Abstract Details
| Name: Veena V S Affiliation: IIST Conference ID: ASI2018_1703 Title : Understanding the structure, evolution and kinematics of the IRDC G333.73+0.37 Authors and Co-Authors : Sarita Vig (IIST, Trivandrum) Bhaswati Mookerjea (TIFR, Mumbai) Alvaro Sanchez-Monge (University of Cologne, Germany) Anandmayee Tej (IIST, Trivandrum) C. H. Ishwara-Chandra (NCRA, Pune) Abstract Type : Contributed Talk Abstract Category : Stars,ISM and the Galaxy Abstract : G333.73+0.37 is a filamentary infrared dark cloud (IRDC) located at a distance of 2.6 kpc. This region contains two mid-infrared bright sources connected by thick lanes of gas and dust. Cold dust emission from this region is investigated using data at far-infrared and millimeter wavelengths. The 4700 solar mass cloud is fragmented further into 10 clumps with temperatures ranging between 14 to 22 K and masses ranging from 87 to 1530 solar mass. The molecular line emission towards central clump show signatures of infall activity. We have also detected a large scale velocity gradient along the filament, likely due to accretion flows rather than rotation. Using low frequency radio observations , we identified 2 HII regions with compact and shell-like morphologies powered by late O or early B type stars. Photometric analysis of near and mid-infrared point sources reveal the YSO population within the cloud. Fragmentation analysis show the supercritical nature of this IRDC. Based on various estimates obtained for objects in different evolutionary stages, we find a lower limit to the age of the cloud. |