The uvby photometric system

Basic References

Strömgren B. 1956, Vistas in Astron. 2, 1336 (Abstract)

Crawford D.L., Mander J. 1966, Astron. J. 71, 114

Content

572 references

66135 stars

Status

Up-to-date to mid 2002

Access to the data and references

Form to query the uvby catalogue

Form to query the bibliographic reference file

Asiago Database on Photometric System (ADPS)

I. Census parameters for 167 photometric system

II. Band and reddening parameters

Indices and Parameters

V, b-y, m1, c1, beta

m1 = (v - b) - (b - y)

c1 = (u - v) - (v - b)

Filters

Filter	Central wavelength [Å]	Width[Å]	Remarks
u	3500	300
v	4110	190
b	4670	180
y	5470	230
beta narrow	4858	29	(Kitt Peak no 9)
beta wide	4850	129	(Kitt Peak no 10)

Transmission curves

Photomultiplier

Calibrations

Calibrations are described in several papers.

Problems

In the course of a systematic comparison of photometric data, a number of problems have been found, but could not be solved. Generally the data associated with a star identification are not in agreement with those from other systems, usually the UBV, Geneva and Walraven systems.

Errata

A few printing errors have been found in tables.