Photometry and SED models at Nara

[Jonathan McDowell]

Mireille and Jesus,
 I have been asked to talk about SED data model issues in the
SED session on Wednesday.   
 I've put together drafts of Photometry and SED data models
from my point of view (but with an attempt to incorporate the
functionality of the ESAC approach) which I have posted at
http://www.ivoa.net/cgi-bin/twiki/bin/view/IVOA/DataModel
and
http://hea-www.harvard.edu/~jcm/vo/docs/index.html

 I've had some comments from Doug Tody and Arnold already,
but have not yet incorporated them.

 I hope these documents will contribute to a useful starting
point for our discussions. I look forward to seeing everyone
next week!
   Jonathan

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