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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
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). 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). 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:
FileName Lrecl Records Explanations
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 61 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
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
Bytes Format Units Label Explanations
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)
Note (1): numerical designation for the star identification in the Geneva coded numbering system is described by Mermilliod (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.
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
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
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
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 Lindemann, E., and Hauck, H., =1973A&AS...11..119L
(End) Francois Ochsenbein [CDS] 05-Apr-1996
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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