Constraining the cratering chronology of Vesta

被引：37

作者：

O'Brien, David P. ^{[1
]}

Marchi, Simone ^{[2
]}

Morbidelli, Alessandro ^{[3
]}

Bottke, William F. ^{[2
]}

Schenk, Paul M. ^{[4
]}

Russell, Christopher T. ^{[5
]}

Raymond, Carol A. ^{[6
]}

机构：

[1] Planetary Sci Inst, Tucson, AZ 85719 USA

[2] Southwest Res Inst, NASA Lunar Sci Inst, Boulder, CO USA

[3] CNRS, Observ Cote Azur, F-06034 Nice, France

[4] Lunar & Planetary Inst, Houston, TX 77058 USA

[5] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA

[6] CALTECH, Jet Prop Lab, Pasadena, CA USA

来源：

PLANETARY AND SPACE SCIENCE | 2014年 / 103卷

关键词：

Vesta; Asteroids; Impact Cratering; Impact Chronology; LATE HEAVY BOMBARDMENT; MAIN-BELT ASTEROIDS; INNER SOLAR-SYSTEM; LUNAR CATACLYSM; PRIMORDIAL EXCITATION; COLLISIONAL HISTORY; SIZE DISTRIBUTION; PARENT BODY; RB-SR; ORIGIN;

D O I：

10.1016/j.pss.2014.05.013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Vesta has a complex cratering history, with ancient terrains as well as recent large impacts that have led to regional resurfacing. Crater counts can help constrain the relative ages of different units on Vesta's surface, but converting those crater counts to absolute ages requires a chronology function. We present a cratering chronology based on the best current models for the dynamical evolution of asteroid belt, and calibrate it to Vesta using the record of large craters on its surface. While uncertainties remain, our chronology function is broadly consistent with an ancient surface of Vesta as well as other constraints such as the bombardment history of the rest of the inner Solar System and the Ar-Ar age distribution of howardite, eucrite and diogenite (HED) meteorites from Vesta. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：131 / 142

页数：12

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