Date of Award
Master of Science (MS)
Dr. Naslim Neelamkodan
Using high spatial resolution observation of 12CO (2−1) and 13CO (2−1) emissions, I present the molecular cloud properties of N42 in the Small Magellanic Cloud. The observations were taken using the Atacama Large Millimeter Array observations. I conducted a thorough analysis of molecular gas properties to understand how the cloud properties of N42 differ from those of Galactic clouds. My analysis shows that, in N42, the majority of CO emission appears clumpy, while molecular cores with YSOs exhibit greater linewidths and masses. Massive clump cores are associated with YSOs. Virial analysis of the 12CO and 13CO emissions determines the clump masses. The clumps are concluded to be in self-gravitational virial equilibrium, according to the study of velocity dispersion versus radius (σ-v) relationship. The (σ-v) relation of the 12CO clumps is fitted with a power-law index of 0.4±0.1. This relation in N42 has a power-law behaviour that is consistent with many Galactic clouds such as cloud N55 in the Large Magellanic Cloud irrespective of the metallicity effect.
Ali Ahli, Mohammed Essa Abdulla, "MOLECULAR CLOUD PROPERTIES IN HIGH-MASS STAR FORMING REGIONS" (2022). Theses. 889.