J/A+AS/122/559 uvby-beta CCD photometry secondary standard (Clausen+ 1997)
Secondary standard stars for uvby-beta CCD photometry
Clausen J.V., Larsen S.S., Garcia J.M, Gimenez A., Storm J.
<Astron. Astrophys. Suppl. Ser. 122, 559 (1997)>
=1997A&AS..122..559C 1997A&AS..122..559C (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, standards ; Photometry, uvby, beta
Keywords: Stromgren photometry - astronomical data bases: miscellaneous -
stars: fundamental parameters - stars: general
Abstract:
Accurate standard uvby indices are presented for 73 southern B, A, F
and G stars in the V magnitude range 8.2 to 10.9. They cover all three
transformation regions of the uvby system (Olsen 1983A&AS...54...55O 1983A&AS...54...55O)
well. Standard β indices are included for the 55 B, A, and F
stars in the sample. Our results provide a useful set of secondary
standards for uvby β CCD photometry with southern hemisphere 1-2m
class telescopes. A critical comparison with published photometry, in
general based on fewer observations, is given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3 80 71 Catalogue of transformed uvby indices for the
observed primary standard stars.
table4 28 39 Catalogue of transformed beta indices for the
observed primary standard stars.
table5 92 73 Catalogue of observed secondary standard stars
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD (Cat. III/135) number
8 A1 --- T [ADG] uvby transformation region:
A (BAF),D (GKV), G (GKIII)
10- 11 I2 --- o_Vmag Number of observations
13- 17 F5.3 mag Vmag V magnitude
19- 23 F5.3 mag e_Vmag rms uncertainty on Vmag
25- 30 F6.3 mag b-y b-y color index
32- 36 F5.3 mag e_b-y rms uncertainty on b-y
38- 43 F6.3 mag m1 m1 color index
45- 49 F5.3 mag e_m1 rms uncertainty on m1
51- 56 F6.3 mag c1 c1 color index
58- 62 F5.3 mag e_c1 rms uncertainty on c1
64- 66 I3 10-3mag dVmag Standard - transformed V magnitude value
68- 70 I3 10-3mag db-y Standard - transformed b-y color index value
72- 74 I3 10-3mag dm1 Standard - transformed m1 color index value
76- 78 I3 10-3mag dc1 Standard - transformed c1 color index value
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD HD number
8 A1 --- T [AB] Transformation region
10- 11 I2 --- o_Beta Number of observations
13- 17 F5.3 mag Beta Beta color index
19- 23 F5.3 mag e_Beta rms uncertainty on Beta
25- 26 I2 10-3mag dBeta Standard - transformed Beta value
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Byte-by-byte Description of file: table5
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Bytes Format Units Label Explanations
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1- 9 A9 --- HD/CPD HD or CPD name
11- 14 A4 --- ID E-region identification (Cousins & Stoy
1962RGOB...49....3C 1962RGOB...49....3C),
16- 17 A2 --- T uvby (A,D,G) & beta (A,B) transformation regions
19- 20 I2 --- o_Vmag Number of observations in Vmag
22- 23 I2 --- o_b-y Number of observations in uvby
25- 26 I2 --- o_Beta ? Number of observations in Beta
28- 33 F6.3 mag Vmag V magnitude
35- 39 F5.3 mag e_Vmag rms uncertainty on Vmag
41- 46 F6.3 mag b-y b-y color index
48- 52 F5.3 mag e_b-y rms uncertainty on b-y
54- 58 F5.3 mag m1 m1 color index
60- 64 F5.3 mag e_m1 rms uncertainty on m1
66- 71 F6.3 mag c1 c1 color index
73- 77 F5.3 mag e_c1 rms uncertainty on c1
79- 83 F5.3 mag Beta ? Beta color index
85- 89 F5.3 mag e_Beta ? rms uncertainty on Beta
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Acknowledgements: Jens Viggo Clausen
(End) Patricia Bauer [CDS] 05-Sep-1996