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| 題名: | Spectrophotometry of the Khonsu region on the comet 67P/Churyumov-Gerasimenko using OSIRIS instrument images |
| 作者: | 葉永烜;Deshapriya, J. D. P.;Barucci, M. A.;Fornasier, S.;Feller, C.;Hasselmann, P. H.;Sierks, H.;El-Maarry, M.R.;Pajola, M.;Barbieri, C.;Lamy, P. L.;Rodrigo, R.;Koschny, D.;Rickman, H.;Agarwal, J.;A'Hearn, M. F.;Bertaux, J.-L.;Bertini, I.;Boudreault, S.;Cremonese, G.;Da Deppo, V.;Davidsson, B. J. R.;Debei, S.;Deller, J.;De Cecco, M.;Fulle, M.;Gicquel, A.;Groussin, O.;Gutierrez, P. J.;Güttler, C.;Hofmann, M.;Hviid, S. F.;Ip, W.;Jorda, L.;Keller, H. U.;Knollenberg, J.;Kramm, R.;Kührt, E.;Küppers, M.;Lara, L.;Lazzarin, M.;Lopez Moreno, J.J.;Marzari, F.;Mottola, S.;Naletto, G.;Oklay, N.;Perna, D.;Pommerol, A.;Thomas, N.;Tubiana, C.;Vincent, J.-B. |
| 貢獻者: | 理學院天文研究所 |
| 關鍵詞: | Astrophysics;comets: individual: 67P/Churyumov-Gerasimenko;Earth and Planetary Astrophysics;Sciences of the Universe;techniques: photometric |
| 日期: | 2016-01-01 |
| 上傳時間: | 2026-04-21 14:45:27 (UTC+8) |
| 出版者: | Oxford University Press;Oxford University Press (OUP): Policy P - Oxford Open Option A |
| 摘要: | 摘要： Our work focuses on the spectrophotometric analysis of selected terrain and bright patches in the Khonsu region on the comet 67P/Churyumov-Gerasimenko. Despite the variety of geological features, their spectrophotometric properties appear to indicate a similar composition. It is noticeable that the smooth areas in Khonsu possess similar spectrophotometric behaviour to some other regions of the comet. We observed bright patches on Khonsu with an estimation of > 40% of normal albedo and suggest that they are associated to H2O ice. One of the studied bright patches has been observed to exist on the surface for more than 5 months without a major decay of its size, implying the existence of potential subsurface icy layers. Its location may be correlated with a cometary outburst during the perihelion passage of the comet in August 2015, and we interpret it to have triggered the surface modifications necessary to unearth the stratified icy layers beneath the surface. A boulder analysis on Khonsu leads to a power-law index of -3.1 +0.2/-0.3 suggesting a boulder formation, shaped by varying geological processes for different morphological units.
出版者： Oxford University Press (OUP): Policy P - Oxford Open Option A
出版日期： 2016-11-01
出處： Monthly notices of the Royal Astronomical Society, 2016-11, Vol.462 (Suppl 1), p.S274-S286
資源來源： Alma/SFX Local Collection
版權： licence_http://creativecommons.org/publicdomain/zero
識別號： ISSN: 0035-8711
識別號： ISSN: 1365-2966
識別號： ISSN: 1365-8711
識別號： EISSN: 1365-2966
識別號： DOI: 10.1093/mnras/stw2530 |
| 顯示於類別: | [天文研究所] 期刊論文
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