Attending: Rick White, Megan Donahue, Niall Gaffney, Mark Dickinson,
Myron Smith, Tim Kimball, Stefano Casertano, Ed Hopkins, Harry Ferguson
[If I've left you out, let me know - Megan]
Discussion of Science Cases
[FASST members: if you would like to be more articulate (or more accurate!) than I have been in my notes do not hesitate to contribute more complete descriptions. These minutes are extracted from my notes and memory. I have generally ascribed some contributions to individuals, but I did not take a full transcript; just a sense of the very interesting discussion. Thank you!]
I would gather multi-wavelength photometry for galaxies - as much as exists, to use to constraing galaxy evolution.
Starting with a catalog of (say) Veron-Cetty quasars, ask:
Density in stars as a function of galactic latitude -> K-band counts,catalog, star-galaxy separation, common photometry.
We talked about HST data in particular. Some obvious product enhancements
include: summed, stacked images, limiting magnitudes in the observation
catalog, more/better image statistics (object counts, sky estimates, etc.)
The first question is almost always: What is available? Some difficulty
arises in where to go from there - the data are not always friendly.
Documentation, primer material should also accompany data. Data ideally
is in a format and a calibration state as close to science-ready (prepared
for analysis beyond calibration) as possible.
Another common theme is finding what tools are out there? What is available
to overlay and align images and contour plots? What are the catalogs available
and what are their characteristics? Which catalogs do I use for photometry/astrometry/morphology?
What are the systematics inherent in the catalogs?
Megan noted three themes in the discussion:
It might not be too crazy to say that nearly all astronomy will use
the NVO or something like it, to some extent: science builds upon the past,
and can't be conducted very efficiently in isolation from it. So every
project from the simplest to the most glorious multi-million dollar projects
will use archival data. We can take the two suggested above, but be conscious
of the needs general to both.
There are some science problems to be aware of:
Next time (June 27):
Review other services: ADASS, ADCCC lists, 2MASS, etc. Seek out useful tools, useful features. Check website.
Next next time (July 4): No meeting.