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https://ir.lib.ncu.edu.tw/handle/987654321/101634
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| 題名: | Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko |
| 作者: | 葉永烜;Oklay, N.;Vincent, J.-B.;Sierks, H.;Besse, S.;Pajola, M.;Bertini, I.;Rickman, H.;La Forgia, F.;Barucci, A. M.;Fornasier, S.;Barbieri, C.;Koschny, D.;Lamy, P. L.;Rodrigo, R.;Agarwal, J.;A’Hearn, M. F.;Bertaux, J.-L.;Cremonese, G.;Da Deppo, V.;Davidsson, B.;Debei, S.;De Cecco, M.;Fulle, M.;Groussin, O.;Gutiérrez, P. J.;Güttler, C.;Hviid, S. F.;Ip, W.-H.;Jorda, L.;Keller, H. U.;Knollenberg, J.;Kramm, J.-R.;Kührt, E.;Küppers, M.;Lara, L. M.;Lazzarin, M.;Lopez-Moreno, J. J.;Marzari, F.;Michalik, H.;Naletto, G.;Thomas, N.;Tubiana, C. |
| 貢獻者: | 理學院天文研究所 |
| 關鍵詞: | Astrophysics;Band spectra;Camber;Color;Comets;comets: individual: 67P/Churyumov-Gerasimenko;Instrumentation and Methods for Astrophysic;methods: data analysis;Physics;Reflectance;Sciences of the Universe;Solar and Stellar Astrophysics;Spectra;techniques: imaging spectroscopy;Tilt |
| 日期: | 2015-11-01 |
| 上傳時間: | 2026-04-21 14:39:38 (UTC+8) |
| 出版者: | EDP Sciences |
| 摘要: | 摘要： Context. We interpret multicolor data from OSIRISNAC for the remote-sensing exploration of comet 67P/Churyumov-Gerasimenko. Aims. We determine the most meaningful definition of color maps for the characterization of surface variegation with filters available on OSIRIS NAC. Methods. We analyzed laboratory spectra of selected minerals and olivine-pyroxene mixtures seen through OSIRIS NAC filters, with spectral methods existing in the literature: reflectance ratios, minimum band wavelength, spectral slopes, band tilt, band curvature, and visible tilt. Results. We emphasize the importance of reflectance ratios and particularly the relation of visible tilt vs. band tilt. This technique provides a reliable diagnostic of the presence of silicates. Color maps constructed by red-green-blue colors defined with the green, orange, red, IR, and Fe2O3 filters let us define regions that may significantly differ in composition.
出版者： EDP Sciences
出版日期： 2015-11-01
出處： Astronomy and astrophysics (Berlin), 2015-11, Vol.583, p.A45
資源來源： EDP Sciences
版權： licence_http://creativecommons.org/publicdomain/zero
識別號： ISSN: 0004-6361
識別號： ISSN: 1432-0746
識別號： EISSN: 1432-0746
識別號： DOI: 10.1051/0004-6361/201525994 |
| 顯示於類別: | [天文研究所] 期刊論文
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