Spectral parameters for Dawn FC color data

Carbonaceous chondrites and aqueous alteration products as potential cerean analog materials

Tanja Schäfer, Andreas Nathues, Kurt Mengel, Matthew Richar Izawa, Edward A. Cloutis, Michael Schäfer, Martin Hoffmann

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We identified a set of spectral parameters based on Dawn Framing Camera (FC) bandpasses, covering the wavelength range 0.4-1.0. μm, for mineralogical mapping of potential chondritic material and aqueous alteration products on dwarf planet Ceres. Our parameters are inferred from laboratory spectra of well-described and clearly classified carbonaceous chondrites representative for a dark component. We additionally investigated the FC signatures of candidate bright materials including carbonates, sulfates and hydroxide (brucite), which can possibly be exposed on the cerean surface by impact craters or plume activity. Several materials mineralogically related to carbonaceous chondrites, including pure ferromagnesian phyllosilicates, and serpentinites were also investigated. We tested the potential of the derived FC parameters for distinguishing between different carbonaceous chondritic materials, and between other plausible cerean surface materials. We found that the major carbonaceous chondrite groups (CM, CO, CV, CK, and CR) are distinguishable using the FC filter ratios 0.56/0.44. μm and 0.83/0.97. μm. The absorption bands of Fe-bearing phyllosilicates at 0.7 and 0.9. μm in terrestrial samples and CM carbonaceous chondrites can be detected by a combination of FC band parameters using the filters at 0.65, 0.75, 0.83, 0.92 and 0.97. μm. This set of parameters serves as a basis to identify and distinguish different lithologies on the cerean surface by FC multispectral data.

Original languageEnglish
Pages (from-to)149-160
Number of pages12
JournalIcarus
Volume265
DOIs
Publication statusPublished - Feb 1 2016
Externally publishedYes

Fingerprint

framing cameras
carbonaceous chondrites
carbonaceous chondrite
analogs
color
products
phyllosilicate
filter
dwarf planets
brucite
filters
carbonaceous materials
lithology
crater
hydroxide
craters
planet
plume
hydroxides
plumes

Keywords

  • Asteroid Ceres
  • Meteorites
  • Mineralogy
  • Spectroscopy

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Spectral parameters for Dawn FC color data : Carbonaceous chondrites and aqueous alteration products as potential cerean analog materials. / Schäfer, Tanja; Nathues, Andreas; Mengel, Kurt; Richar Izawa, Matthew; Cloutis, Edward A.; Schäfer, Michael; Hoffmann, Martin.

In: Icarus, Vol. 265, 01.02.2016, p. 149-160.

Research output: Contribution to journalArticle

Schäfer, Tanja ; Nathues, Andreas ; Mengel, Kurt ; Richar Izawa, Matthew ; Cloutis, Edward A. ; Schäfer, Michael ; Hoffmann, Martin. / Spectral parameters for Dawn FC color data : Carbonaceous chondrites and aqueous alteration products as potential cerean analog materials. In: Icarus. 2016 ; Vol. 265. pp. 149-160.
@article{37f60dbbbdf54477b153958f424a69b9,
title = "Spectral parameters for Dawn FC color data: Carbonaceous chondrites and aqueous alteration products as potential cerean analog materials",
abstract = "We identified a set of spectral parameters based on Dawn Framing Camera (FC) bandpasses, covering the wavelength range 0.4-1.0. μm, for mineralogical mapping of potential chondritic material and aqueous alteration products on dwarf planet Ceres. Our parameters are inferred from laboratory spectra of well-described and clearly classified carbonaceous chondrites representative for a dark component. We additionally investigated the FC signatures of candidate bright materials including carbonates, sulfates and hydroxide (brucite), which can possibly be exposed on the cerean surface by impact craters or plume activity. Several materials mineralogically related to carbonaceous chondrites, including pure ferromagnesian phyllosilicates, and serpentinites were also investigated. We tested the potential of the derived FC parameters for distinguishing between different carbonaceous chondritic materials, and between other plausible cerean surface materials. We found that the major carbonaceous chondrite groups (CM, CO, CV, CK, and CR) are distinguishable using the FC filter ratios 0.56/0.44. μm and 0.83/0.97. μm. The absorption bands of Fe-bearing phyllosilicates at 0.7 and 0.9. μm in terrestrial samples and CM carbonaceous chondrites can be detected by a combination of FC band parameters using the filters at 0.65, 0.75, 0.83, 0.92 and 0.97. μm. This set of parameters serves as a basis to identify and distinguish different lithologies on the cerean surface by FC multispectral data.",
keywords = "Asteroid Ceres, Meteorites, Mineralogy, Spectroscopy",
author = "Tanja Sch{\"a}fer and Andreas Nathues and Kurt Mengel and {Richar Izawa}, Matthew and Cloutis, {Edward A.} and Michael Sch{\"a}fer and Martin Hoffmann",
year = "2016",
month = "2",
day = "1",
doi = "10.1016/j.icarus.2015.10.005",
language = "English",
volume = "265",
pages = "149--160",
journal = "Icarus",
issn = "0019-1035",
publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Spectral parameters for Dawn FC color data

