資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://ir.lib.ncu.edu.tw/handle/987654321/101381
|
| 題名: | Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the sun |
| 作者: | 葉永烜;Rotundi, A.;Sierks, H.;Corte, V. Della;Fulle, M.;Gutierrez, P. J.;Lara, L.;Barbieri, C.;Lamy, P. L.;Rodrigo, R.;Koschny, D.;Rickman, H.;Keller, H. U.;López-Moreno, J. J.;Accolla, M.;Agarwal, J.;A'Hearn, M. F.;Altobelli, N.;Angrilli, F.;Barucci, M. A.;Bertaux, J.-L.;Bertini, I.;Bodewits, D.;Bussoletti, E.;Colangeli, L.;Cosi, M.;Cremonese, G.;Crifo, J.-F.;Da Deppo, V.;Davidsson, B.;Debei, S.;De Cecco, M.;Esposito, F.;Ferrari, M.;Fornasier, S.;Giovane, F.;Gustafson, B.;Green, S. F.;Groussin, O.;Grün, E.;Güttler, C.;Herranz, M. L.;Hviid, S. F.;Ip, W.;Ivanovski, S.;Jerónimo, J. M.;Jorda, L.;Knollenberg, J.;Kramm, R.;Kührt, E.;Küppers, M.;Lazzarin, M.;Leese, M. R.;López-Jiménez, A. C.;Lucarelli, F.;Lowry, S. C.;Marzari, F.;Epifani, E. Mazzotta;McDonnell, J. A. M.;Mennella, V.;Michalik, H.;Molina, A.;Morales, R.;Moreno, F.;Mottola, S.;Naletto, G.;Oklay, N.;Ortiz, J. L.;Palomba, E.;Palumbo, P.;Perrin, J.-M.;Rodríguez, J.;Sabau, L.;Snodgrass, C.;Sordini, R.;Thomas, N.;Tubiana, C.;Vincent, J.-B.;Weissman, P.;Wenzel, K.-P.;Zakharov, V.;Zarnecki, J. C. |
| 貢獻者: | 理學院天文研究所 |
| 關鍵詞: | Accretion;Astrophysics;Clouds;Comet heads;Comets;Dust;Grains;image analysis;Nuclei;Perihelions;Planetology;RESEARCH ARTICLE ABSTRACTS;Sciences of the Universe;Solar and Stellar Astrophysics;Spacecraft;Spectrometers;spectroscopy |
| 日期: | 2015-01-23 |
| 上傳時間: | 2026-04-21 14:32:12 (UTC+8) |
| 出版者: | American Association for the Advancement of Science;Washington: American Association for the Advancement of Science (AAAS) |
| 摘要: | 摘要： Critical measurements for understanding accretion and the dust/gas ratio in the solar nebula, where planets were forming 4.5 billion years ago, are being obtained by the GIADA (Grain Impact Analyser and Dust Accumulator) experiment on the European Space Agency’s Rosetta spacecraft orbiting comet 67P/Churyumov-Gerasimenko. Between 3.6 and 3.4 astronomical units inbound, GIADA and OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) detected 35 outflowing grains of mass 10−10to 10−7kilograms, and 48 grains of mass 10−5to 10−2kilograms, respectively. Combined with gas data from the MIRO (Microwave Instrument for the Rosetta Orbiter) and ROSINA (Rosetta Orbiter Spectrometer for Ion and Neutral Analysis) instruments, we find a dust/gas mass ratio of 4 ± 2 averaged over the sunlit nucleus surface. A cloud of larger grains also encircles the nucleus in bound orbits from the previous perihelion. The largest orbiting clumps are meter-sized, confirming the dust/gas ratio of 3 inferred at perihelion from models of dust comae and trails.
出版者： Washington: American Association for the Advancement of Science (AAAS)
出版日期： 2015-01-23
出處： Science, 2015-01, Vol.347 (6220), p.aaa3905--389
資源來源： American Association for the Advancement of Science
版權： Copyright © 2015 American Association for the Advancement of Science
版權： Copyright © 2015, American Association for the Advancement of Science
版權： CC0 1.0 - Universal
識別號： ISSN: 0036-8075
識別號： ISSN: 1095-9203
識別號： EISSN: 1095-9203
識別號： DOI: 10.1126/science.aaa3905
識別號： CODEN: SCIEAS |
| 顯示於類別: | [天文研究所] 期刊論文
|
文件中的檔案:
| 檔案 |
描述 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | | 0Kb | HTML | 33 | 檢視/開啟 |
|
在NCUIR中所有的資料項目都受到原著作權保護.
|
