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Reflectance and Emissivity spectra of graphite as potential darkening agent for Mercury from the UV to the TIR and its Comparison to Remote Sensing Measurements from MESSENGER and Mertis on BepiColombo

Maturilli, Alessandro and Helbert, Jörn and Varatharajan, Indhu (2018) Reflectance and Emissivity spectra of graphite as potential darkening agent for Mercury from the UV to the TIR and its Comparison to Remote Sensing Measurements from MESSENGER and Mertis on BepiColombo. Carbon in the Solar System Workshop, 25. - 27. Apr. 2018, Denver, USA.

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Official URL: https://carbon-workshop.arc.nasa.gov/program.html

Abstract

For long time Mercury was considered a planet very similar to the Moon. Both are small rocky bodies in the inner solar system with thin exospheres and no large scale traces of recent geological activity. However Mercury’s surface reflects much less sunlight than the Moon. Trying to explain the reasons for this difference, significant abundances of iron and titanium (and their oxides) were proposed for the Hermean surface. But the NASA MESSENGER instruments found only small abundances of iron, confirming earlier ground-based spectroscopy observations, and virtually no titanium. Therefore neither of the elements can account for this diversity. New analysis of MESSENGER data acquired for the darkest regions of Mercury’s surface suggest that the unknown darkening material could be carbon, in particular as the mineral graphite [1] whose abundance in the darker regions is predicted to be 1 to 3 wt% higher than the surroundings.

Item URL in elib:https://elib.dlr.de/124757/
Document Type:Conference or Workshop Item (Speech)
Title:Reflectance and Emissivity spectra of graphite as potential darkening agent for Mercury from the UV to the TIR and its Comparison to Remote Sensing Measurements from MESSENGER and Mertis on BepiColombo
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.deUNSPECIFIED
Helbert, JörnJoern.Helbert (at) dlr.dehttps://orcid.org/0000-0001-5346-9505
Varatharajan, Indhuindhu.varatharajan (at) dlr.deUNSPECIFIED
Date:April 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Mercury, carbon, MERTIS, grafite
Event Title:Carbon in the Solar System Workshop
Event Location:Denver, USA
Event Type:international Conference
Event Dates:25. - 27. Apr. 2018
Organizer:SSERVI
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):Projekt BepiColombo MERTIS und BELA
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Maturilli, Alessandro
Deposited On:11 Dec 2018 09:21
Last Modified:31 Jul 2019 20:22

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