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| DOI | 10.1126/science.257.5078.1926 |
| Comet Yanaka (1988r): A new class of carbon-poor comet | |
| Fink U. | |
| 发表日期 | 1992 |
| ISSN | 0036-8075 |
| 起始页码 | 1926 |
| 结束页码 | 1929 |
| 卷号 | 257期号:5078 |
| 英文摘要 | As part of a program to determine the chemical composition of a sample population of comets, a very unusual comet, Yanaka (1988r), was observed in January 1989. Although the comet showed the usual emissions of OI and NH 2, it did not display any hint of C2 or CN emission. The comet is depleted in C2 by at least a factor of 100 and in CN by a factor of 25 relative to typical comets. If comets originate from interstellar clouds, Yanaka (1988r) could be an interloper from a cloud of different composition. If Yanaka (1988r) was formed within our solar system, the solar nebula was less uniform than assumed by most present models of formation. |
| 英文关键词 | chemistry; comet Yanaka (1988r); interstellar cloud; solar nebula |
| 语种 | 英语 |
| 来源期刊 | Science
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/243698 |
| 作者单位 | Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, United States |
| 推荐引用方式 GB/T 7714 | Fink U.. Comet Yanaka (1988r): A new class of carbon-poor comet[J],1992,257(5078). |
| APA | Fink U..(1992).Comet Yanaka (1988r): A new class of carbon-poor comet.Science,257(5078). |
| MLA | Fink U.."Comet Yanaka (1988r): A new class of carbon-poor comet".Science 257.5078(1992). |
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