Chemically Fresh Gas Inflows Detected in a Nearby High-mass Star-forming Region

被引：6

作者：

Chen, Xi ^{[1
,2
]}

Ren, Zhi-Yuan ^{[3
]}

Li, Da-Lei ^{[4
]}

Liu, Tie ^{[2
]}

Wang, Ke ^{[5
]}

Shen, Zhi-Qiang ^{[2
]}

Ellingsen, Simon P. ^{[6
]}

Sobolev, Andrej M. ^{[7
]}

Mei, Ying ^{[1
]}

Li, Jing-Jing ^{[8
]}

Wu, Yue-Fang ^{[5
]}

Kim, Kee-Tae ^{[9
,10
]}

机构：

[1] Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China

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

[3] Chinese Acad Sci, Natl Astron Observ, Datun Rd A20, Beijing, Peoples R China

[4] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China

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

[6] Univ Tasmania, Sch Nat Sci, Private Bag 37, Hobart, Tas 7001, Australia

[7] Ural Fed Univ, 19 Mira St, Ekaterinburg 620002, Russia

[8] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China

[9] Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea

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

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2021年 / 923卷 / 01期

基金：

中国国家自然科学基金;

关键词：

MOLECULAR CLOUDS; DARK CLOUDS; DENSE CORES; ACCRETION; PROTOSTARS; TURBULENT; FILAMENTS; DISC;

D O I：

10.3847/2041-8213/ac3ec8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of a chemically fresh inflow that is feeding high-mass young-stellar-object (HMYSO) growth in the nearby high-mass star-forming region G352.63 made with both the Atacama Large Millimeter/submillimeter Array (ALMA) and the Submillimeter Array (SMA). High-quality images of the dust and molecular lines from both ALMA and SMA have consistently revealed a gravitationally controlled cold (similar to 10 K) gas inflow of chemically fresh molecules (e.g., CCH and HC3N) toward the central HMYSO and its surrounding dense gas structure, which has a possible torus- or disk-like morphology. The HMYSO is also observed to have an outflow, which is nearly perpendicular to the torus and its parental filament, and thus can be clearly separated from the inflows. These kinematic features provide observational evidence to support the conjecture that the infalling streamers in high-mass star-forming regions could proceed in a similar process to that observed in low-mass counterparts. The chemically fresh infalling streamers could also be involved in the disk or torus configuration, fragmentation, and accretion bursts that occur in both simulations and observations.

引用

页数：11

共 52 条

[21] A KEPLERIAN-LIKE DISK AROUND THE FORMING O-TYPE STAR AFGL 4176 [J].

Johnston, Katharine G. ;

Robitaille, Thomas P. ;

Beuther, Henrik ;

Linz, Hendrik ;

Boley, Paul ;

Kuiper, Rolf ;

Keto, Eric ;

Hoare, Melvin G. ;

van Boekel, Roy .

ASTROPHYSICAL JOURNAL LETTERS, 2015, 813 (01)

[22] The bridge: a transient phenomenon of forming stellar multiples Sequential formation of stellar companions in filaments around young protostars [J].

Kuffmeier, M. ;

Calcutt, H. ;

Kristensen, L. E. .

ASTRONOMY & ASTROPHYSICS, 2019, 628

[23] The Origins of Protostellar Core Angular Momenta [J].

Kuznetsova, Aleksandra ;

Hartmann, Lee ;

Heitsch, Fabian .

ASTROPHYSICAL JOURNAL, 2019, 876 (01)

[24] The JCMT Transient Survey: Four-year Summary of Monitoring the Submillimeter Variability of Protostars [J].

Lee, Yong-Hee ;

Johnstone, Doug ;

Lee, Jeong-Eun ;

Herczeg, Gregory ;

Mairs, Steve ;

Contreras-Pena, Carlos ;

Hatchell, Jennifer ;

Naylor, Tim ;

Bell, Graham S. ;

Bourke, Tyler L. ;

Broughton, Colton ;

Francis, Logan ;

Gupta, Aashish ;

Harsono, Daniel ;

Liu, Sheng-Yuan ;

Park, Geumsook ;

Plovie, Spencer ;

Moriarty-Schieven, Gerald H. ;

Scholz, Aleks ;

Sharma, Tanvi ;

Stella Teixeira, Paula ;

Wang, Yao-Te ;

Aikawa, Yuri ;

Bower, Geoffrey C. ;

Vivien Chen, Huei-Ru ;

Bae, Jaehan ;

Baek, Giseon ;

Chapman, Scott ;

Ping Chen, Wen ;

Du, Fujun ;

Dutta, Somnath ;

Forbrich, Jan ;

Guo, Zhen ;

Inutsuka, Shu-ichiro ;

Kang, Miju ;

Kirk, Helen ;

Kuan, Yi-Jehng ;

Kwon, Woojin ;

Lai, Shih-Ping ;

Lalchand, Bhavana ;

Lane, James M. M. ;

Lee, Chin-Fei ;

Liu, Tie ;

Morata, Oscar ;

Pearson, Samuel ;

Pon, Andy ;

Sahu, Dipen ;

Shang, Hsien ;

Stamatellos, Dimitris ;

Tang, Shih-Yun .

