The elemental composition of asteroid 433 eros: results of the NEAR-shoemaker X-ray spectrometer |
| |
| Authors: | Trombka Squyres Bruckner Boynton Reedy McCoy Gorenstein Evans Arnold Starr Nittler Murphy Mikheeva McNutt McClanahan McCartney Goldsten Gold Floyd Clark Burbine Bhangoo Bailey Petaev |
| |
| Institution: | Goddard Space Flight Center, Code 691, Greenbelt, MD 20771, USA. Space Sciences Building, Cornell University, Ithaca, NY 14853, USA. Max-Planck-Institut fur Chemie, Postfach 3060, D-55020 Mainz, Germany. Department of Planetary Science, Spac. |
| |
| Abstract: | We report major element composition ratios for regions of the asteroid 433 Eros imaged during two solar flares and quiet sun conditions during the period of May to July 2000. Low aluminum abundances for all regions argue against global differentiation of Eros. Magnesium/silicon, aluminum/silicon, calcium/silicon, and iron/silicon ratios are best interpreted as a relatively primitive, chondritic composition. Marked depletions in sulfur and possible aluminum and calcium depletions, relative to ordinary chondrites, may represent signatures of limited partial melting or impact volatilization. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
