Vestoids, Vesta, and HEDs
Ғылым және технология
UCLA Meteorite Gallery Lecture Series: April 2022
Title: Vestoids, Vesta, and HEDs
Lecturer: Dr. Thomas Burbine, Mount Holyoke College
Vestoids are small bodies that have reflectance spectra similar to both Vesta and HEDs (howardites, eucrites, and diogenites). Vestoids are found in the Vesta family, throughout the inner asteroid belt, in the middle and outer asteroid belt, and among the near-Earth asteroid population. I have devised formulas for determining the bulk pyroxene mineralogies of HED-like material and have used these formulas to derive the bulk pyroxene compositions of Vestoids and to determine possible relationships between Vestoids and different HED groups. In this talk, I will discuss the spectral properties of Vestoids, their interpreted mineralogies, and their relationships with Vesta.
Join our newsletter by contacting meteorites@ucla.edu to hear about other monthly lectures and events we are hosting!
Пікірлер: 2
Interesting. Question: Would the impactor that launched the Vesta sourced meteorites also be represented in material traceable to that event? Do we have any idea as to it's nature?
@uclameteoritecollectiongal5081
2 жыл бұрын
"Good question! I have never heard that asked before. I would assume that some fraction ,of the impactor would have to be incorporated into Vesta's regolith and therefor into HED meteorites. Most of the impactor is usually assumed to have vaporized. CM chondritic material is commonly found in HEDs and, from Dawn observations, on Vesta's surface. So maybe CM chondritic material is the best guess for the composition of the impactor?" --Dr. Thomas Burbine