for quantities used in simulations (cosmological, stellar, ...). The aim is to help the integration of theoretical data inside the VO.
This page is specific for theoretical data UCDs, for more general requirements regarding
page.
The final goal is provide a set of UCDs to be submitted via the RFM (Request For Modification) web form and then, if approved, to be added to the Standard UCD1+ Common Vocabulary.
. Please, before adding your suggestions, have a look at these IVOA documents:
Hereafter you can find a table where you can add your UCDs and comment those already suggested by other people interested in this field. If some ideas seem not to fit into the table schema at page bottom there's also a part devoted to other comments and suggestions.
proposed UCD |
Description |
Remarks |
Comments |
... |
...and so on |
propose a way to define objects interesting in simulation but not only in simulations, like gas, stars, galaxies. These UCDs can be useful as S words to specify to what the quantities are referred to, i.e. phys.mass of what? a star? the halo of a galaxy? |
|
src.omega.baryon |
baryon content density parameter |
|
just a few examples of omegas (add all the others you need) |
??? |
code used for the simulation |
|
|
src.omega.lambda |
cosmological constant related density parameter |
|
just a few examples of omegas (add all the others you need) |
src.cosmologicalmodel? |
cosmological model used |
Lambda Cold Dark Matter, other |
|
??? |
dark matter related |
propose a way to define objects interesting in simulation but not only in simulations, like gas, stars, galaxies. These UCDs can be useful as S words to specify to what the quantities are referred to, i.e. phys.mass of what? a star? the halo of a galaxy? |
object.dm? |
src.omega |
density parameters of the universe |
to be used as root for all omegas used or alone to indicate the the global density parameter |
|
phys.temperature.emissionweighted |
emission-weighted temperature |
|
|
??? |
gas or gas related |
propose a way to define objects interesting in simulation but not only in simulations, like gas, stars, galaxies. These UCDs can be useful as S words to specify to what the quantities are referred to, i.e. phys.mass of what? a star? the halo of a galaxy? |
maybe using object.gas? |
src.hubble0 |
Hubble constant, H0, equals the Hubble parameter at z=0 |
|
These 2 UCDs can maybe be simplified into one |
src.hubble |
hubble paramater, H |
|
These 2 UCDs can maybe be simplified into one |
src.sigma8 |
initial spectrum normalization parameter |
|
|
src.boxsize |
linear dimension of the cosmological box simultaed |
|
|
phys.temperature.massweighted |
mass-weighted temperature |
|
|
src.omega.matter |
matter density parameter |
|
just a few examples of omegas (add all the others you need) |
phys.radius.rhocritic.NNN |
NNN times the rhocritic-radius |
extensions to the critical radius concept, with NNN usually 200, 500, 2500 |
Another way to define such relations could be use a src.rhocritic word and then the compounds like phys.radius;src.rhocritic. This ucd can also be used to specify where some quantities are evaluated, i.e. phys.temperature.speclike;phys.radius.rhocritic |
src.omega.radiation |
radiation related density parameter |
|
just a few examples of omegas (add all the others you need) |
phys.radius.rhocritic |
radius (of an object, say a cluster of galaxies) where the density equals the critical density of the universe |
the critical density is used as a comparing term to other densities, also used as a reference for the above mentioned density parameters. Usually one describes radial distances inside clusters, for example, as N times the radius where the density equals the critical density |
Another way to define such relations could be use a src.rhocritic word and then the compounds like phys.radius;src.rhocritic. This ucd can also be used to specify where some quantities are evaluated, i.e. phys.temperature.speclike;phys.radius.rhocritic |
phys.temperature.speclike |
spectrum-like temperature |
|
|
??? |
stars or stellar objects related |
propose a way to define objects interesting in simulation but not only in simulations, like gas, stars, galaxies. These UCDs can be useful as S words to specify to what the quantities are referred to, i.e. phys.mass of what? a star? the halo of a galaxy? |
object.stellar? |
src.omega.stellar |
stellar content density parameter |
|
just a few examples of omegas (add all the others you need) |