ASTROPHYSICAL JOURNAL, 2021, 920 (02)

[25] ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions - I. Survey description and a first look at G9.62+0.19 [J].

Liu, Tie ;

Evans, Neal J. ;

Kim, Kee-Tae ;

Goldsmith, Paul F. ;

Liu, Sheng-Yuan ;

Zhang, Qizhou ;

Tatematsu, Ken'ichi ;

Wang, Ke ;

Juvela, Mika ;

Bronfman, Leonardo ;

Cunningham, Maria R. ;

Garay, Guido ;

Hirota, Tomoya ;

Lee, Jeong-Eun ;

Kang, Sung-Ju ;

Li, Di ;

Li, Pak-Shing ;

Mardones, Diego ;

Qin, Sheng-Li ;

Ristorcelli, Isabelle ;

Tej, Anandmayee ;

Toth, L. Viktor ;

Wu, Jing-Wen ;

Wu, Yue-Fang ;

Yi, Hee-weon ;

Yun, Hyeong-Sik ;

Liu, Hong-Li ;

Peng, Ya-Ping ;

Li, Juan ;

Li, Shang-Huo ;

Lee, Chang Won ;

Shen, Zhi-Qiang ;

Baug, Tapas ;

Wang, Jun-Zhi ;

Zhang, Yong ;

Issac, Namitha ;

Zhu, Feng-Yao ;

Luo, Qiu-Yi ;

Soam, Archana ;

Liu, Xun-Chuan ;

Xu, Feng-Wei ;

Wang, Yu ;

Zhang, Chao ;

Ren, Zhiyuan ;

Zhang, Chao .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 496 (03) :2790-2820

[26] Substructures in the Keplerian disc around the O-type (proto-)star G17.64+0.16 [J].

Maud, L. T. ;

Cesaroni, R. ;

Kumar, M. S. N. ;

Rivilla, V. M. ;

Ginsburg, A. ;

Klaassen, P. D. ;

Harsono, D. ;

Sanchez-Monge, A. ;

Ahmadi, A. ;

Allen, V ;

Beltran, M. T. ;

Beuther, H. ;

Galvan-Madrid, R. ;

Goddi, C. ;

Hoare, M. G. ;

Hogerheijde, M. R. ;

Johnston, K. G. ;

Kuiper, R. ;

Moscadelli, L. ;

Peters, T. ;

Testi, L. ;

van der Tak, F. F. S. ;

de Wit, W. J. .

ASTRONOMY & ASTROPHYSICS, 2019, 627

[27] Chasing discs around O-type (proto)stars [J].

Maud, L. T. ;

Cesaroni, R. ;

Kumar, M. S. N. ;

van der Tak, F. F. S. ;

Allen, V. ;

Hoare, M. G. ;

Klaassen, P. D. ;

Harsono, D. ;

Hogerheijde, M. R. ;

Sanchez-Monge, A. ;

Schilke, P. ;

Ahmadi, A. ;

Beltran, M. T. ;

Beuther, H. ;

Csengeri, T. ;

Etoka, S. ;

Fuller, G. ;

Galvan-Madrid, R. ;

Goddi, C. ;

Henning, Th. ;

Johnston, K. G. ;

Kuiper, R. ;

Lumsden, S. ;

Moscadelli, L. ;

Mottram, J. C. ;

Peters, T. ;

Rivilla, V. M. ;

Testi, L. ;

Vig, S. ;

de Wit, W. J. ;

Zinnecker, H. .

ASTRONOMY & ASTROPHYSICS, 2018, 620

[28] The formation of massive stars from turbulent cores [J].

McKee, CF ;

Tan, JC .

ASTROPHYSICAL JOURNAL, 2003, 585 (02) :850-871

[29] Massive star formation in 100,000 years from turbulent and pressurized molecular clouds [J].

McKee, CF ;

Tan, JC .

NATURE, 2002, 416 (6876) :59-61

[30] Burst occurrence in young massive stellar objects [J].

Meyer, D. M. -A. ;

Vorobyov, E. I. ;

Elbakyan, V. G. ;

Stecklum, B. ;

Eisloeffel, J. ;

Sobolev, A. M. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 482 (04) :5459-5476

← 1 2 3 4 5 6 →