Cloud-cloud collision and cluster formation in the W5-NW complex
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914674688131072 |
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| author | Issac, Namitha Saha, Anindya Choudhary, Saanika Chaudhary, Aakash Tej, Anandmayee Liu, Hong-Li Liu, Tie Gopinathan, Maheswar |
| author_facet | Issac, Namitha Saha, Anindya Choudhary, Saanika Chaudhary, Aakash Tej, Anandmayee Liu, Hong-Li Liu, Tie Gopinathan, Maheswar |
| contents | We present a detailed structural and gas kinematic study of the star-forming complex W5-NW. A cloud-cloud collision scenario unravels with evidences of collision induced star and cluster formation. Various signatures of cloud-cloud collision such as "complementary distribution" and "bridging-features" are explored. At the colliding region, the two clouds have complementary morphologies, where W5-NWb has a filamentary key-like shape which fits into the U-shaped cavity in W5-NWa that behaves like a keyhole. The interaction region between the two clouds is characterised by bridging features with intermediate velocities connecting the two clouds. A skewed V-shaped bridging feature is also detected at the site of collision. A robust picture of the molecular gas distribution highlighting the bridges is seen in the position-position-velocity diagram obtained using the SCOUSEPY algorithm. Star cluster formation with an over-density of Class I and Class II young stellar objects is also seen towards this cloud complex, likely triggered by the cloud collision event. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_07394 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cloud-cloud collision and cluster formation in the W5-NW complex Issac, Namitha Saha, Anindya Choudhary, Saanika Chaudhary, Aakash Tej, Anandmayee Liu, Hong-Li Liu, Tie Gopinathan, Maheswar Astrophysics of Galaxies Solar and Stellar Astrophysics We present a detailed structural and gas kinematic study of the star-forming complex W5-NW. A cloud-cloud collision scenario unravels with evidences of collision induced star and cluster formation. Various signatures of cloud-cloud collision such as "complementary distribution" and "bridging-features" are explored. At the colliding region, the two clouds have complementary morphologies, where W5-NWb has a filamentary key-like shape which fits into the U-shaped cavity in W5-NWa that behaves like a keyhole. The interaction region between the two clouds is characterised by bridging features with intermediate velocities connecting the two clouds. A skewed V-shaped bridging feature is also detected at the site of collision. A robust picture of the molecular gas distribution highlighting the bridges is seen in the position-position-velocity diagram obtained using the SCOUSEPY algorithm. Star cluster formation with an over-density of Class I and Class II young stellar objects is also seen towards this cloud complex, likely triggered by the cloud collision event. |
| title | Cloud-cloud collision and cluster formation in the W5-NW complex |
| topic | Astrophysics of Galaxies Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2402.07394 |