The spectral resolution has allowed the consistent identification of absorption features that have been used to distinguish between classes (Fig. This work will give insight on the reliability of each taxonomic class in grouping bodies with similar mineralogies. The Bus-DeMeo taxonomy benefits from much higher spectral resolution than the Tholen taxonomy as well as a much longer wavelength cutoff since the 12.5 m region was added. Then, they are compared with the 24 asteroid spectral types of the Bus-DeMeo taxonomy to derive the spectral distances of these comets. We are now investigating the possible range of mineral and compositional diversity in each asteroid class. The IRAF (Image Reduction and Analysis Facility) software is used to process the obtained spectra, and to obtain the relative reectance spectra of the six comets. Iron meteorite spectra tend to be grouped into either the X-complex or D-type classes. Ordinary chondrite spectra tend to be classified as S-complex bodies. As expected, we find the HED (howardites, eucrites, diogenites) spectra to be classified primarily as V-types while ureilite spectra fall under a wide variety of asteroid classes that range from C- to S- to X-complex plus K- and Q-types. Spectral classier for Bus- DeMeotaxonomywithalimited spectral range The purpose of the method described below is to associate the spectral observation of a given target with probabilities for Bus-DeMeo (B-DM) taxonomic classes. Approximately 40% of the meteorite spectra had to be visually classified because the Bus-DeMeo classification program produced ambiguous results. All asteroid classes appear to be represented among the meteorite spectra. To test the taxonomy, ~2,000 meteorite reflectance spectra from the RELAB database were categorized using the Bus-DeMeo classification system. However, very little is known about whether the asteroid classes are mineralogically distinct. Asteroids are currently classified by the shapes of their reflectance spectra in the visible and near-infrared wavelength regions using the Bus-DeMeo taxonomy.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |