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Evidence for highly processed material ejected from Abell 30

Hazard, C. and Terlevich, R. and Morton, D. C. and Sargent, W. L. W. and Ferland, G. (1980) Evidence for highly processed material ejected from Abell 30. Nature, 285 (5765). pp. 463-464. ISSN 0028-0836. doi:10.1038/285463a0.

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The discovery of compact knots of highly processed material apparently ejected from the central star of the emission nebula Abell 30 is reported here. This emission nebula possesses other unusual features. The extended emission region, ∼2 arc min in diameter has a very low surface brightness and exhibits a high degree of circular symmetry. The central star 05 fep, V = 14.3 is remarkable for its very high temperature of the order 2 × 10^5 K, as indicated by the strong broad O VI, He II and C IV emission lines in its spectrum and the strong [Ne v] emission in the embedding nebulosity. Furthermore the star seems to be embedded in a resolved (∼30 arc s) source of IR emission. These new observations emphasize the peculiar nature of A30 and its importance in studies of stellar evolution.

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Additional Information:© Nature Publishing Group 1980. Received 10 March; accepted 11 April 1980. We thank J. Truran for helpful discussions.
Issue or Number:5765
Record Number:CaltechAUTHORS:20190507-145525286
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95316
Deposited By: George Porter
Deposited On:07 May 2019 22:41
Last Modified:16 Nov 2021 17:11

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