II/158A uvby-beta Catalogue, 1989 version (Hauck+ 1990)
uvby-beta Photoelectric Photometric Catalogue (1989 version)
Hauck B., Mermilliod M.
<Astron.Astrophys.Suppl. Ser. 86, 107 (1990)>
=1990A&AS...86..107H 1990A&AS...86..107H
ADC_Keywords: Photometry, uvby, beta
Description:
The catalog is a compilation of uvby and H-beta photoelectric
photometric data published in the literature through the end of 1988.
It supersedes an earlier edition by the same compilers
(1985A&AS...60...61H 1985A&AS...60...61H). All individual observations are given in one
file, while a separate file contains a single set of homogeneous means
for each object. Other files give the complete set of bibliographical
references and a definition of the Geneva coded numbering system used
to identify the stars. The compilation includes 69190 observations of
44896 stars. The homogeneous means were computed using the method of
Lindemann and Hauck (1973A&AS...11..119L 1973A&AS...11..119L). This method refers each
source back to the standard system and compares all stars in common.
Weights are computed based on this comparison, then used when the
final means are computed for each star. In general, these means will
be the best values for each object but may not be suitable for all
applications, especially when variability is suspected. The data in
the observations file include coded number (identifier), double and
variable codes, V magnitude, uvby, beta indices and numbers of
observations, and reference code. The homogeneous means file contains
only the object identifier and the homogeneous indices of the uvby,
beta system. (No V magnitudes are included in the means file.)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
adc.doc 80 590 The documentation by Wayne H, Warren (May 1991)
data 80 69190 The uvby-beta measurements with references
mean 56 44896 The uvby-beta homogenized data
print 91 46154 The catalogue with cluster names
code 80 2624 Lausanne Identification (LID) definitions
refs 80 1832 References with full titles
refs.dat 88 416 References with bibcodes
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See also:
II/165 : Catalogue of Eggen's uvby photometry
GCPD/04 : definitions and database of uvby-beta photometry, maintained
at Lausanne/Geneve Observatory
Byte-by-byte Description of file: data
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Bytes Format Units Label Explanations
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2- 11 I10 --- LID Code number (1)
12 A1 --- m_LID [1-8DS] Remark on duplicity or
identification of components (1)
13 A1 --- VarFlag [V] Remark on variability (1)
14- 19 F6.3 mag Vmag []? V magnitude (2)
22- 27 F6.3 mag b-y []? colour index (3)
30- 35 F6.3 mag m1 []? colour index (3)
38- 43 F6.3 mag c1 []? colour index (3)
45 A1 --- n_uvby [S/*] Number of observations flag (4)
46- 48 I3 --- o_uvby []? Number of measurements
52- 56 F5.3 mag beta ? Beta index (5)
58 A1 --- n_beta [S/*] Number of observations flag (4)
59- 61 I3 --- o_beta ? Number of observations in Beta index
78- 80 I3 --- RefNum [1/450] Reference number (see file refs)
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Note (1): numerical designation for the star identification in the
Geneva coded numbering system is described by Mermilliod
(1978BICDS..14...32M 1978BICDS..14...32M), but an updated listing applicable
specifically to this catalog is given as file 'code'.
The number may be followed by a double-star flag (byte 12)
and/or a variability flag (byte 13) if applicable.
The flag meanings are as follows:
D Measurement included >1 component of a multiple system
1, 2, ... Individual component of a multiple system was measured
V One or more indices display slight variability
Note (2): Magnitude in the UBV system, as reported in the source
reference and transformed from the measured y magnitude,
or possibly taken from other sources. Data precision can
vary within the field, since most data are reported to 0.01 mag,
but some are given to 0.001 mag.
Note (3): the photometric color indices of the standard four-color
system, (see GCPD/04 for a description of the Stroemgren system)
The m1 and c1 indices are defined as:
m1 = (v - b) - (b - y)
c1 = (u - v) - (v - b)
Data precision varies and trailing bytes may be blank if
the source publication reported values only to tenths or
hundredths of a magnitude.
Note (4): the flag meanings are as follows:
blank The number of observations reported in the source
reference is given
/ Number of observations not given in source reference
and is therefore recorded as 1
* The number of observations reported is a minimum;
i.e., the actual number of observations is not given
in the source reference, but it is stated that at least
"o_" observations contributed to the published values.
Note (5): the reddening-independent index of the standard HBeta
system (see <GCPD/??> for a description of the HBeta filter
centered on the HBeta line at 468.1 nm). The data precision varies,
in which case trailing bytes are blank.
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Byte-by-byte Description of file: mean
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 11 I10 --- LID Code number (see Note 1 above)
12 A1 --- m_LID [1-8DS] Remark on duplicity or identification
of components (see Note 1 above)
13 A1 --- VarFlag [V] Remark on variability (see Note 1 above)
14- 19 F6.3 mag Vmag []? V magnitude (see Note 2 above)
22- 27 F6.3 mag b-y []? colour index (see Note 3 above)
30- 35 F6.3 mag m1 []? colour index (see Note 3 above)
38- 43 F6.3 mag c1 []? colour index (see Note 3 above)
45 A1 --- n_uvby [S/*] Flag on o_uvby (See Note 4 above)
46- 48 I3 --- o_uvby []? Number of measurements
52- 56 F5.3 mag beta ? Beta index (See Note 5 above)
58 A1 --- n_beta [S/*] Flag on o_beta (See Note 4 above)
59- 61 I3 --- o_beta ? Number of observations in Beta index
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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- 3 I3 --- RefNum [1/450] Reference number
5- 23 A19 --- BibCode 19-digit Bibliographical code
25- 88 A64 --- Authors First Author of the publication
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Historical Notes:
* March 1990: tape received at CDS, Strasbourg, from M. Mermilliod
(Institut d'Astronomie de Lausanne)
* May 1991: Modifications and Documentation made by Wayne H. Warren,
ADC, NASA/Goddard (see adc.doc, section 3)
* 05-April-1996: added file "refs.dat" which contains the
so-called "BibCodes" (see the explanations e.g. at
http://cdsweb.u-strasbg.fr/simbad/refcode.html)
and missing references 440 and 450.
References:
Hauck, H., and Mermilliod, M., =1985A&AS...60...61H 1985A&AS...60...61H
Lindemann, E., and Hauck, H., =1973A&AS...11..119L 1973A&AS...11..119L
(End) Francois Ochsenbein [CDS] 05-Apr-1996