Science

• High redshift molecular lines:
  • ground state lines: HCN, HCO+ etc.
  • CO 1-0 ( 1.7 < z < 2.8)
  • CO 2-1 ( 4.3 < z < 6.6)
• High redshift dust emission
• Galactic molecular lines, i.e., SiO, CCS, SO (paramagnetic), HC3N
• Anomalous dust emission (rotating grains?)
• Dust - penetrate high opacity of accretion disks, other extreme optical depth objects
• compact objects - VLBA: ALMA would provide an important southern extension with large collecting area.