Widespread S[CLC]i[/CLC]O Emission in NGC 1333

摘要: We have mapped the IRAS 4-SVS 13 region in NGC 1333 star-forming complex SiO v=0 lines at 3, 2, and 1.3 mm using IRAM 30 m telescope. In addition to high-velocity components associated with protostellar activity 4 other sources, we report detection of an extended layer gas ambient velocities, traced by extremely narrow fairly bright component (Δv=0.4-1.2 km s-1, TB=2 K). The abundance that is typically 1-3×10−10. This 2 orders magnitude lower than flows but about higher quiescent clouds. Several mechanisms could account for such emission are briefly discussed: high-temperature chemical reactions surrounding wind SVS interaction between neighboring outflows local small condensations vicinity 4.