Shock-induced star formation in G357.7 - 0.1?

Astronomy and Astrophysics – Astronomy

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Radio Sources (Astronomy), Shock Waves, Star Formation, Early Stars, Infrared Astronomy Satellite, Nonthermal Radiation, O Stars, Stellar Luminosity, Supernova Remnants, Very Large Array (Vla)

Scientific paper

Recent studies using the Very Large Array telescope have revealed the existence of two unusual extended nonthermal sources, G357.7 - 0.1 and G5.3 - 1.0. Classified earlier as supernova remnants, these sources have a marked axial symmetry and compact sources on the axis at one edge. Counterparts of these sources have been searched for in the Infrared Astronomical Satellite Point Source Catalogue, and an IRAS source showing the characteristic spectrum of an early type star embedded in a dusty cloud, coincident with the compact source in G357.7 - 0.1, is found. It is proposed that the compact object is an O star whose formation was triggered by the shock front of the diffuse radio source.

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