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The W28 Supernova and the Surrounding Interstellar Medium

Published online by Cambridge University Press:  04 August 2017

W. J. Zealey ,
H. T. MacGillivray ,
D. Malin  and
H. Hartl
W. J. Zealey
Affiliation:
United Kingdom Infrared Telescope of the Royal Observatory Edinburgh
H. T. MacGillivray
Affiliation:
Royal Observatory Edinburgh
D. Malin
Affiliation:
Anglo Australian Observatory, Astronomisches Institut der Universitat Innsbruck
H. Hartl
Affiliation:
Anglo Australian Observatory, Astronomisches Institut der Universitat Innsbruck

Extract

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A large shell, 1.5 degrees in diameter, outlined by nebulosity and dust clouds has been found centred on the W28 supernova remnant. Obscuration has been studied over a 2 degree square area centred on W28. The W28 SNR is coincident with a region of reduced obscuration. The densest parts of the obscuration AB≥ 4m is coincident with the molecular clouds associated with M20 and the OH maser to the south of M20.

The observed absorption is interpreted as being the result of the expansion of the W28 SNR into an older pre-existing SNR or stellar wind bubble.

Type
II. Middle Aged and Older Supernova Remnants
Information
Symposium - International Astronomical Union , Volume 101: Supernova Remnants and Their X-Ray Emission , 1983 , pp. 267 - 272
Copyright
Copyright © Reidel 1983 

References

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