Thesis Proposal by Cassandra Johnson on January 30th
Space Studies master’s student, Cassandra Johnson, will give her thesis proposal presentation as follows.
When: Thursday, January 30th at 4 p.m.
Where: Ryan Hall, Room 111 (available in person only)
Title: VISIBLE WAVELENGTH PEAK FEATURE UTILIZATION TO CHARACTERIZE MAIN BELT ASTEROIDS WITH RELATION TO ORDINARY CHONDRITES
Abstract: Thesis work toward correlating meteorite spectral data with databases of asteroid spectra from SMASS I, SMASS II and S2O3, which lack the band II feature altogether and/or have their band I feature cut off. Both of these band features show characteristic absorption features for the mafic silicates Olivine and Pyroxene which are used to characterize asteroids from spectrophotometry data. Accurate characterization from curve matching for these databases is lacking since these band features are missing and/or cut off. To potentially resolve this problem, a survey of meteorite spectral data of the peak feature between charge transfer and band I, thus the visible peak feature, may lead to an additional means to utilizing these databases. Since Ordinary Chondrites account for roughly ¾ of meteorite falls, the survey has focused on differentiating characteristic shifts in the visible peak feature between the three types of Ordinary Chondrites (H, L and LL).