In 2005 Hayabusa spacecraft visited asteroid Itokawa, bringing back surface samples to Earth in 2010. Near-Infrared spectra acquired by NIRS and samples analysis confirmed hypothesis made through ground-based observations, in particular the one that sees Itokawa as an LL-chondrite like asteroid processed by space weathering. In this work, we apply spectral indices for olivine detection on NIRS data. In particular, we define the BAR* and relate it to the olivine abundance, by means of calibration on laboratory data.
Deriving global Olivine distribution on Hayabusa’s target (25143) Itokawa using Near-Infrared Spectrometer data / Nardi, L.; Palomba, E.; Longobardo, A.; Galiano, A.; Dirri, F.. - (2017). (Intervento presentato al convegno EPSC2017 tenutosi a Riga).
Deriving global Olivine distribution on Hayabusa’s target (25143) Itokawa using Near-Infrared Spectrometer data
L. Nardi;F. Dirri
2017
Abstract
In 2005 Hayabusa spacecraft visited asteroid Itokawa, bringing back surface samples to Earth in 2010. Near-Infrared spectra acquired by NIRS and samples analysis confirmed hypothesis made through ground-based observations, in particular the one that sees Itokawa as an LL-chondrite like asteroid processed by space weathering. In this work, we apply spectral indices for olivine detection on NIRS data. In particular, we define the BAR* and relate it to the olivine abundance, by means of calibration on laboratory data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
