DOI: 10.1029/2018JE005561
Scopus记录号: 2-s2.0-85050616779
论文题名: Can Formulas Derived From Pyroxenes and/or HEDs Be Used to Determine the Mineralogies of V-Type Asteroids?
作者: Burbine T.H. ; Buchanan P.C. ; Klima R.L. ; Binzel R.P.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期: 7 起始页码: 1791
结束页码: 1803
语种: 英语
英文关键词: asteroids
; meteorites
; pyroxenes
; reflectance spectra
英文摘要: We compare methods for determining the pyroxene mineralogies of V-type near-Earth asteroids from their reflectance spectra. We evaluate whether band centers derived from the spectra of synthetic pyroxenes can be used to achieve greater analytical accuracy than is achieved through the use of band centers derived from the spectra of basaltic achondrites (howardites, eucrites, diogenites or HEDs). We conclude that band centers derived from the reflectance spectra of synthetic pyroxenes with known mineralogies do not provide useful diagnostic information to derive equations for determining accurate pyroxene compositions of V-type asteroids. Band centers from the reflectance spectra of HEDs with known pyroxene mineralogies can be used to derive equations for determining accurate pyroxene compositions of V-type asteroids. HEDs are physical mixtures of a number of different types of pyroxenes and best simulate the surfaces of V-type asteroids. Formulas using the Band I center appear best for determining asteroid pyroxene mineralogies for V-type asteroids due to the current difficulty in doing accurate temperature corrections to the Band II center. Most of the observed V-type near-Earth asteroids have interpreted mineralogies similar to eucrites or howardites. One of the observed near-Earth asteroids could possibly have a surface mineralogy similar to diogenites. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113646
Appears in Collections: 气候减缓与适应
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作者单位: Department of Astronomy, Mount Holyoke College, South Hadley, MA, United States; Department of Chemistry, Kilgore College, Kilgore, TX, United States; Applied Physics Laboratory, The Johns Hopkins University, Laurel, MD, United States; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Burbine T.H.,Buchanan P.C.,Klima R.L.,et al. Can Formulas Derived From Pyroxenes and/or HEDs Be Used to Determine the Mineralogies of V-Type Asteroids?[J]. Journal of Geophysical Research: Planets,2018-01-01,123(7)