3 papers
astro-ph.SR2025
NGC 2392 and NGC 4361: Spectroscopic Diagnostics of Planetary Nebula Evolution
Atul Kumar Singh, Saurabh Sharma, Rahul Kumar Anand +3
The study presents a detailed spectroscopic analysis of the planetary nebulae (PNe) NGC~2392 and NGC~4361 using optical spectra obtained from the 2-m Himalayan Chandra Telescope (H…
astro-ph.GA2025
JWST/MIRI Observations of PAH Emission and Evolution in H II Regions of NGC 5457
Atul Kumar Singh, Rahul Kumar Anand, Shantanu Rastogi
Aims: To investigate the physical processing of PAHs in high-mass star-forming environments. This study aims to characterize how the PAH ionization fraction varies across different…
astro-ph.GA2025
Probing Dust and PAH Chemistry in Evolved Carbon-Rich Nebulae through Optical and Infrared Observations
Rahul Kumar Anand, Atul Kumar Singh, Saurabh Sharma +2
This study presents optical and near-infrared photometric observations, alongside mid-infrared spectroscopic data from the ISO SWS instrument, to examine potential correlations bet…