Kinetic temperature of massive star-forming molecular clumps measured with formaldehyde IV. The ALMA view of N113 and N159W in the LMC
文献类型：期刊论文
| 作者 | Tang, X. D.18,19,20 ; Henkel, C.17,18,20; Menten, K. M.18; Gong, Y.18; Chen, C-H R.18; Li, D. L.19,20; Lee, M-Y16,18; Mangum, J. G.15; Ao, Y. P.14; Muehle, S.13
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2021-10-28 |
| 卷号 | 655页码:14 |
| 关键词 | stars: formation ISM: clouds ISM: molecules radio lines: ISM |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202141804 |
| 通讯作者 | Tang, X. D.(tangxindi@xao.ac.cn) |
| 英文摘要 | We mapped the kinetic temperature structure of two massive star-forming regions, N113 and N159W, in the Large Magellanic Cloud (LMC). We have used similar to 1.'' 6 (similar to 0.4 pc) resolution measurements of the para-H2CO J(Ka)K(c) JKaKc = 3(03)-2(02), 3(22)-2(21), and 3(21)-2(20) transitions near 218.5 GHz to constrain RADEX non local thermodynamic equilibrium models of the physical conditions. The gas kinetic temperatures derived from the para-H2CO line ratios 3(22)-2(21)/3(03)-2(02) and 3(21)-2(20)/3(03)-2(02) range from 28 to 105 K in N113 and 29 to 68 K in N159W. Distributions of the dense gas traced by para-H2CO agree with those of the 1.3 mm dust and Spitzer 8.0 mu m emission, but they do not significantly correlate with the H alpha emission. The high kinetic temperatures (T-kin greater than or similar to 50 K) of the dense gas traced by para-H2CO appear to be correlated with the embedded infrared sources inside the clouds and/or young stellar objects in the N113 and N159W regions. The lower temperatures (T-kin < 50 K) were measured at the outskirts of the H2CO-bearing distributions of both N113 and N159W. It seems that the kinetic temperatures of the dense gas traced by para-H2CO are weakly affected by the external sources of the H alpha emission. The non thermal velocity dispersions of para-H2CO are well correlated with the gas kinetic temperatures in the N113 region, implying that the higher kinetic temperature traced by para-H2CO is related to turbulence on a similar to 0.4 pc scale. The dense gas heating appears to be dominated by internal star formation activity, radiation, and/or turbulence. It seems that the mechanism heating the dense gas of the star-forming regions in the LMC is consistent with that in Galactic massive star-forming regions located in the Galactic plane. |
| WOS关键词 | LARGE-MAGELLANIC-CLOUD ; COMPLEX ORGANIC-MOLECULES ; GALACTIC-CENTER ; DENSE GAS ; MECHANICAL FEEDBACK ; SURVEY AMMONIA ; LINE EMISSION ; IRAS SOURCES ; ORION-KL ; REGIONS |
| 资助项目 | Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Natural Science Foundation of China[11903070] ; National Natural Science Foundation of China[12173075] ; National Natural Science Foundation of China[11433008] ; National Natural Science Foundation of China[11973076] ; TianShan Youth Plan[2018Q084] ; CAS Light of West China Program[2018-XBQNXZ-B-024] ; CAS Light of West China Program[2020-XBQNXZ-017] ; Collaborative Research Council[956] ; Deutsche Forschungsgemeinschaft (DFG) ; Chinese Academy of Sciences President's International Fellowship Initiative[2021VMA0009] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000712071700006 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; National Natural Science Foundation of China ; TianShan Youth Plan ; CAS Light of West China Program ; Collaborative Research Council ; Deutsche Forschungsgemeinschaft (DFG) ; Chinese Academy of Sciences President's International Fellowship Initiative |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4327]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Tang, X. D. |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Peoples R China 3.Nagoya Univ, Dept Phys, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan 4.Natl Radio Astron Observ, POB 0,1003 Lopezville Rd, Socorro, NM 87801 USA 5.Univ Groningen, Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands 6.Ioffe Phys Tech Inst, Polytekhn Skaya Str 26, St Petersburg 194021, Russia 7.UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England 8.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands 9.Joint ALMA Observ, Alonso de Cordova 3107, Santiago 7630355, Chile 10.European Southern Observ, Alonso de Cordova 3107, Santiago 7630355, Chile |
| 推荐引用方式 GB/T 7714 | Tang, X. D.,Henkel, C.,Menten, K. M.,et al. Kinetic temperature of massive star-forming molecular clumps measured with formaldehyde IV. The ALMA view of N113 and N159W in the LMC[J]. ASTRONOMY & ASTROPHYSICS,2021,655:14. |
| APA | Tang, X. D..,Henkel, C..,Menten, K. M..,Gong, Y..,Chen, C-H R..,...&Li, J. S..(2021).Kinetic temperature of massive star-forming molecular clumps measured with formaldehyde IV. The ALMA view of N113 and N159W in the LMC.ASTRONOMY & ASTROPHYSICS,655,14. |
| MLA | Tang, X. D.,et al."Kinetic temperature of massive star-forming molecular clumps measured with formaldehyde IV. The ALMA view of N113 and N159W in the LMC".ASTRONOMY & ASTROPHYSICS 655(2021):14. |
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