing evidence that high-mass star formation and hub-filament systems (HFS) are intricately linked. The gas kinematics along the filaments and the forming high-mass star(s) in the central hub are in excellent agreement with the new generation of global hierarchical high-mass star formation models. In this paper, we present an observational investigation of a typical HFS cloud, G310.142+0.758 (G310 hereafter), which reveals unambiguous evidence of mass inflow from the cloud scale via the filaments onto the forming protostar(s) at the hub conforming with the model predictions. Continuum and molecular line data from the ATOMS and MALT90 surveys that cover different spatial scales are used. Three filaments (with a total mass of 5.7 & PLUSMN; 1.1 x 10(3) M (& ODOT;)) are identified converging toward the central hub region where several signposts of high-mass star formation have been observed. The hub region contains a massive clump (1280 & PLUSMN; 260 M (& ODOT;)) harboring a central massive core. Additionally, five outflow lobes are associated with the central massive core implying a forming cluster. The observed large-scale, smooth, and coherent velocity gradients from the cloud down to the core scale, and the signatures of infall motion seen in the central massive clump and core, clearly unveil a nearly continuous, multi-scale mass accretion/transfer process at a similar mass infall rate of & SIM;10(-3) M (& ODOT;) yr(-1) over all scales, feeding the central forming high-mass protostar(s) in the G310 HFS cloud.

引用

页数：9

共 18 条

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