II/27 Photoelectric measurements in UcBV system (Nicolet 1975)
Catalogue of Photoelectric Photometric Measurements in the UcBV System
Nicolet B.
<Astron. Astrophys. Suppl. Ser. 22, 239 (1975)>
=1975A&AS...22..239N 1975A&AS...22..239N
ADC_Keywords: Photometry, UcBV ; Colors
Description:
All measurements in the literature on the Cape photometric system as
of early 1975 have been compiled. The catalog includes measurements
from 38 publications as well as 469 unpublished measurements forwarded
by Dr. A. W. J. Cousins.
Introduction:
The method and computer program described by Hauck (1973) and used by
Lindemann and Hauck (1973) was used for the ubvyβ system. The data
of Cousins and Stoy (1963) were used as the standard but no systematic
differences were found. As the standard error was sufficiently small,
each publication was given the same weight. However, Johnson et al
(1966) have signaled a slight divergence between their measurements in
V and B-V and those given in the Cape system. Account was taken of
this in the calculation.
The probable error in each magnitude and color is less than 0.01mag.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
means.dat 40 7141 Weighted Means of UcBV data
measures.dat 80 8080 Measurements compiled in the UcBV system
refs.dat 80 38 References of observations
codes.txt 80 245 Numbering System used for star designation
xindex.dat 29 546 Cross Index of star designations (HD, BD)
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Byte-by-byte Description of file: means.dat
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Bytes Format Units Label Explanations
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1- 11 F11.8 --- ID Coded star designation (see file "codes.txt")
12 A1 --- n_ID [DV] Double of Variable star
15- 19 F5.2 mag Vmag ? V-band magnitude
22- 26 F5.2 --- B-V ? B-V color index
29- 33 F5.2 --- U-Bc ? (U-B)c color index in Cape system
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Byte-by-byte Description of file: measures.dat
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Bytes Format Units Label Explanations
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1- 11 F11.8 --- ID Coded star designation (see file "codes.txt")
12 A1 --- n_ID [DV] Double of Variable star
15- 19 F5.2 mag Vmag ? V-band magnitude
22- 26 F5.2 mag B-V ? B-V color index
29- 33 F5.2 mag U-Bc ? (U-B)c color index in Cape system
36 A1 --- n_N [S*/] Meaning of "N" (1)
37- 39 I3 --- N [1/60]? Number of observations (1)
76- 78 A3 --- --- [02] number assigned to UcBV system
79- 80 I2 --- ref Reference number (see file "refs.dat")
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Note (1): the prefix indicates:
"*" = at least the number of observations specified
"/" = unknown number of observations
"S" = the star is a standard star for a publication
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref [1/38] Reference number
4- 80 A77 --- Text Reference od the paper used in "measures.dat"
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Byte-by-byte Description of file: xindex.dat
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Bytes Format Units Label Explanations
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2- 12 F11.8 --- ID Coded star designation (see file "codes.txt")
14- 19 I6 --- HD ? HD number
21- 29 F9.5 --- DM ? Durchmusterung identification
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References:
Blanco V.M., Demers S., Douglass G.G. and FitzGerald P.M. 1970,
Pub. U.S. Naval Obs., 2nd series. 21.
Cousins A.W.J. and Stoy R.H. 1963, Roy. Obs. Bull. no. 64.
Cousins A.W.J., Lake R. and Stoy R.H. 1966, Roy. Obs. Bull. no. 121.
Hauck B. 1973, in Fehrenbach Ch. and Westerlund B.E. (eds.), Spectral
Classification and Multicolour Photometry, p. 285, Reidel D.,
Dordrecht.
Johnson H L., Mitchell R.I., Iriarte B. and Wisniewski W.Z. 1966,
Comm. Lunar and Planet. Lab. no. 63.
Lindemann E. and Hauck B. 1973, Astron. Astrophys. Suppl. 11, 119.
Mermilliod J.C. 1973, Rapport interne du CDS 5/l973.
History:
* 08-Aug-1975: the catalogue was prepared on magnetic tape at the
Institut d'Astronomie de Lausanne and mailed to CDS, Strasbourg
* 21-Feb-1996: standardized documentation by Julie Anne Watko [SSDOO/ADC]
* 08-Aug-2016 (Francois Ochsenbein, CDS):
standardisation of file names, and separated number of observations
from the remarks in the file "measures.dat". The designations were
checked, and correct star identifications are reported in the file
"means.id1" (some errors, especially CD numbers, are annotated therein).
(End) Julie Anne Watko [SSDOO/ADC] 21-Feb-1996