The influence of supernovae and passing stars on comets in the Oort cloud

Details The influence of supernovae and passing stars on comets in the Oort cloud The influence of supernovae and passing stars on comets in the Oort cloud

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.332..407s&link_type=abstract

Nature (ISSN 0028-0836), vol. 332, March 31, 1988, p. 407-411. NASA-supported research.

Physics

33

Comets, Oort Cloud, Radiant Heating, Stellar Radiation, Supernovae, B Stars, Novae, O Stars, Space Density, Star Distribution

Scientific paper

It is demonstrated here that the passage of luminous stars through the Oort Cloud over the age of the solar system will subject all comets to heating episodes up to at least 16 K, and a sizeable fraction to 30 K. Stochastic supernovae have even more striking effects during monthlong events; conservative estimates of the supernovae are in the Galactic disk suggest that most comets have been heated to 45 K, and a fraction to about 60 K. These results imply that comets are not fully pristine relics of solar system formation.

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