Extremely Low Thermal Conductivity of Amorphous Ice: Relevance to Comet Evolution (original) (raw)

ADS

;

• Greenberg, J. M. ;
• Yamamoto, T. ;
• Mukai, T.

Abstract

The thermal conductivity of very slowly deposited amorphous ice derived from experimental results is shown to be a factor of 0.0001 to 0.00001 less than hitherto estimated. Using the exceedingly low value of the thermal conductivity of comets deduced from the amorphous ice properties leads to the expectation that internal heating of comets is negligible below the outer several tens of centimeters.

Publication:

The Astrophysical Journal

Pub Date:

April 1992

DOI:

10.1086/186333

Bibcode:

1992ApJ...388L..73K

Keywords:

• Amorphous Materials;
• Comets;
• Ice;
• Planetary Evolution;
• Thermal Conductivity;
• Comet Nuclei;
• Heat Transfer;
• Interstellar Matter;
• Thin Films;
• Water;
• Astrophysics;
• COMETS: GENERAL