Preflight 2: Local Neighborhood Stellar Abundances

• Source: Bensby, Feltzing, & Oey (2014)
• alpha elements vs iron
• iron peak elements vs iron
• abundances in Solar "twins"
• age-metallicity relation

Cross Sections and Reaction Rates

• cross section
• thermonuclear rates
• astrophysical S-factor
• Example: ³He(a,g)⁷Be

Nuclear Astrophysics Experiments

• Argonne, Illinois!
• Michigan State, East Lansing: animation of beam
• Notre Dame
• Texas A & M
• TRIUMF, Vancouver, Canada:
  view inside the cyclotron
• RIKEN, Japan
• LUNA, Gran Sasso, Italy
• CERN: n_TOF, ISOLDE; Geneva Switzerland

Cosmology

Where are the Galaxies: Structure of the Universe

• cosmological principle: homogeneous & isotropic
• actual data: 2dF Galaxy Redshift Survey
  • survey geometry
  • results

Galaxy Motion Relative to Us

• Hubble's law: orignal paper, modern update
• Hubble motion: artist's conception

The Expansion of the Universe

• demanded by homogeneity and isotropy
• scale factor
• raisin cake analogy
  balloon analogy