Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko

N. Oklay; J. B. Vincent; H. Sierks; S. Besse; M. Pajola; I. Bertini; H. Rickman; F. La Forgia; A. M. Barucci; S. Fornasier; C. Barbieri; D. Koschny; P. L. Lamy; R. Rodrigo; J. Agarwal; M. F. A'Hearn; J. L. Bertaux; G. Cremonese; V. Da Deppo; B. Davidsson; S. Debei; M. De Cecco; M. Fulle; O. Groussin; P. J. Gutierrez; C. Guttler; S. F. Hviid; W. H. Ip; L. Jorda; H. U. Keller; J. Knollenberg; J. R. Kramm; E. Kuhrt; M. Kuppers; L. M. Lara; M. Lazzarin; J. J. Lopez-Moreno; F. Marzari; H. Michalik; G. Naletto; N. Thomas; C. Tubiana

doi:10.1051/0004-6361/201525994

Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko

N. Oklay, J. B. Vincent, H. Sierks, S. Besse, M. Pajola, I. Bertini, H. Rickman, F. La Forgia, A. M. Barucci, S. Fornasier, C. Barbieri, D. Koschny, P. L. Lamy, R. Rodrigo, J. Agarwal, M. F. A'Hearn, J. L. Bertaux, G. Cremonese, V. Da Deppo, B. DavidssonS. Debei, M. De Cecco, M. Fulle, O. Groussin, P. J. Gutierrez, C. Guttler, S. F. Hviid, W. H. Ip, L. Jorda, H. U. Keller, J. Knollenberg, J. R. Kramm, E. Kuhrt, M. Kuppers, L. M. Lara, M. Lazzarin, J. J. Lopez-Moreno, F. Marzari, H. Michalik, G. Naletto, N. Thomas, C. Tubiana

Graduate Institute of Astronomy

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We interpret multicolor data from OSIRISNAC for the remote-sensing exploration of comet 67P/Churyumov-Gerasimenko. 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.

Original language	English
Article number	A45
Journal	Astronomy and Astrophysics
Volume	583
DOIs	https://doi.org/10.1051/0004-6361/201525994
State	Published - 1 Nov 2015

Keywords

Comets: individual: 67P/Churyumov-Gerasimenko
Methods: data analysis
Techniques: imaging spectroscopy

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10.1051/0004-6361/201525994

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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., ... Tubiana, C. (2015). Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics, 583, Article A45. https://doi.org/10.1051/0004-6361/201525994

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title = "Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko",

abstract = "We interpret multicolor data from OSIRISNAC for the remote-sensing exploration of comet 67P/Churyumov-Gerasimenko. 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.",

keywords = "Comets: individual: 67P/Churyumov-Gerasimenko, Methods: data analysis, Techniques: imaging spectroscopy",

author = "N. Oklay and Vincent, {J. B.} and H. Sierks and S. Besse and M. Pajola and I. Bertini and H. Rickman and {La Forgia}, F. and Barucci, {A. M.} and S. Fornasier and C. Barbieri and D. Koschny and Lamy, {P. L.} and R. Rodrigo and J. Agarwal and A'Hearn, {M. F.} and Bertaux, {J. L.} and G. Cremonese and {Da Deppo}, V. and B. Davidsson and S. Debei and {De Cecco}, M. and M. Fulle and O. Groussin and Gutierrez, {P. J.} and C. Guttler and Hviid, {S. F.} and Ip, {W. H.} and L. Jorda and Keller, {H. U.} and J. Knollenberg and Kramm, {J. R.} and E. Kuhrt and M. Kuppers and Lara, {L. M.} and M. Lazzarin and Lopez-Moreno, {J. J.} and F. Marzari and H. Michalik and G. Naletto and N. Thomas and C. Tubiana",

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Oklay, N, Vincent, JB, Sierks, H, Besse, S, Pajola, M, Bertini, I, Rickman, H, La Forgia, F, Barucci, AM, Fornasier, S, Barbieri, C, Koschny, D, Lamy, PL, Rodrigo, R, Agarwal, J, A'Hearn, MF, Bertaux, JL, Cremonese, G, Da Deppo, V, Davidsson, B, Debei, S, De Cecco, M, Fulle, M, Groussin, O, Gutierrez, PJ, Guttler, C, Hviid, SF, Ip, WH, Jorda, L, Keller, HU, Knollenberg, J, Kramm, JR, Kuhrt, E, Kuppers, M, Lara, LM, Lazzarin, M, Lopez-Moreno, JJ, Marzari, F, Michalik, H, Naletto, G, Thomas, N & Tubiana, C 2015, 'Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko', Astronomy and Astrophysics, vol. 583, A45. https://doi.org/10.1051/0004-6361/201525994

TY - JOUR

T1 - Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko

AU - Oklay, N.

AU - Vincent, J. B.

AU - Sierks, H.

AU - Besse, S.

AU - Pajola, M.

AU - Bertini, I.

AU - Rickman, H.

AU - La Forgia, F.

AU - Barucci, A. M.

AU - Fornasier, S.

AU - Barbieri, C.

AU - Koschny, D.

AU - Lamy, P. L.

AU - Rodrigo, R.

AU - Agarwal, J.

AU - A'Hearn, M. F.

AU - Bertaux, J. L.

AU - Cremonese, G.

AU - Da Deppo, V.

AU - Davidsson, B.

AU - Debei, S.

AU - De Cecco, M.

AU - Fulle, M.

AU - Groussin, O.

AU - Gutierrez, P. J.

AU - Guttler, C.

AU - Hviid, S. F.

AU - Ip, W. H.

AU - Jorda, L.

AU - Keller, H. U.

AU - Knollenberg, J.

AU - Kramm, J. R.

AU - Kuhrt, E.

AU - Kuppers, M.

AU - Lara, L. M.

AU - Lazzarin, M.

AU - Lopez-Moreno, J. J.

AU - Marzari, F.

AU - Michalik, H.

AU - Naletto, G.

AU - Thomas, N.

AU - Tubiana, C.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - We interpret multicolor data from OSIRISNAC for the remote-sensing exploration of comet 67P/Churyumov-Gerasimenko. 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.

AB - We interpret multicolor data from OSIRISNAC for the remote-sensing exploration of comet 67P/Churyumov-Gerasimenko. 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.

KW - Comets: individual: 67P/Churyumov-Gerasimenko

KW - Methods: data analysis

KW - Techniques: imaging spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84946615949&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201525994

DO - 10.1051/0004-6361/201525994

M3 - 期刊論文

AN - SCOPUS:84946615949

SN - 0004-6361

VL - 583

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A45

ER -

Characterization of OSIRIS NAC filters for the interpretation of multispectral data of comet 67P/Churyumov-Gerasimenko

Abstract

Keywords

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