| Name: PRYANSHU BASUR |
| Affiliation: Indian Institute of Technology Mandi |
| Conference ID: ASI2026_320 |
| Title: Probing the Interstellar Medium of NGC 7380: Toward a Determination of the Gas-to-Dust Ratio |
| Abstract Type: Poster |
| Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Author(s) and Co-Author(s) with Affiliation: Pryanshu Basur(Indian Institute of Technology Mandi, Mandi - 175001, India), Neelam Panwar(Aryabhatta Research Institute of Observational Sciences, Nainital - 263001, India), Krishna Mohan Parattu(Indian Institute of Technology Mandi, Mandi - 175001, India) |
| Abstract: NGC 7380 is a young open cluster that is a great laboratory to study the effect of stellar feedback on the natal ISM. Massive stars in these clusters affect their environment in deep ways, and one of the fundamental parameters to understand such a process is the gas-to-dust ratio (GDR). The GDR is thought to be tracking a typical value in the ISM, but it differs vastly in star-forming clouds because of local physical processes such as stellar winds, radiation pressure, and cloud dispersal. In this study, we are conducting a multi-wavelength analysis to derive the GDR across NGC 7380. Molecular gas content is traced through CO observations obtained from the Purple Mountain Observatory, which serve as a proxy for molecular hydrogen. The dust component and its distribution are mapped using a near-infrared colour excess method applied to a stellar catalogue constructed from 2MASS and UKIRT data. This work will deliver the first spatially resolved map of the gas-to-dust ratio in NGC 7380. By quantifying the mean GDR and exploring its variations across the cluster, we aim to provide new constraints on molecular cloud dispersal and the physical state of the ISM in this active star-forming region. Based on the WD01 model, we report a GDR of 85 derived from 12CO and 122 from 13CO, resulting in an average GDR of 104 for the region. |
