Skip to main content

Modification of a proto-lunar disk by hydrodynamic escape of silicate vapor

Abstract

We have estimated a criterion for escape of silicate vapor from the disk formed by a giant impact. Escape from the disk affects the mass distribution and specific angular momentum of the disk. We applied the results to the disk formed by the Moon-forming impact. In the case of a hot (>6000 K) and highly vaporized (>63%) disk, the material outside of the Roche radius escapes. This indicates that the formation of the Moon is influenced by the thermal state of the disk just after the giant impact.

References

  • Benz, W., A. G. W. Cameron, and H. J. Melosh, The origin of the Moon and the single-impact hypothesis III, Icarus, 81, 113–131, 1989.

    Article  Google Scholar 

  • Cameron, A. G. W., The origin of the Moon and the single-impact hypothesis V, Icarus, 126, 126–137, 1997.

    Article  Google Scholar 

  • Cameron, A. G. W. and W. Benz, The origin of the Moon and the single-impact hypothesis IV, Icarus, 92, 204–216, 1991.

    Article  Google Scholar 

  • Canup, R. M. and E. Asphaug, Origin of the Moon in a giant impact near the end of the Earth’s formation, Nature, 412, 708–712, 2001.

    Article  Google Scholar 

  • Hashimoto, A., Evaporation metamorphism in the early solar nebula—evaporation experiments on the melt FeO-MgO-SiO2-CaO-Al2O3 and chemical fractionations of primitive materials, Geochem. J., 17, 111–145, 1983.

    Article  Google Scholar 

  • Ida, S., R. M. Canup, and G. R. Stewart, Lunar accretion from an impact-generated disk, Nature, 389, 353–357, 1997.

    Article  Google Scholar 

  • Machida, R. and Y. Abe, Evolution of the proto-lunar disk: instability of the dust layer and the moon forming material, Lunar Planet. Sci. Conf., XXXIII, Abstract #1690 in CD-ROM, 2002.

  • Parker, E. N., Hydrostatic properties of a coronal atmosphere, in Interplanetary Dynamical Processes, Interscience Publishers, New York, 1963.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Hidenori Genda.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Genda, H., Abe, Y. Modification of a proto-lunar disk by hydrodynamic escape of silicate vapor. Earth Planet Sp 55, 53–57 (2003). https://doi.org/10.1186/BF03352462

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1186/BF03352462

Keywords

  • Central Plane
  • Critical Radius
  • Hydrostatic Equilibrium
  • Disk Material
  • Planetary Surface