Hello all,
I am once again wrestling with sizing DM for the construction proposal, in
particular on the query/community access side. I am addressing this email
back to the Data Products Working Group, which has the responsibility for
expressing the use cases in this area.
I have cut and pasted the current section of the DM FRS in this area. I
would envision one representative query/use case for each item in this list,
along with an estimate of how often that query will be requested and the
content/size of the dataset returned. We badly need this information to
have a model for the query processing sizing and for impact on the database
schema. To date, we have been using various pre-cursor models (e.g. SDSS)
and I am not satisfied that any of these are close corollaries.
"1.1.1.1 Community Science Products
While it is impossible to describe all the uses to which LSST data products
might be applied and all possible derived data products, we have created a
representative set of scenarios that would be supported by LSST, either
directly with LSST-produced data products, or by the community, deriving
them from LSST data products. LSST will provide for these scenarios by
means of data interfaces and query and search tools. The details of these
scenarios are available as part of the UML model. For present purposes, we
merely give an indication of the types of astronomy involved:
· Resolved stellar populations
o Pulsating and eclipsing
o CMDs
o Nova
o Luminosity functions
o Planetary transits
· Low-Z universe
o Novae and supernovae
o Groups and clusters of galaxies
o Low-Z large scale structure
o AGNs
· Dark Energy/Dark Matter
o Weak lensing
o Photo-Zs
· Transient Universe
o GRBs
o SNe, Novae and orphan GRBS
o Micro-lensing
· Solar System
o KBOs
o MBOs
o NEOs
o Comets
· Milky Way Map
o Deep luminosity functions
o Streams and tidal tails
o Proper motions
o Parallax
o Deep CMDs
o ISM and reddening studies"
Following up on a conversation I had with Phil Pinto, he has suggested we
enlist the aid of the NOAO TAC panel chairs to flesh out the queries/use
cases for community science the next time they meet in Tucson. I am also
interested in your reaction to this idea. Thanks!
Jeff
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