[daip] question about MOMNT

Doug Ratay doug at astro.ufl.edu
Tue Sep 17 17:06:52 EDT 2002


Hi.  I have a question about the second moment calculation in the MOMNT 
task in aips.  I recently calculated the second moment of a HI cube, and 
found that the peaks in the velocity dispersion corresponded with the 
peaks in the HI distribution.  This could be physical and reflective of 
the real data, but I wanted to make sure that AIPS actually divides out 
the sum of the brightness temperatures.  Or is that something I have to do 
by hand later?  If there is a different equation that AIPS uses for the 
second moment from the standard statistics definition, is that listed 
somewhere.  Thanks alot.  If there is any other info that you need from 
me, please let me know.
					Doug Ratay
					University of Florida





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