Possible evidence for partial differentiation of asteroid Lutetia from Rosetta

Benjamin P. Weiss, Linda Elkins-Tanton, M. Antonietta Barucci, Holger Sierks, Colin Snodgrass, Jean Baptiste Vincent, Simone Marchi, Paul R. Weissman, Martin Pätzold, Ingo Richter, Marcello Fulchignoni, Richard P. Binzel, Rita Schulz

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The petrologic diversity of meteorites demonstrates that planetesimals ranged from unmelted, variably metamorphosed aggregates to fully molten, differentiated bodies. However, partially differentiated bodies have not been unambiguously identified in the asteroid belt. New constraints on the density, composition, and morphology of 21 Lutetia from the Rosetta spacecraft indicate that the asteroid's high bulk density exceeds that of most known chondritic meteorite groups, yet its surface properties resemble those of some carbonaceous and enstatite chondrite groups. This indicates that Lutetia likely experienced early compaction processes like metamorphic sintering. It may have also partially differentiated, forming a metallic core overlain by a primitive chondritic crust.

Original languageEnglish (US)
Pages (from-to)137-146
Number of pages10
JournalPlanetary and Space Science
Volume66
Issue number1
DOIs
StatePublished - Jun 2012
Externally publishedYes

Fingerprint

meteorites
asteroids
asteroid
meteorite
enstatite chondrite
enstatite
carbonaceous chondrites
asteroid belts
protoplanets
planetesimal
carbonaceous chondrite
chondrites
surface properties
bulk density
compaction
crusts
sintering
spacecraft
crust

Keywords

  • Asteroids
  • Chondrites
  • Differentiation
  • Lutetia
  • Metamorphism
  • Planetary evolution
  • Planetesimals
  • Rosetta

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Weiss, B. P., Elkins-Tanton, L., Antonietta Barucci, M., Sierks, H., Snodgrass, C., Vincent, J. B., ... Schulz, R. (2012). Possible evidence for partial differentiation of asteroid Lutetia from Rosetta. Planetary and Space Science, 66(1), 137-146. https://doi.org/10.1016/j.pss.2011.09.012

Possible evidence for partial differentiation of asteroid Lutetia from Rosetta. / Weiss, Benjamin P.; Elkins-Tanton, Linda; Antonietta Barucci, M.; Sierks, Holger; Snodgrass, Colin; Vincent, Jean Baptiste; Marchi, Simone; Weissman, Paul R.; Pätzold, Martin; Richter, Ingo; Fulchignoni, Marcello; Binzel, Richard P.; Schulz, Rita.

In: Planetary and Space Science, Vol. 66, No. 1, 06.2012, p. 137-146.

Research output: Contribution to journalArticle

Weiss, BP, Elkins-Tanton, L, Antonietta Barucci, M, Sierks, H, Snodgrass, C, Vincent, JB, Marchi, S, Weissman, PR, Pätzold, M, Richter, I, Fulchignoni, M, Binzel, RP & Schulz, R 2012, 'Possible evidence for partial differentiation of asteroid Lutetia from Rosetta', Planetary and Space Science, vol. 66, no. 1, pp. 137-146. https://doi.org/10.1016/j.pss.2011.09.012
Weiss, Benjamin P. ; Elkins-Tanton, Linda ; Antonietta Barucci, M. ; Sierks, Holger ; Snodgrass, Colin ; Vincent, Jean Baptiste ; Marchi, Simone ; Weissman, Paul R. ; Pätzold, Martin ; Richter, Ingo ; Fulchignoni, Marcello ; Binzel, Richard P. ; Schulz, Rita. / Possible evidence for partial differentiation of asteroid Lutetia from Rosetta. In: Planetary and Space Science. 2012 ; Vol. 66, No. 1. pp. 137-146.
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