The Science Case for Building a Band 1 Receiver for ALMA

Details The Science Case for Building a Band 1 Receiver for ALMA The Science Case for Building a Band 1 Receiver for ALMA

2009-10-08

arxiv.org/abs/0910.1609v2

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

45 pages, 9 figures

Scientific paper

We present a set of compelling science cases for the 31-45 GHz Band 1 ALMA Receiver. The science ranges from nearby stars to the re-ionization edge of the Universe. Two of the science cases provide additional leverage on the present ALMA Level One Science Goals and are seen as particularly powerful motivations for building the Band 1 Receiver: (1) detailing the evolution of grains in protoplanetary disks, as a complement to the gas kinematics, requires continuum observations out to ~30 GHz (~cm); (2) detecting CO 3 - 2 spectral line emission from Galaxies like the Milky Way during the era of re-ionization, 6.5 < z < 10 also requires Band 1 Receiver coverage.

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