Accession Number : AD0649228

Title :   THE MASS OF THE SUN IN THE ERA OF PLANET FORMATION,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Krat,V.

Report Date : JUN 1960

Pagination or Media Count : 8

Abstract : The mass of the sun in the initial moment of its existence is calculated to be 5.5 times the contemporary mass, on the basis of the evaporation of the nebula up to Jupiter's formation zone. It is assumed that the radius (R) of the nebula-evaporation zone is 5.0 astr. units. At that time the luminosity (L) was 912 times the present luminosity (Lo). Earth-size planets began to form only after L was but a few times greater than Lo. The final mass of the captured dust, from which the earth-sized planets were eventually formed was about 10 to the 27th power g, which comprised about 10% of the mass of the planets. The sun's mass during the era of the formation of the earth-sized planets is calculated to be 2.2 times the contemporary mass, assuming R = 0.35.

Descriptors :   (*SOLAR SYSTEM, CONDENSATION), (*SUN, CONDENSATION), (*PLANETS, CONDENSATION), NEBULAE, GRAVITY, GASES, DUST, JUPITER(PLANET), CELESTIAL MECHANICS, CHEMICAL ELEMENTS, SOLAR RADIATION

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE