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IVOA Documents

IVOA Photometry Data Model
Version 1.0

IVOA Working Draft 13 October 2011

Interest/Working Group:
Jesus Salgado Carlos Rodrigo Pedro Osuna Deborah Baines Mireille Louys Evanthia Hatziminaoglou Jonathan McDowell Mark Allen Sebastien Derriere
Jesus Salgado Pedro Osuna


The Photometry Data Model (PhotDM) standard describes photometry filters, photometric systems, magnitude systems, zero points and its interrelation with the other IVOA data models through a simple data model. Particular attention is given necessarily to optical photometry where specifications of magnitude systems and photometric zero points are required to convert photometric measurements into physical flux density units. PhotDM is related to other IVOA Data models (Spectrum DM, Characterization DM, Observation and Provenance DM), and is intended to provide photometry metadata for data that would be accessed via the IVOA Data Access Protocols such as SSAP (Simple Spectra Access Protocol) or TAP (Table Access Protocol). As with most of the VO Data Models, PhotDM makes use of STC, Utypes, Units and UCDs. PhotDM will be serializable with a VOTable.

Status of this document

This is an IVOA Working Draft for review by IVOA members and other interested parties.
It is a draft document and may be updated, replaced, or obsoleted by other documents at any time.It is inappropriate to use IVOA Working Drafts as reference materials or to cite them as other than "work in progress".

Available formats: PDF, DOC

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