Spectral alteration effects in chondritic gas-rich breccias - Implications for S-Class and Q-Class asteroidsReflection spectra were obtained from sawed or freshly broken surfaces of gas-rich matrix regions in a number of ordinary chondrites (Dubrovnik, Cangas de Onis, Olivenza, and Dimmitt) which are believed to represent lithified portions of asteroid regoliths that were once directly exposed to space, with the purpose of relating these chondrites to Class S asteroids. However, the observations did not detect curved red continuum characteristic for Class S asteroid spectra, suggesting that it is unlikely for any well-observed Class S asteroid to be a source of ordinary chondrites. It is suggested that the newly discovered spectral class 'Q', of which asteroid 1982 Apollo is the prototype, provides a viable alternative of a parent body.
Document ID
19890023527
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bell, Jeffrey F. (Hawaii, University Honolulu, United States)
Keil, Klaus (New Mexico, University Albuquerque, United States)