CS emission near MIR-bubbles

TL;DR

This study investigates the presence of CS emission in young stellar objects near MIR bubbles, revealing potential triggered star formation and environmental interactions through spectral analysis and mapping.

Contribution

It provides new observational evidence of CS emission and infall signatures in young stellar objects near MIR bubbles, highlighting potential triggered star formation.

Findings

18 out of 44 sources detected in CS emission

Evidence of infall in three sources

Significant environmental interactions observed in maps

Abstract

We survey 44 young stellar objects located near the edges of mid-IR-identified bubbles in CS (1-0) using the Green Bank Telescope. We detect emission in 18 sources, indicating young protostars that are good candidates for being triggered by the expansion of the bubble. We calculate CS column densities and abundances. Three sources show evidence of infall through non-Gaussian line-shapes. Two of these sources are associated with dark clouds and are promising candidates for further exploration of potential triggered star formation. We obtained on-the-fly maps in CS (1-0) of three sources, showing evidence of significant interactions between the sources and the surrounding environment.