IVOA DM Work Package : Units description and usage

!!! Work in progress : Site under re construction !!!

• lead Anita Richards

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Goal

This workpage is meant to record the general practice in manipulating units for astronomical data and define a simple way to homogeneise their representation within VO services

Charter

• • poll the community to see how units are defined , used , and coded in archives and services

Results and Feedback

• To come

Working Documents

• Jcm note about units and UCD : ????
• Some documents to read for starting:
  • a few references extracted from the VOTable document (section 9 References):
    • http://vizier.u-strasbg.fr/doc/catstd-3.2.htx
    • Section 4 in Greisen and Calabretta 2002, A&A 395, 1061;
    • IAU Recommendations concerning Units from the IAU Style Manual by G.A. Wilkins (1989) available at http://www.iau.org/Units.234.0.html

More documentation

• see article at : votable-1x.html
• check units in VOSpec, SpecView?

Interactions with other WG efforts

• IVOA VO Query Langage
  
  

Requirements from other groups

• in

• out

Conclusions

[Under construction...]

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