Planet Formation
Destiny or Chance, Taylor, 2012
- Tzero = 3467 +- 2 MYA earliest crystalline material
- Triton(Neptune) 39K
- Sun 1.4% metallicity ( ~0 to 4% )
- p31 typ galaxy 1e11 stars Milky Way formed stars 10GYA
- p33 Gas clouds H2 100-1000 H/cm3, 1% of galactic volume, 10K, up to 100 LY diam, gas for 1e5 to 1e6 stars
- p34 100 KY cloud collapse to ignition
p35 red dwarf >75% 80xJupiter / Jupiter 150K accretion energy / Brown dwarf 300K
p48 Planetesimal Hypothesis dustygrains > boulders > mountains
- p49 like a spiral storm, not a uniform disk
- Goldilocks problem, too much gas, fall into sun
[7] Roberge & Kamp "Protoplanets and debris disks" in Exoplanets/Seager.2010 p285