Possible influence of comets on the chemical evolution of the galaxy

Details Possible influence of comets on the chemical evolution of the galaxy Possible influence of comets on the chemical evolution of the galaxy

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..31...31t&link_type=abstract

Astrophysics and Space Science, vol. 31, Nov. 1974, p. 31-35.

Astronomy and Astrophysics

Astrophysics

21

Abundance, Comets, Galactic Evolution, Stellar Evolution, Astronomical Models, Chemical Composition, Condensates, Galactic Structure, Milky Way Galaxy, Nebulae, Solar System

Scientific paper

It has been suggested by Cameron (1973) that a cloud of comets containing a mass of condensable elements, comparable to the mass of such elements in the sun, formed on the outskirts of the solar system. If the formation of such comet clouds is a general feature of star formation, they constitute a significant sink of elements heavier than helium. It is shown here that this process provides a possible explanation for the very slow rate at which the mean metal abundance of disk stars has increased during the lifetime of the Galaxy.

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