Comparison of space weathering spectral changes induced by solar wind and micrometeoroid impacts using ion- and femtosecond-laser-irradiated olivine and pyroxene

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dc.contributor.author Chrbolková, Kateřina
dc.contributor.author Brunetto, Rosario
dc.contributor.author Ďurech, Josef
dc.contributor.author Kohout, Tomáš
dc.contributor.author Mizohata, Kenichiro
dc.contributor.author Malý, Petr
dc.contributor.author Dědič, Václav
dc.contributor.author Lantz, Cateline
dc.contributor.author Penttilä, Antti
dc.contributor.author Trojánek, František
dc.contributor.author Maturilli, Alessandro
dc.date.accessioned 2021-10-26T07:03:02Z
dc.date.available 2021-10-26T07:03:02Z
dc.date.issued 2021-10-22
dc.identifier.citation Chrbolková , K , Brunetto , R , Ďurech , J , Kohout , T , Mizohata , K , Malý , P , Dědič , V , Lantz , C , Penttilä , A , Trojánek , F & Maturilli , A 2021 , ' Comparison of space weathering spectral changes induced by solar wind and micrometeoroid impacts using ion- and femtosecond-laser-irradiated olivine and pyroxene ' , Astronomy & Astrophysics , vol. 654 , no. A&A , 143 . https://doi.org/10.1051/0004-6361/202140372
dc.identifier.other PURE: 157188197
dc.identifier.other PURE UUID: b65f5d15-e690-4f96-b665-ad784476660a
dc.identifier.other WOS: 000709943900012
dc.identifier.other ORCID: /0000-0003-4458-3650/work/112285918
dc.identifier.other ORCID: /0000-0001-7403-1721/work/112286322
dc.identifier.other ORCID: /0000-0003-1703-2247/work/112287270
dc.identifier.other ORCID: /0000-0003-2742-7939/work/112292457
dc.identifier.uri http://hdl.handle.net/10138/335664
dc.description.abstract Context. Space weathering is a process that changes the surface of airless planetary bodies. Prime space weathering agents are solar wind irradiation and micrometeoroid bombardment. These processes alter planetary reflectance spectra and often modify their compositional diagnostic features. Aims. In this work we focused on simulating and comparing the spectral changes caused by solar wind irradiation and by micrometeoroid bombardment to gain a better understanding of these individual space weathering processes. Methods. We used olivine and pyroxene pellets as proxies for planetary materials. To simulate solar wind irradiation we used hydrogen, helium, and argon ions with energies from 5 to 40 keV and fluences of up to 10(18) particles cm(-2). To simulate micrometeoroid bombardment we used individual femtosecond laser pulses. We analysed the corresponding evolution of different spectral parameters, which we determined by applying the Modified Gaussian Model, and we also conducted principal component analysis. Results. The original mineralogy of the surface influences the spectral evolution more than the weathering agent, as seen from the diverse evolution of the spectral slope of olivine and pyroxene upon irradiation. The spectral slope changes seen in olivine are consistent with observations of A-type asteroids, while the moderate to no slope changes observed in pyroxene are consistent with asteroid (4) Vesta. We also observed some differences in the spectral effects induced by the two weathering agents. Ions simulating solar wind have a smaller influence on longer wavelengths of the spectra than laser irradiation simulating micrometeoroid impacts. This is most likely due to the different penetration depths of ions and laser pulses. Our results suggest that in some instances it might be possible to distinguish between the contributions of the two agents on a weathered surface. en
dc.format.extent 17
dc.language.iso eng
dc.relation.ispartof Astronomy & Astrophysics
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 115 Astronomy, Space science
dc.subject planets and satellites: surfaces
dc.subject solar wind
dc.subject meteorites, meteors, meteoroids
dc.subject methods: data analysis
dc.subject techniques: spectroscopic
dc.subject MODIFIED GAUSSIAN MODEL
dc.subject NEAR-EARTH
dc.subject DOMINATED ASTEROIDS
dc.subject IRON NANOPARTICLES
dc.subject REFLECTANCE
dc.subject SIMULATION
dc.subject ITOKAWA
dc.subject SURFACE
dc.subject BELT
dc.subject MINERALOGY
dc.title Comparison of space weathering spectral changes induced by solar wind and micrometeoroid impacts using ion- and femtosecond-laser-irradiated olivine and pyroxene en
dc.type Article
dc.contributor.organization Department of Geosciences and Geography
dc.contributor.organization Geology and Geophysics
dc.contributor.organization Department of Physics
dc.contributor.organization Planetary-system research
dc.contributor.organization Materials Physics
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1051/0004-6361/202140372
dc.relation.issn 0004-6361
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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