Title  Mapping the surfaces of large icy bodies
Pi     B. Butler
Time   104 hrs

Title: Mapping the surfaces of large icy bodies
Authors: B. Butler

Abstract: ALMA will be able to map with unprecedented accuracy
   and fidelity the millimeter wavelength emission from the solid
   surfaces of the larger icy bodies in the solar system, including
   jovian, saturnian, uranian and neptunian satellites, Pluto &
   Charon, and the larger of the TNOs.  Such maps will provide us 
   with information on the thermal and electrical properties of the 
   surface and near-surface, as well as the surface texture - which
   may hold clues to composition - see, e.g., Muhleman & Berge 
   1991; Jewitt 1994; Lellouch et al. 2000.

                                                                                contin        line        poln
name          RA&DEC   m T SD CA sub resn size freq   line   dfreq      BW    fd     rms    fd    rms   fd    rms   time
------------ --------  - - -- -- --- ---- ---- ----  ------ --------  -----  ------------  -----------  ---------  ------
icy sat/TNO  ecliptic  Y Y N  N   N   .1  .1-1  345    N/A    N/A     8 GHz  50-100 K 1 K     N/A       1 K  .1 K  40x2 h
Pluto/Charon ecliptic  Y Y N  N   N  .01   .1   345    N/A    N/A     8 GHz   40 K   1 K      N/A       1 K  .1 K  4x6 h
total                                                                                                              104 h


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See program 4.1.1 for general comments Butler and Gurwell

Review Mark Gurwell: OK.
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Review v2.0:
 
Review of 4.2.1-4.2.8 (no DRSP 2.0 updates received)

These projects still remain scientifically valid. Do the additional
ALMA bands offer something new (e.g., for projects 4.2.4, 4.2.5)? The
integration times are probably still ok eventhough the number of
antennas has gone from 64 to 50 - or at least close enough.

Several of these projects focus on objects larger than the ALMA
primary beam, and mosaicing is needed. Here the ACA and also the ACA
in crosscorrelation with the ALMA-12m antennas may be beneficial.