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arXiv · 2610.10364

Photometric and Spectroscopic Study of Young Stellar Objects in IC 1848E Region

Shubham Yadav·Neelam Panwar·Lalita Sharma·C. Rishi
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Abstract

We present a comprehensive analysis combining multi-epoch mid-infrared (MIR) photometric and optical spectroscopic observations of young stellar candidates associated with elongated, elephant trunk-like structures (ETLSs) in the IC 1848E star-forming region. A sample of 15 candidate YSOs, initially identified by Chauhan et al. (2011), was investigated using multi-epoch NEOWISE $W1$ and $W2$ photometry to characterize their variability properties. After imposing stringent positional and photometric quality constraints, a final set of eight robust YSOs was retained and classified into three variability categories: non-variable, secular, and stochastic. One source, Star #9, exhibits a pronounced curved variability in the MIR light-curve and color-magnitude domains, indicative of systematic evolution of its circumstellar disk and/or accretion processes. Optical spectroscopic data for this object show strong H$α$ emission and prominent forbidden lines, providing clear evidence of active mass accretion and outflow phenomena. The combined photometric and spectroscopic diagnostics establish a close link between infrared variability, circumstellar disk evolution, and accretion-driven activity in YSOs associated with ETLSs in IC 1848E.

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Shubham Yadav, Neelam Panwar, Lalita Sharma, C. Rishi. 2026-10-07. Photometric and Spectroscopic Study of Young Stellar Objects in IC 1848E Region. https://arxiv.org/abs/2610.10364

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