ASTR 151 Lecture Notes - Lecture 6: Kuiper Belt, Gas Giant, Solar System
Document Summary
Ss(ecliptic) and reside primarily at large: there is an apparent period of (cid:862)late heav(cid:455) bo(cid:373)bard(cid:373)e(cid:374)t(cid:863) of (cid:373)aterial shortl(cid:455) after for(cid:373)atio(cid:374) of planets [a later period of ss evolution to present structure]. Nebular theory: start with a giant cloud of gas and dust. In the higher density solar nebula, the dust in the disk can collect into the planets and other ss bodies. Evidence suggests that nearly all the dust inherited from the nebular cloud of gas and dust in vaporized (turned into a gas) in the collapse to a disk process. Not much solid material, so how do we get it back, and can that process. Inner: middle: moderate 273k around 3-5au away or so. Outer: cold 100-273k further out to about 30au. Far outer: very cold <100k in the outer regions >30au. Middle ss metal rock organics and high t ices. Outer ss metal rock organics high and low ices.
