Summary of chop-nod analysis telecon of August 26, 2009

Hiroko, John, Giles, Lero

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Lero's analysis of M82:

- we discussed Lero's and John's e-mails to sharp-software concerning the 
issue of our possible detection of synchrotron emission from M82.  (see 
e-mails of July 28th and July 30th and note typo in the latter that was 
corrected a few days later).  We reviewed the arguments in the two e-mails 
and agreed that the polarization we are detecting can't have much 
contribution from synchrotron.

- Lero thinks that perhaps 40% of the 350 micron flux at the peak of the 
cloud could be due to spectral line contamination.  This is an interesting 
issue.  Giles notes that spectral line polarization should be small, but 
perhaps we should ask Martin.

- Lero notes that the regions where we see 18% polarization have strong 
winds and are low-opacity regions.  Perhaps there is a connection.

- we agreed that we should continue to look into the issue of whether we 
believe our errors on I.

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Hiroko's analysis of IRAS 20126:

- We discussed the Aug. 6 memo by Hiroko (last in a series of four 
summer-09 memos by her) and we agreed that the last unresolved issue has 
been dealt with successfully.  We now have a map we believe to its stated 
confidence level (two-sigma).  There was some discussion of flagging some 
vectors as having more significance than others (e.g. 3-sigma vs. 
2-sigma).

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