| タイトル | First images of a possible CO(+)-tail of comet P/Schwassmann-Wachmann 1 observed against the dust coma background |
| 本文（外部サイト） | http://hdl.handle.net/2060/19930009986 |
| 著者（英） | Bonev, T.; Rauer, H.; Ivanova, Violeta; Jockers, Klaus |
| 著者所属（英） | Max-Planck-Inst. fuer Aeronomie |
| 発行日 | 1992-01-01 |
| 言語 | eng |
| 内容記述 | Comet P/Schwassmann-Wachmann 1 was observed with the 2m-Ritchey-Cretien Telescope of the Bulgarian National Observatory, Rozhen, Bulgaria, using the CCD-camera and focal reducer of the Max-Planck-Institute for Aeronomy. Images were taken in a red continuum window and in the 2-0 A(exp 2)Pi - X(exp 2)Sigma(+) band of CO(+) located in the blue part of the spectrum. The red images reveal an extended dust coma. From a comparison of the red and blue images a dust reddening of 13.2 percent per 1000 A is derived. At 642 nm the magnitude of the comet with a square diaphragm of 4.5 arcsec is 16.6. The blue images, taken in the CO(+) band, show a significantly different brightness distribution which is interpreted as presence of a CO(+) coma and tail superimposed on the continuum. A column density of several 10(exp 10) CO(+) molecules cm(exp -2) is derived. The tail thickness of 10(exp 5) km is unexpectedly small. We estimate the CO(+) production rate to about 6 x 10(exp 26) CO(+) particles s(exp -1). This value does not support the idea that the outbursts of this comet are caused by crystallization of amorphous water ice. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 93N19175 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/123646 |
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