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Smoking supernovae

Gomez, Haley Louise, Eales, Stephen Anthony and Dunne, L. 2007. Smoking supernovae. International Journal of Astrobiology 6 (2) , pp. 159-167. 10.1017/S1473550407003552

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The question ‘Are supernovae important sources of dust?’ is a contentious one. Observations with the Infrared Astronomical Satellite (IRAS) and the Infrared Space Observatory (ISO) only detected very small amounts of hot dust in supernova remnants. Here, we review observations of two young Galactic remnants with the Submillimetre Common User Bolometer Array (SCUBA), which imply that large quantities of dust are produced by supernovae. The association of dust with the Cassiopeia A remnant is in question owing to the contamination of foreground material. In this paper, we compare the emission from cold dust with CO emission towards Kepler’s supernova remnant. We detect very little CO at the location of the submillimetre peaks. A comparison of masses from the CO and the dust clouds are made, and we estimate the 3σ upper limit on the gas-to-dust ratios to be in the range 20–60. These results suggest that we cannot yet rule out freshly-formed or swept-up circumstellar dust in Kepler’s supernova remnant.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: astronomy; Cassiopeia A; interstellar dust; Kepler; supernovae
Additional Information: Pdf uploaded in accordance with publisher's policy at (accessed 25/02/2014).
Publisher: Cambridge University Press
ISSN: 1473-5504
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 04:51

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