Cloud-cloud collision and star formation in G013.313+0.193
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908439381278720 |
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| author | Berdikhan, Dilda Esimbek, Jarken Henkel, Christian Xu, Ye Zhou, Jianjun Liu, De-Jian Abdikamalov, Ernazar Ma, Yingxiu Komesh, Toktarkhan He, Yuxin Zhang, Wenjun Tang, Xindi Wu, Gang Li, Dalei Zhou, Dongdong Tursun, Kadirya Shen, Hailiang Imanaly, Ernar Jandaolet, Qaynar Manapbayeva, Arailym Tuiakbayeva, Duriya |
| author_facet | Berdikhan, Dilda Esimbek, Jarken Henkel, Christian Xu, Ye Zhou, Jianjun Liu, De-Jian Abdikamalov, Ernazar Ma, Yingxiu Komesh, Toktarkhan He, Yuxin Zhang, Wenjun Tang, Xindi Wu, Gang Li, Dalei Zhou, Dongdong Tursun, Kadirya Shen, Hailiang Imanaly, Ernar Jandaolet, Qaynar Manapbayeva, Arailym Tuiakbayeva, Duriya |
| contents | We study the G013.313+0.193 G013.313 region, a complex environment characterized by molecular cloud interactions indicative of cloud-cloud collision (CCC). Observations of the NH3(1,1) and (2,2) inversion transitions were obtained using the Nanshan 26 m radio telescope, while HCO+ (1-0), 12CO, 13CO, and C18O(1-0) transitions from the Purple Mountain Observatory Delingha 14 m telescope. Archival data are also included. We identified key observational signatures of CCC, including complementary spatial distributions, U-shaped structures, bridge features, and V-shaped velocity distributions. The position-velocity diagrams (P-V) reveal clear indications of gas interaction between two velocity components, suggesting an ongoing collision at an estimated angle of approximately 45 degree to the line of sight. The estimated collision timescale is 0.35-1.03 Myr, aligned with the inferred ages of young stellar objects (YSOs) in the region, supporting the hypothesis of collision-induced star formation. Hub-filament system (HFS) are identified in the compressed gas region, where filaments converge toward a dense hub, suggesting the CCC as a potential driver of HFS formation and massive star formation. The high column density suggests favorable conditions for the formation of massive stars. Although alternative kinematic drivers such as longitudinal collapse and shear motion are considered, CCC remains the most plausible explanation for the observed features. Our findings contribute to our understanding of the mechanisms of cloud dynamics and massive star formation in turbulent molecular environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_14943 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cloud-cloud collision and star formation in G013.313+0.193 Berdikhan, Dilda Esimbek, Jarken Henkel, Christian Xu, Ye Zhou, Jianjun Liu, De-Jian Abdikamalov, Ernazar Ma, Yingxiu Komesh, Toktarkhan He, Yuxin Zhang, Wenjun Tang, Xindi Wu, Gang Li, Dalei Zhou, Dongdong Tursun, Kadirya Shen, Hailiang Imanaly, Ernar Jandaolet, Qaynar Manapbayeva, Arailym Tuiakbayeva, Duriya Astrophysics of Galaxies Solar and Stellar Astrophysics 85 A.0 We study the G013.313+0.193 G013.313 region, a complex environment characterized by molecular cloud interactions indicative of cloud-cloud collision (CCC). Observations of the NH3(1,1) and (2,2) inversion transitions were obtained using the Nanshan 26 m radio telescope, while HCO+ (1-0), 12CO, 13CO, and C18O(1-0) transitions from the Purple Mountain Observatory Delingha 14 m telescope. Archival data are also included. We identified key observational signatures of CCC, including complementary spatial distributions, U-shaped structures, bridge features, and V-shaped velocity distributions. The position-velocity diagrams (P-V) reveal clear indications of gas interaction between two velocity components, suggesting an ongoing collision at an estimated angle of approximately 45 degree to the line of sight. The estimated collision timescale is 0.35-1.03 Myr, aligned with the inferred ages of young stellar objects (YSOs) in the region, supporting the hypothesis of collision-induced star formation. Hub-filament system (HFS) are identified in the compressed gas region, where filaments converge toward a dense hub, suggesting the CCC as a potential driver of HFS formation and massive star formation. The high column density suggests favorable conditions for the formation of massive stars. Although alternative kinematic drivers such as longitudinal collapse and shear motion are considered, CCC remains the most plausible explanation for the observed features. Our findings contribute to our understanding of the mechanisms of cloud dynamics and massive star formation in turbulent molecular environments. |
| title | Cloud-cloud collision and star formation in G013.313+0.193 |
| topic | Astrophysics of Galaxies Solar and Stellar Astrophysics 85 A.0 |
| url | https://arxiv.org/abs/2504.14943 |