Abstract Details
| Name: Veena VS Affiliation: IIST, Trivandrum Conference ID: ASI2019_154 Title : IRDCs to Star Clusters: In Depth Study of Structure, Evolution and Kinematics of Few Southern Massive Star Forming Regions Authors and Co-Authors : Veena V. S Abstract Type : Oral Abstract Category : Thesis Abstract : The formation and the evolution of massive stars are found to dominate the fate of their parental clouds and the host galaxies. This is primarily due to the enhanced feedback mechanisms from these stars that alter the environments on local, global and cosmic scales. While theoretical formulations have been proposed to explain their formation, observational studies of the early phases remain limited. Most of these observational works are designed to examine the large scale properties of a sample of massive star forming regions. While there are studies that focuses on individual regions, majority of them probe the northern Galactic sky. In this context, we have carried out a multiwavelength study towards three massive star forming regions in the southern Galactic sky. Our intention was to examine the properties and initial conditions related to the formation of massive stars and how these properties change with evolution. Radio observations serve as a powerful tool to discern regions associated with newly formed massive stars as well as identifying the nature of the ionising sources. Far-infared and millimeter continuum data traces the emission from the cold and dense regions of molecular clouds that often appear as dark extinction features in the optical images. Near and mid-infrared data on the other hand, are useful in examining the warm dust emission and young stellar objects in these regions. Spectral line data such as radio recombination lines and molecular lines are excellent to probe the complex kinematics of the ionised gas and molecular cloud. Using the multiwavelength approach, objects in different evolutionary stages are identified, from quiescent cores in infrared dark clouds, to evolved star clusters. The results reveal that an interplay of various feedback mechanisms and cloud density structure govern the observed morphologies, kinematics and star formation activity in these regions. |