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arXiv · 2611.07092

Feedback-Driven Star Formation and YSO Distribution around H II Regions Sh2-140 and Sh2-145

C Rishi·Neelam Panwar·Ajay Kumar Singh
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Abstract

OB2 associations are ideal sites for studying various star-formation processes. Here, we study the region containing the bright-rimmed cloud (BRC) 44 and the dark cloud LDN 1204, which lies between two H II regions, Sh2-140 and Sh2-145. The region is a part of a larger Cepheus OB2 association. Our previous study on BRC 44 suggests a scenario of triggered star formation through radiative feedback. Using the infrared data from the Spitzer Space Telescope and the Wide-field Infrared Survey Explorer, we find a spatial correlation between the locations of massive stars and the distribution of young stellar objects, indicating a possible sequential pattern of star formation across the region. These results indicate the role of massive-star feedback in shaping the star-formation history of the complex

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C Rishi, Neelam Panwar, Ajay Kumar Singh. 2026-11-04. Feedback-Driven Star Formation and YSO Distribution around H II Regions Sh2-140 and Sh2-145. https://arxiv.org/abs/2611.07092

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