, FIGURE 6.4-Comparaison des températures entre les observations VIRTIS-M et VIRTIS-H. 7.4. PRÉPARATION DES ÉCHANTILLONS

M. Variées, « MIXTES ») (a) Les spectres des PSOC 1532 utilisés dans les mélanges sont ici visible en vert. (b) Zoom de la figure 8, p.15

, 67% en masse) et de pyrrhotite (33% en masse) mais dont le PSOC 1532 vient de deux protocoles différents. Les spectres purs de PSOC 1532 et de pyrrhotite sont aussi représentés, FIGURE 8.15-Spectres de réflectance de mélanges à base de PSOC 1532

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!. .. Une-comète-haute-en-couleurs,

. .. De-67p, 39 3.8 Images et spectres VIRTIS, Images OSIRIS montrant la diversité des terrains rencontrés à la surface

.. .. Schéma-de-principe-de-l'imagerie-hyperspectrale,

. , 52 4.4 Indicateurs spectroscopiques calculé sur un spectre d'olivine, Les différents modes de vibrations de la molécules d'eau

V. .. Schéma-de,

L. Champs-de-vue-des-instruments-de-rosetta and V. .. De, 55 4.7 Design optique de VIRTIS-M. Le miroir M1 est pivotant, permettant de scanner la surface

V. .. Schéma-de-la-structure-de,

. .. Design-optique-de-virtis-h,

, Projection des ordres spectraux de VIRTIS-H sur le capteur et résolution, p.58

. .. , Résolution spectral des ordres en fonction de la longueur d'onde, p.59

. .. Matrice-infrarouge-de-virtis-h,

. .. , Spectre brut illustrant l'effet du filtre utilisé pour limiter le signal IR, p.62

. , Illustration de l'effet pair-impair sur un spectre VIRTIS-H

. De-l'ombre-À-la and . .. Virtis-h,

. , Moyenne temporelle des écarts type des observations VIRTIS-H noyaux entre MTP006 et MTP017

. , Altitude de la sonde par rapport à 67P et distance héliocentrique au cours de la mission (données VIRTIS)

. , Les paramètres b et c retranscrits pour de nombreuses expériences ou observations. (a) issu de Souchon et, 2011.

. , Écarts relatifs des albédos de diffusion simple dérivés pour VIRTIS-M (losange) et VIRTIS-H (croix) avec les modèles de Lommel-Seeliger et Hapke et avec une fonction de phase à un lobe (vert) et à deux lobes (violet)

, Écarts relatifs des albédos de diffusion simple dérivés pour VIRTIS-M (losange) et VIRTIS-H (croix) avec les modèles de Lommel-Seeliger (orange) et Hapke (bleu)

. , L'écart est ici selon la version de la fonction de phase mais chacun des modèles pris séparément

, Vu rapprochée de 67P prise par OSIRIS, à 8.9 km la résolution atteint ici 17 cm/pixel, p.111

. Mosaïque-d'image-osiris and . .. Carte-géologique-de-la-région-d'imhotep,

. , Cube VIRTIS où la région d'Imhotep

. Densité, normalisée) des observations VIRTIS-M visible et infrarouge retenues pour l'étude photométrique d'Imhotep

. , Paramètres photométriques des terrains couverts lisses ou irréguliers sélectionnés dans la région d'Imhotep

O. Images and N. De-la, Narrow angle camera ») illustrant les terrains sélectionnés pour l'étude locale

V. Observations and .. .. En-mode-raster,

, Réflectance et température des observations VIRTIS-M utilisé pour l'étude thermique, p.125

, Écart entre les températures VIRTIS-M normalisées par les températures VIRTIS-H avec ou sans prise en compte du décalage spatial entre les champs de vue, p.126

M. and V. .. , Comparaison des températures entre les observations VIRTIS, p.127

. , Images de poussières de l'expérience KOSI-3

. .. Le-spectro-gonio-radiomètre-de-l'ipag,

. , Modes d'observations du spectro-gonio-radiomètre

. , Spectres de surfaces lambertiennes absorbantes

. Sensibilité-du-spectro-gonio-radiomètre and . .. De-spectralon, , p.144

, Cartographie des observations VIRTIS-M sélectionnées pour l'étude expérimentale, p.147

. .. Spectre-virtis-de-référence-utilisé-pour-l'étude-expérimentale, , p.148

. .. , Spectres de réflectance de différents charbons (PSOC 1532) et goudrons (CT), p.150

. , Spectres de détection des ions sur les poussières Kenneth et Juliette de la comète 67P par l'instrument COSIMA de la sonde Rosetta

. Photographies-des-Échantillons-de-cristaux-de-pyrite and . .. De-pyrrhotite, , p.153

!. .. Allumer-le-feu,

. , Spectres des matériaux pures utilisés lors des expériences : dunites, PSOC 1532, pyrite et pyrrhotite

. .. Expériences, 156 TABLE DES FIGURES 7.13 Comparaison des spectres de pyrrhotite oxydée et non oxydée, Spectres de poudres de pyrrhotite utilisées lors des

. .. , Spectre et photographie de la dunite 2 dans son état original (taille < 80 µm), 160 7.15 Photographies MEB de poussière interplanétaire (IDPs) et de micrométéorites (UCAMM).162 7.16 Caractéristiques et photographies de poussières collectés dans la coma de 67P par MI

D. , C. , and G. .. ,

. Broyeurs and .. .. De-fonctionnement,

.. .. Protocole-pour-le-broyage-planétaire,

. .. Spectres-illustrant-l&apos;impact-d&apos;un-mélange-intime-ou-d&apos;un-mélange-spatial, 20 Photographies d'un mélange spatial ou intime entre du PSOC 1532 et de la dunite. Photographie d'un agrégat de PSOC 1532 recouvert de pyrrhotite, vol.167

. Photographies-meb-de-pyrrhotite and .. .. De-dunite,

. , Spectres de PSOC 1532 de différente granulométrie

. , Photos binoculaires des échantillons B et C de la figure

, Spectre en réflectance des échantillons de dunite 1 et 2 à différentes tailles, p.177

, Photos des échantillons de dunite 2 réalisées à la binoculaire correspondant à la figure 8, vol.6, p.178

. , Spectres des mélanges intime et spatial de dunite et de PSOC 1532

, Photos binoculaires des mélanges spatial et intime du PSOC 1532 et de la dunite, p.179

. .. , Spectre des deux types de mélanges de la pyrrhotite avec la dunite, p.181

. .. Dunite, Photos binoculaires des mélanges de pyrrhotite et, p.181

. , Mélange ternaire PSOC 1532/dunite/pyrrhotite, Spectres et photos binoculaires du mélange ternaire PSOC 1532-pyrrhotitedunite

, Mélange binaire mixte PSOC 1532/pyrrhotite. Pyrrhotite en différentes proportions, p.187

, Mélange binaire mixte PSOC 1532/pyrrhotite. PSOC 1532 venant de différents protocoles, p.189

. , Photos binoculaires des mélanges de PSOC 1532/pyrrhotite

. , Spectres des mélanges de PSOC 1532, pyrrhotite et dunite avec une proportions de dunite croissante

. , Schéma de l'interaction rayonnement/matière à l'échelle d'un grain et à l'échelle de la surface

. , Paramètre de taille balayés relatif à l'expérience

. , Spectres d'échantillons d'olivine de différentes granulométries

. , Influence spectrale due à la présence de petites particules à la surface de grains plus grossiers

, Structure en château de fée (fairy castle) pour différent échantillons broyés très finement, vol.201

. , Schéma illustrant un mélange linéaire entre deux spectres de la météorite ferreuse de Canyon Diablo

, Spectre en réflectance de poudres de troïlite avec différentes tailles de grains, p.205

, Spectres illustrant l'impact d'un composé sombre dans un mélange avec un composé clair, p.207

, Mélanges de tailles variées de montmorillonite avec une quantité croissante d'anthracite, p.207

, Photographie d'agrégats de dunite et de PSOC 1532 recouverts de pyrrhotite, p.209

, Spectres de mélanges de PSOC 1532 et de pyrrhotite avec ou sans dunite, p.211

. .. , Comparaison entre mélanges binaires de PSOC 1532 et pyrrhotite, p.213

. , Liste des tableaux 3.1 Résumé des instruments de Rosetta

. , 106 5.2 Paramètres photométriques des zones sélectionnées sur Imhotep (étude photométrique locale)

, Cubes VIRTIS-M acquis en mode balayage et cube VIRTIS-H correspondants, p.123

, Compositions des échantillons sélectionnés dans l'étude expérimentale, p.161

. Caractéristiques-techniques-de and . .. Virtis,

, Cubes VIRTIS-M visible et infrarouge utilisés dans l'étude de la région Imhotep, p.324

, Liste des cubes utilisés pour l'assemblage du spectre de référence VIRTIS-M, p.325

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