An S-shaped filament formed due to Cloud-Cloud Collision in molecular cloud G178.28-00.61
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915408380952576 |
|---|---|
| author | Zhang, Tianwei Liu, Tie Wu, Yuefang Feng, Linjing Jiao, Sihan Ward-Thompson, Derek Traficante, Alessio Fraser, Helen J Di Francesco, James Johnstone, Doug Goldsmith, Paul F. Doi, Yasuo Liu, Xunchuan Lee, Chang Won Xu, Fengwei Yadav, Ram K. White, Glenn J Bronfman, Leonardo Kuan, Yi-Jehng Kim, Kee-Tae Quan, Donghui |
| author_facet | Zhang, Tianwei Liu, Tie Wu, Yuefang Feng, Linjing Jiao, Sihan Ward-Thompson, Derek Traficante, Alessio Fraser, Helen J Di Francesco, James Johnstone, Doug Goldsmith, Paul F. Doi, Yasuo Liu, Xunchuan Lee, Chang Won Xu, Fengwei Yadav, Ram K. White, Glenn J Bronfman, Leonardo Kuan, Yi-Jehng Kim, Kee-Tae Quan, Donghui |
| contents | We present compelling observational evidence supporting G178.28-00.61 as an early-stage candidate for Cloud-Cloud Collision (CCC), with indications of the formation of an S-shaped filament, evenly-separated dense cores, and young star clusters. The observations of CO molecular line emission demonstrate the existence of two interacting molecular clouds with systemic velocities of 0.8 km/s and -1.2 km/s, respectively. The convergence zone of these two clouds reveals an S-shaped filament in the JCMT 850 micron continuum image, suggesting cloud interaction. In line with expectations from CCC simulations, broad bridging features are discernible in the position-velocity diagrams. An elevated concentration of identified Class I and II young stellar objects along the filament at the intersection area further supports the hypothesis of a collision-induced origin. This observation could be explained by a recent MHD model of CCC (Kong et al. 2024), which predicts a similar morphology, scale, density, and unbound status, as well as the orientation of the polarization. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_18547 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | An S-shaped filament formed due to Cloud-Cloud Collision in molecular cloud G178.28-00.61 Zhang, Tianwei Liu, Tie Wu, Yuefang Feng, Linjing Jiao, Sihan Ward-Thompson, Derek Traficante, Alessio Fraser, Helen J Di Francesco, James Johnstone, Doug Goldsmith, Paul F. Doi, Yasuo Liu, Xunchuan Lee, Chang Won Xu, Fengwei Yadav, Ram K. White, Glenn J Bronfman, Leonardo Kuan, Yi-Jehng Kim, Kee-Tae Quan, Donghui Astrophysics of Galaxies Solar and Stellar Astrophysics We present compelling observational evidence supporting G178.28-00.61 as an early-stage candidate for Cloud-Cloud Collision (CCC), with indications of the formation of an S-shaped filament, evenly-separated dense cores, and young star clusters. The observations of CO molecular line emission demonstrate the existence of two interacting molecular clouds with systemic velocities of 0.8 km/s and -1.2 km/s, respectively. The convergence zone of these two clouds reveals an S-shaped filament in the JCMT 850 micron continuum image, suggesting cloud interaction. In line with expectations from CCC simulations, broad bridging features are discernible in the position-velocity diagrams. An elevated concentration of identified Class I and II young stellar objects along the filament at the intersection area further supports the hypothesis of a collision-induced origin. This observation could be explained by a recent MHD model of CCC (Kong et al. 2024), which predicts a similar morphology, scale, density, and unbound status, as well as the orientation of the polarization. |
| title | An S-shaped filament formed due to Cloud-Cloud Collision in molecular cloud G178.28-00.61 |
| topic | Astrophysics of Galaxies Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2507.18547 |