• Corpus ID: 118379879

The Science Cases for Building a Band 1 Receiver Suite for ALMA

  title={The Science Cases for Building a Band 1 Receiver Suite for ALMA},
  author={James Di Francesco and Doug Johnstone and Brenda C. Matthews and Norbert Bartel and Leonardo Bronfman and Simon Casassus and Shadi Chitsazzadeh and Maria R. Cunningham and G. Duch{\^e}ne and Antonio S. Hales and Martin Houde and Daisuke Iono and Patrick M. Koch and R. Kothes and Shih-Ping Lai and S.-Y. Liu and Brian S. Mason and Thomas J. Maccarone and Gerald H. Moriarty Schieven and A. M. M. Scaife and Douglas Scott and H. Shang and Shigehisa Takakuwa and Jeff Wagg and Alwyn Wootten and Farah Yusef-Zadeh},
  journal={arXiv: Instrumentation and Methods for Astrophysics},
We present the various science cases for building Band 1 receivers as part of ALMA's ongoing Development Program. We describe the new frequency range for Band 1 of 35-52 GHz, a range chosen to maximize the receiver suite's scientific impact. We first describe two key science drivers: 1) the evolution of grains in protoplanetary disks and debris disks, and 2) molecular gas in galaxies during the era of re-ionization. Studies of these topics with Band 1 receivers will significantly expand ALMA's… 
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