Wind-Swept Clouds and Possible Triggered Star-Formation associated with the Supernova Remnant G357.7+0.3

We present evidence for interaction between the supernova remnant (SNR) G357.7+0.3 and nearby molecular clouds, leading to the formation of wind-swept structures and bright emission rims. These features are not observed at visual wavelengths, but are clearly visible in mid-infrared (MIR) mapping und...

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Bibliographic Details
Published in:arXiv.org 2009-09
Main Authors: Phillips, J P, Ramos-Larios, G, Perez-Grana, J A
Format: Article
Language:English
Subjects:
Comets
Emission
Infrared analysis
Mapping
Molecular clouds
Outflow
Photometry
Polycyclic aromatic hydrocarbons
Space telescopes
Star formation
Stellar winds
Supernova remnants
Visual observation
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Summary:We present evidence for interaction between the supernova remnant (SNR) G357.7+0.3 and nearby molecular clouds, leading to the formation of wind-swept structures and bright emission rims. These features are not observed at visual wavelengths, but are clearly visible in mid-infrared (MIR) mapping undertaken using the Spitzer Space Telescope (SST). Analysis of one of these clouds, the bright cometary structure G357.46+0.60, suggests that it contains strong polycyclic aromatic hydrocarbon (PAH) emission features in the 5.8 and 8.0 microns photometric bands, and that these are highly variable over relatively small spatial scales. This source also appears to contain a YSO within the bright rim structure, with a steeply rising spectrum between 1.25 and 24 microns. Finally, it is noted that a further, conical emission region appears to be associated with the Mira V1139 Sco, and it is suggested that this may represent the case of a Mira outflow interacting with a SNR.
ISSN:2331-8422
DOI:10.48550/arxiv.0909.2065