The elemental composition of asteroid 433 eros: results of the NEAR-shoemaker X-ray spectrometer
The elemental composition of asteroid 433 eros: results of the NEAR-shoemaker X-ray spectrometer
复制标题
小行星 433 eros 的元素组成：NEAR-shoemaker X 射线光谱仪的结果
作者：
J. Trombka;S. Squyres;J. Brückner;W. Boynton;R. Reedy;T. Mccoy;P. Gorenstein;L. Evans;J. Arnold;R. Starr;L. Nittler;M. Murphy;I. Mikheeva;R. McNutt;T. McClanahan;E. Mccartney;J. Goldsten;R. Gold;S. Floyd;P. Clark;T. Burbine;J. Bhangoo;S. Bailey;M. Petaev
我们报告的主要元素组成比的小行星433爱神星成像期间，两个太阳耀斑和安静的太阳条件在2000年5月至7月期间的区域。低铝丰度的所有地区反对全球分化的爱神。镁/硅、铝/硅、钙/硅和铁/硅的比例最好解释为相对原始的结晶组成。相对于普通碳酸盐而言，硫的显著消耗以及可能的铝和钙消耗可能代表有限的部分熔融或撞击挥发的特征。
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.