Abstract Details
| Name: Amrit Mishra Affiliation: Indian Institute of Space Science and Technology Conference ID: ASI2025_359 Title : Investigating the fragmentation and kinematics in the massive, filamentary cloud IRAS 18337-0743 Authors and Co-Authors : Amrit Shankar Mishra 1, Namitha Issac 2, Anandmayee Tej 1, Xing Lu 2 Abstract Type : Poster Abstract Category : Stars, Interstellar Medium, and Astrochemistry in Milky Way Abstract : High-mass star-forming clouds exhibit filamentary structures extending to ≳ 1 pc and containing ≳ 10^3 solar masses of the dense gas that fragments along the major axis. These massive filaments are often characterized by strong turbulence and outflows, indicating a dynamical environment. Embedded within these filaments are dense cores of mass ≲ 10 solar masses. For these dense cores to form massive protostars, they must accrete gas from the ambient medium. Such accretion processes are characterized by velocity gradient along the (sub-)filaments and signatures of infall. We present an in-depth fragmentation analysis and kinematic study of the massive filamentary cloud IRAS 18337-0743, located at a distance of 3.8kpc. For this analysis, high-sensitivity and high-resolution ALMA Band 3 (3mm) and Band 6 (1.3mm) dust continuum and molecular line transitions (NH2D and H13CO+) are used. The large number of detected cores are classified into pre-stellar and protostellar cores, and the influence of protostellar feedback is also investigated. |