T2 - Carbonaceous chondrites and aqueous alteration products as potential cerean analog materials

AU - Schäfer, Tanja

AU - Nathues, Andreas

AU - Mengel, Kurt

AU - Richar Izawa, Matthew

AU - Cloutis, Edward A.

AU - Schäfer, Michael

AU - Hoffmann, Martin

PY - 2016/2/1

Y1 - 2016/2/1

N2 - We identified a set of spectral parameters based on Dawn Framing Camera (FC) bandpasses, covering the wavelength range 0.4-1.0. μm, for mineralogical mapping of potential chondritic material and aqueous alteration products on dwarf planet Ceres. Our parameters are inferred from laboratory spectra of well-described and clearly classified carbonaceous chondrites representative for a dark component. We additionally investigated the FC signatures of candidate bright materials including carbonates, sulfates and hydroxide (brucite), which can possibly be exposed on the cerean surface by impact craters or plume activity. Several materials mineralogically related to carbonaceous chondrites, including pure ferromagnesian phyllosilicates, and serpentinites were also investigated. We tested the potential of the derived FC parameters for distinguishing between different carbonaceous chondritic materials, and between other plausible cerean surface materials. We found that the major carbonaceous chondrite groups (CM, CO, CV, CK, and CR) are distinguishable using the FC filter ratios 0.56/0.44. μm and 0.83/0.97. μm. The absorption bands of Fe-bearing phyllosilicates at 0.7 and 0.9. μm in terrestrial samples and CM carbonaceous chondrites can be detected by a combination of FC band parameters using the filters at 0.65, 0.75, 0.83, 0.92 and 0.97. μm. This set of parameters serves as a basis to identify and distinguish different lithologies on the cerean surface by FC multispectral data.

AB - We identified a set of spectral parameters based on Dawn Framing Camera (FC) bandpasses, covering the wavelength range 0.4-1.0. μm, for mineralogical mapping of potential chondritic material and aqueous alteration products on dwarf planet Ceres. Our parameters are inferred from laboratory spectra of well-described and clearly classified carbonaceous chondrites representative for a dark component. We additionally investigated the FC signatures of candidate bright materials including carbonates, sulfates and hydroxide (brucite), which can possibly be exposed on the cerean surface by impact craters or plume activity. Several materials mineralogically related to carbonaceous chondrites, including pure ferromagnesian phyllosilicates, and serpentinites were also investigated. We tested the potential of the derived FC parameters for distinguishing between different carbonaceous chondritic materials, and between other plausible cerean surface materials. We found that the major carbonaceous chondrite groups (CM, CO, CV, CK, and CR) are distinguishable using the FC filter ratios 0.56/0.44. μm and 0.83/0.97. μm. The absorption bands of Fe-bearing phyllosilicates at 0.7 and 0.9. μm in terrestrial samples and CM carbonaceous chondrites can be detected by a combination of FC band parameters using the filters at 0.65, 0.75, 0.83, 0.92 and 0.97. μm. This set of parameters serves as a basis to identify and distinguish different lithologies on the cerean surface by FC multispectral data.

KW - Asteroid Ceres

KW - Meteorites

KW - Mineralogy

KW - Spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84946429724&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84946429724&partnerID=8YFLogxK

U2 - 10.1016/j.icarus.2015.10.005

DO - 10.1016/j.icarus.2015.10.005

M3 - Article

VL - 265

SP - 149

EP - 160

JO - Icarus

JF - Icarus

SN - 0019-1035

ER -