The Feinstein photometric system
Basic Reference
Feinstein A. 1974, MNRAS 169, 171
Abstract
A description of the results obtained with photoelectric measures through
interference filters of the Balmer lines Halpha, Hbeta and Hgamma are
presented. Two hundred and ninety-eight objects are listed, including 92
normal stars employed as standards, 133 Be, 41 early B, 17 metallic-line,
nine helium-weak, one cepheid and five miscellaneous stars. Three satellites
of Jupiter and one of Saturn were also measured to infer the same data for
the Sun.
The early-type emission and non-emission stars were clearly separated from
a comparison of the alpha and beta indices. It was found that about 40 per
cent of the Be stars display changes in the index from a comparison with
older measures obtained by Mendoza or Crawford.
It is suggested that an estimate of the emission in Be stars is available
through comparison of alpha and beta indices.
Content
Access to the data and references
Asiago Database on Photometric System (ADPS)
Indices and Parameters
alpha, beta, gamma
Filters
Photomultiplier
RCA 1P21
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commentsto epaunzen@physics.muni.cz
epaunzen@physics.muni.cz
Last update: 13 September 2002
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