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J/A+A/376/745       CCD standards for U and I in NGC 7790       (Petrov+, 2001)

CCD standards for U and I in the open cluster NGC 7790 Petrov G., Seggewiss W., Dieball A., Kovachev B. <Astron. Astrophys. 376, 745 (2001)> =2001A&A...376..745P
ADC_Keywords: Clusters, open ; Photometry, UBVRI ; Photometry, CCD Keywords: techniques: photometric - astronomical data bases: miscellaneous - open clusters: individual: NGC 7790 Abstract: Photometric U and I standard sequences in the field of the open cluster NGC 7790 are presented. The intention is to achieve wide ranges in magnitude and colour, making these sequences suitable for calibrating deep CCD photometry. The 84 standard stars extend the BVR sequences of Odewahn et al. (1992PASP..104..553O) to the near UV and IR, respectively. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 23 58 24 +61 13.0 NGC 7790 = C 2355+609 = OCl 276 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 107 84 Magnitudes and errors of all 84 standard stars
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Star number 6- 11 F6.3 mag Usmag U magnitude (close to Johnson's U magnitude) 14- 19 F6.4 mag e_Usmag Photometric error in U 22- 27 F6.3 mag Bsmag B magnitude (close to Johnson's B magnitude) 30- 35 F6.4 mag e_Bsmag Photometric error in B 38- 43 F6.3 mag Vsmag V magnitude (close to Johnson's V magnitude) 46- 51 F6.4 mag e_Vsmag Photometric error in V 54- 59 F6.3 mag Rsmag R magnitude (close to Kron/Cousins' R magnitude) 62- 67 F6.4 mag e_Rsmag Photometric error in R 70- 75 F6.3 mag Ismag I magnitude (close to Kron/Cousins' I magnitude) 78- 83 F6.4 mag e_Ismag Photometric error in I 86- 91 F6.3 mag d(B) Difference in B (1) 94- 99 F6.3 mag d(V) Difference in V (1) 102-107 F6.3 mag d(R) Difference in R (1)
Note (1): Magnitude differences to Odewahn et al. (1992PASP..104..553O)
Acknowledgements: Wilhelm Seggewiss
(End) Patricia Bauer [CDS] 11-Jul-2001
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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