Vesta's Shape and Morphology

被引：188

作者：

Jaumann, R. ^{[1
,2
]}

Williams, D. A. ^{[3
]}

Buczkowski, D. L. ^{[4
]}

Yingst, R. A. ^{[5
]}

Preusker, F. ^{[1
]}

Hiesinger, H. ^{[6
]}

Schmedemann, N. ^{[2
]}

Kneissl, T. ^{[2
]}

Vincent, J. B. ^{[7
]}

Blewett, D. T. ^{[4
]}

Buratti, B. J. ^{[8
]}

Carsenty, U. ^{[1
]}

Denevi, B. W. ^{[4
]}

De Sanctis, M. C. ^{[9
]}

Garry, W. B. ^{[5
]}

Keller, H. U. ^{[10
]}

Kersten, E. ^{[1
]}

Krohn, K. ^{[1
]}

Li, J. -Y. ^{[11
]}

Marchi, S. ^{[12
]}

Matz, K. D. ^{[1
]}

McCord, T. B. ^{[13
]}

McSween, H. Y. ^{[14
]}

Mest, S. C. ^{[5
]}

Mittlefehldt, D. W. ^{[15
]}

Mottola, S. ^{[1
]}

Nathues, A. ^{[7
]}

Neukum, G. ^{[2
]}

O'Brien, D. P. ^{[5
]}

Pieters, C. M. ^{[16
]}

Prettyman, T. H. ^{[5
]}

Raymond, C. A. ^{[8
]}

Roatsch, T. ^{[1
]}

Russell, C. T. ^{[17
]}

Schenk, P. ^{[18
]}

Schmidt, B. E. ^{[19
]}

Scholten, F. ^{[1
]}

Stephan, K. ^{[1
]}

Sykes, M. V. ^{[5
]}

Tricarico, P. ^{[5
]}

Wagner, R. ^{[1
]}

Zuber, M. T. ^{[20
]}

Sierks, H. ^{[7
]}

机构：

[1] German Aerosp Ctr DLR, Inst Planetary Res, Berlin, Germany

[2] Free Univ Berlin, Berlin, Germany

[3] Arizona State Univ, Tempe, AZ 85287 USA

[4] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

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

[6] Univ Munster, D-4400 Munster, Germany

[7] Max Planck Inst Solar Syst Res MPS, Katlenburg Lindau, Germany

[8] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[9] Ist Nazl Astrofis INAF, Ist Astrofis & Planetol Spaziali, Rome, Italy

[10] Tech Univ Carolo Wilhelmina Braunschweig, Braunschweig, Germany

[11] Univ Maryland, College Pk, MD 20742 USA

[12] NASA, Lunar Sci Inst, Boulder, CO 80309 USA

[13] Bear Fight Inst, Winthrop, WA 98862 USA

[14] Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA

[15] NASA, Lyndon B Johnson Space Ctr, Astromat Res Off, Houston, TX 77058 USA

[16] Brown Univ, Planetary Geosci Dept, Providence, RI 02912 USA

[17] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA

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

[19] Univ Texas Austin, Inst Geophys, Austin, TX 78712 USA

[20] MIT, Cambridge, MA 02139 USA

来源：

SCIENCE | 2012年 / 336卷 / 6082期

关键词：

PONDED DEPOSITS; TOPOGRAPHY; EVOLUTION; ORIGIN; DAWN;

D O I：

10.1126/science.1219122

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Vesta's surface is characterized by abundant impact craters, some with preserved ejecta blankets, large troughs extending around the equatorial region, enigmatic dark material, and widespread mass wasting, but as yet an absence of volcanic features. Abundant steep slopes indicate that impact-generated surface regolith is underlain by bedrock. Dawn observations confirm the large impact basin (Rheasilvia) at Vesta's south pole and reveal evidence for an earlier, underlying large basin (Veneneia). Vesta's geology displays morphological features characteristic of the Moon and terrestrial planets as well as those of other asteroids, underscoring Vesta's unique role as a transitional solar system body.

引用

页码：687 / 690

页数：4

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