Abstract
| Original language | English |
|---|---|
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 483 |
| Issue number | 2 |
| Pages (from-to) | 1952–1956 |
| Number of pages | 5 |
| ISSN | 0035-8711 |
| DOIs | |
| Publication status | Published - Feb 2019 |
| MoE publication type | A1 Journal article-refereed |
Fields of Science
- 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
Cite this
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Absolute spectral modelling of asteroid (4) Vesta. / Martikainen, Julia ; Penttilä, Antti; Gritsevich, M.; Videen, Gorden; Muinonen, Karri Olavi.
In: Monthly Notices of the Royal Astronomical Society, Vol. 483, No. 2, 02.2019, p. 1952–1956.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Absolute spectral modelling of asteroid (4) Vesta
AU - Martikainen, Julia
AU - Penttilä, Antti
AU - Gritsevich, M.
AU - Videen, Gorden
AU - Muinonen, Karri Olavi
PY - 2019/2
Y1 - 2019/2
N2 - 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 spectrum mimics well the observations. The best match was found using a power-law particle size distribution with an index 3.2. This suggests that Vesta's regolith is dominated by howardite particles
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 spectrum mimics well the observations. The best match was found using a power-law particle size distribution with an index 3.2. This suggests that Vesta's regolith is dominated by howardite particles
KW - DAWN
KW - DISCRETE RANDOM-MEDIA
KW - DIVERSITY
KW - MAIN-BELT
KW - METEORITES
KW - PHOTOMETRY
KW - REGOLITH
KW - SCATTERING
KW - SPECTROSCOPY
KW - methods: numerical
KW - minor planets, asteroids: individual: Vesta
KW - scattering
KW - techniques: spectroscopic
KW - 115 Astronomy, Space science
U2 - 10.1093/mnras/sty3164
DO - 10.1093/mnras/sty3164
M3 - Article
VL - 483
SP - 1952
EP - 1956
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 2
ER -