| Name: Shubham Yadav |
| Affiliation: Aryabhatta Research Institute of Observational Sciences Nainital India 263001 |
| Conference ID: ASI2026_617 |
| Title: Tracing Accretion-Driven Variability in T-Tauri stars Using Spectroscopic and Photometric Observations. |
| Abstract Type: Poster |
| Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Author(s) and Co-Author(s) with Affiliation: Shubham Yadav(Aryabhatta Research Institute of Observational Sciences, Nainital -263001, India), Dr. Neelam Panwar(Aryabhatta Research Institute of Observational Sciences, Nainital- 263001, India), Dr. Ram Kesh Yadav(National Astronomical Research Institute of Thailand -50180, Thailand), Dr. Lalita Sharma(Indian Institute Of Technology Roorkee, Roorkee -247667, India) |
| Abstract: Young Stellar Objects (YSOs) are highly dynamic systems exhibiting both spectral and photometric variability, driven by non-steady mass accretion and dynamic outflow processes. Multi-epoch spectroscopic observations provide key diagnostics of the physical conditions in these systems, tracing accretion through emission lines such as Brγ, Paβ, He I, and Hα, and probing outflow activity via forbidden lines. Complementing this, multi-band photometric monitoring enables the characterization of brightness variations and short-term flux changes, revealing the temporal behavior of accretion and inner disk processes. In this study, we present a systematic investigation of three YSOs—GM, BP Tau, and V505—combining spectroscopic and photometric data over multiple epochs. The lightcurves constructed in B, V, R, and I bands reveal correlated brightness variations consistent with accretion-driven variability inferred from spectral line changes. Our combined analysis allows us to constrain the temporal evolution of both accretion and outflow processes, providing a comprehensive picture of the dynamic behavior of YSOs. |
