Datatype: uvbym

This datatype collects the average values computed at our Institute of Astronomy for the Strömgren uvby system. These data are only a selection of stars in open clusters from the complete catalogue produced by B. Hauck and M. Mermilliod (CDS II/158A).

Again the mean ß data are collected separately in the database. The corresponding datatype is beta mean.

Record structure

No:Star number
Ref:Number of data sources
V:V magnitude
b-y:b-y mean index
m1:m1 mean parameter
c1:c1 mean parameter

Database access

List of clusters

Query the references


Jean-Claude.Mermilliod@obs.unige.ch
Last Update: 17 February 1998