BrownDwarf Registry Requirements - Science content

ResourceMetadata

Where values are strings, I have stated the options if specific values are needed. Otherwise, I have just given the value type, and the query will select values within a specified range.

content "format" value = "ascii", = "VOTable"
content "tablenrows" value = decimal
content "tablesize" value = decimal
content "type" value = "catalogue", = "survey"
content "subjectkeyword" value = "Null", = "Milky Way", = "Stars"

coverage wavelengthrange value = "ir", value = "optical"
coverage wavelengthshort value = decimal
coverage wavelengthlong value = decimal
coverage "decmin" value = decimal
coverage "decmax" value = decimal
coverage "ramin" value = decimal
coverage "ramax" value = decimal
coverage "startdate" value = decimal
coverage "enddate" value = decimal
coverage "sourcedensity" value = decimal

dataquality "astrometryerror" value = decimal
dataquality "photometryerror" value = decimal
dataquality "timingerror" value = decimal

Additional metadata if nDim data as well as catalogues are used:
coverage "angularfraction" value = decimal
coverage "format" value = "FITS"
resolution "angularresolution" value = decimal
resolution "spectralresolution" value = decimal
"type" value = "archive"
"wavelengthrange" value = "uv", value = "mm-wave"

UCDs

Note these are not 'proper' UCDs as we do not yet have a final convention, but show the sort of things which need UCDs. I am not differentiating between UCDs in the header e.g. to describe a single overall positional uncertainty and UCDs for each column.

I hope we adopt some sort of modular or atomic UCD structure, and a capacity to cross-reference columns, so that UCDs below which are not single words would be built up in a logical way but we do not have to have e.g. PHOT_ABC where ABC is every possible frequency or filter. The exact order of conditional queries (e.g. look for Optical first? or Photometry first?) depends on what UCD convention we adopt. There may be more than one error per quantity, e.g. systematic errors in the catalogue header plus random errors per entry.

StellarCluster
Star
Membership of StellarCluster
AngularPosition (RA, Dec)
AngularPosition Error (RA, Dec)
ID
Epoch
Epoch Error
ProperMotion
ProperMotion Error
Optical Colour, Photometry (I_Band, R_Band, numerical band spec.))
IR Colour, Photometry (K_Band, numerical band spec.))
Photometry FilterBandpass (for the above, e.g. Cousins, Johnson)
Photometry Error (per band)
BrownDwarf
BrownDwarf Probability
Distance
Distance Error
Parallax
Parallax Error
DistanceModulus
DistanceModulus Error
DopplerVelocity
DopplerVelocity Error
ChemicalAbundance (Li, CH4 etc.)

Additional UCDs describing nDim image and spectral DataSets, if used.

-- AnitaRichards - 24 Apr 2003