a science case for 3D data model

[Igor Chilingarian]

Doug,

Sorry, I wasn't clear enough. Our goal is to study the connection between
features in the spatial distribution of stellar population properties:
age/metallicity gradients, distinct cores, etc.; and kinematical features in
velocity fields: discs, 3D dynamical structures, etc; and possibly also with
features in brightness/color maps.

One of the advantages of IFU over long-slit is that you will probably
not miss the kinematical major/minor axes, that may happen for long-slit
observations of early-type galaxies. We study diffuse (dwarf) ellipticals
and sometimes such problems occur.

On Mon, 14 Feb 2005, Doug Tody wrote:

> Igor - What does this have to do with 3D data?  This sounds like something
> which could be done using 1D spectra, possibly extracted from MOS or IFU
> observations.  - Doug
>
One more point: this science case can't be done in the VO right now with the
present Spectral Data Model 0.93beta even for 1D data because we can't
describe the spectral resolution and its variations over the spectral
coordinate properly.

With best regards,
						Igor