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Emissivity and reflectance measurement at low and high T of different hydrous salts: a tool to study the surface of the icy planets

Comodi, P. and Fastelli, M. and Zucchini, A. and Maturilli, Alessandro (2018) Emissivity and reflectance measurement at low and high T of different hydrous salts: a tool to study the surface of the icy planets. EPSC 2018, 16.-21. Sep 2018, Berlin, Deutschland.

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Official URL: https://meetingorganizer.copernicus.org/EPSC2018/poster_programme/29480

Abstract

Icy planets, in particular Jupiter’s moons, have attracted the scientific investigation due to the likely presence of oceans under crust which may potentially support life. Recent decision of NASA to go forward with plans for new mission to Europa provides strong incentives to deep the knowledge of the surface composition trough the analysis of exiting spacecraft data and telescopic observation. Really for the present-day researchers consider the beneath the icy surface of Europa is the most promising place to look environments suitable for life The non-ice Europa’s materials represent a question up to know not completely solved notwithstanding its relevance in planetary science and astrobiology. Preliminary data indicate that chloride and sulphate hydrates are important as extraterrestrial salts but a good database on the spectral features of some of them is lucking. The data known usually are restricted in a small frequency range and the collection of data is a function of temperature, atmosphere composition and are well grain distribution is very lacking. The collection of a library of possible non-ice spectra should be fundamental for a correct and exhaustive interpretation of the remote data. Recently Hanley et al (2016) [1] published reflectance spectra of hydrated chlorite salts, at room and low temperature to observe the effects of temperature on diagnostic spectral features. They showed that at low temperature increase the resolution of the spectra since the bands become narrower with sharper and better defined minima and showed distint spectra features which should be interesting to interpretate remote sensing data. About sulphate minerals there are a more extensive library, but a systematic study of the evolution of the spectra with chemistry, temperature and atmosphere composition is lacking. Moreover the published data refer to a limited spectra range, usually under 2.5 micron, where the sulphate signature is very poor (Dalton III B., 2003) [2]

Item URL in elib:https://elib.dlr.de/125340/
Document Type:Conference or Workshop Item (Poster)
Title:Emissivity and reflectance measurement at low and high T of different hydrous salts: a tool to study the surface of the icy planets
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Comodi, P.Dipartimento di di Fisica e Geologia, University of Perugia, ItalyUNSPECIFIED
Fastelli, M.Dipartimento di di Fisica e Geologia, University of Perugia, ItalyUNSPECIFIED
Zucchini, A.Dipartimento di di Fisica e Geologia, University of Perugia, ItalyUNSPECIFIED
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.deUNSPECIFIED
Date:September 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:spectroscopy, temperature dependence, icy planets, hydrous salts
Event Title:EPSC 2018
Event Location:Berlin, Deutschland
Event Type:international Conference
Event Dates:16.-21. Sep 2018
Organizer:Europlanet
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:19 Dec 2018 07:48
Last Modified:31 Jul 2019 20:23

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