TY  -  
T1  - Absolute spectral modelling of asteroid (4) Vesta 
SN  -  /  
UR  - http://hdl.handle.net/10138/300975 
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A1  - Martikainen, Julia; Penttilä, Antti; Gritsevich, M.; Videen, Gorden; Muinonen, Karri Olavi 
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PB  -  
Y1  - 2019 
LA  - eng 
AB  - We present a new physics-based approach to model the absolute reflectance spectra of asteroid (4) Vesta. The spectral models are derived by utilizing a ray-optics code that simulates light scattering by particles large compared to the wavelength of the incident light. In the light of the spectral data obtained by the Dawn spacecraft, we use howardite powder to model Vesta's surface regolith and its particle size distribution for 10-200 mu m sized particles. Our results show that the modelled spe... 
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KW  - DAWN; DISCRETE RANDOM-MEDIA; DIVERSITY; MAIN-BELT; METEORITES; PHOTOMETRY; REGOLITH; SCATTERING; SPECTROSCOPY; methods: numerical; minor planets, asteroids: individual: Vesta; scattering; techniques: spectroscopic; 115 Astronomy, Space science 
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