| タイトル | A second supernova inside Puppis A? |
| 著者（英） | Hughes, J. P.; Kirschner, R. P.; Winkler, P. F.; Heathcote, S. R. |
| 著者所属（英） | Cerro Tololo Inter-American Observatory|Middlebury Coll.|Harvard-Smithsonian Center for Astrophysics |
| 発行日 | 1989-01-05 |
| 言語 | eng |
| 内容記述 | Narrow-band images of an unusual swirl structure located near the center of the Puppis A supernova remnant are presented which reveal three overlapping filamentary systems of highly diverse composition. One is dominated by emission lines of nitrogen, one by oxygen, and one by sulfur. Spectra indicate that these small rings have high velocities and a corresponding kinematic age of less than 800 yr. Heavy-element abundances are extremely high and different in each system, some reminiscent of knots in Cas A, and others of circumstellar matter observed surrounding supernova 1987A. The youth and unusual chemistry lead to the suggestion that a second supernova has exploded within the shell of Puppis A, giving rise to the swirl structure. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 89A26534 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/365356 |
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