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V/14 Estimated astrophysical parameters from uvby (Philip+ 1980)
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catalog.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=V/14
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uvby estimated astrophysical parameters
Philip A.G.D., Egret D.
<Astron. Astrophys. Suppl. Ser. 40, 199 (1980)>
=1980A&AS...40..199P
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ADC_Keywords: Photometry, uvby, beta ; Effective temperatures ;
Keywords: Four-color photometry ; Early-type stars ; Astrophysical parameters
Description:
Observed values of the Stroemgren uvby colors were collected from the
literature. A computer program calculated the reddening for each star.
This value was used to compute the unreddened value of (b-v), c1, and
m1. These were then used to compute [c(1)], [m(1)], and [u-b] for the
star. Except for the H beta index, the observed quantities are not
included.
Introduction:
The stars were divided into groups by spectral types by means of the
bracket quantities. Stars which deviated too greatly from the standard
relations could not be dereddened. These include peculiar stars
and high luminosity stars and are listed in reject.dat. Various
discussions by Crawford were followed to deredden the other stars.
The zero point of the [Fe/H] relation was changed from 0.4 to 0.2 on
the basis of the study by Gustafsson and Nissen (1972A&A....19..261G)
and some corrections were made to the effective temperature scale in
order to fit the new model by Kurucz (1979ApJS...40....1K). Otherwise,
the derivations followed the methods of Philip, Miller, and Relyea
(1976, Dudley Obs. Rep. No. 12, 1).