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II/45                Photometry of strong CN stars          (Janes+ 1971)

Strong Cyanogen Stars, Table 2: Photometric Data Janes K.A., McClure R.D. <Astrophys. J., 165, 561 (1971)> =1971ApJ...165..561J
ADC_Keywords: Photometry, CN band; Colors; Stars, cyanogen Description: A group of 185 late G and K giants, selected from the US Naval Observatory Catalog of Photoelectric Observations (Cat. II/4) because they had Ultraviolet deficiences, were observed with the intermediate band photometric system of the David Dunlap Observatory (defined by McClure and van den Bergh 1968AJ.....73..313M). The DDO photometry is included in Cat. II/17. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file data.dat 70 185 Photometric results (Table 2 of paper)
See also: <II/46/> : A Photometric Investigation of Strong Cyanogen Stars (McClure 1970) Byte-by-byte Description of file: data.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [HD] 3- 8 I6 --- HD Star number in Henry Draper Catalog (III/135) 9 A1 --- f_HD [*] indicates a Spectroscopic Binary 17- 21 F5.3 mag 45-48 color C(45-48) in DDO system 23- 27 F5.3 mag 42-45 color C(42-45) in DDO system 29- 33 F5.3 mag 41-42 color C(41-42) in DDO system 36- 37 A2 --- Obs [BCKP ] Observatory (1) 40- 44 F5.2 mag d(U-B) UV-excess δ(U-B) 46- 50 F5.2 mag dCm Cyanogen excess δCm(41-42) (2) 52- 61 A10 --- SpT Photometric spectral type 68- 70 I3 pc Dist Photometric distance
Note (1): observatories are: B = Bethany station of the Yale Observatory C = Cerro Tololo Interamerican Observatory K = Kitt Peak National Observatory P = Previously published value, either in Paper I (1970AJ.....75...41M), or in McClure & van den Bergh (1968AJ.....73..313M) Note (2): "strong-cyanogen" stars have δCm(41-42)≥0.05mag, while "normal stars" have |δCm(41-42)|≤0.03mag. The cyanogen index is defined as: Cm(41-42) = C(41-42) - 1.66[C(45-48) - 0.45C(42-45) - 0.792]
History: * the contents of table 2 was originally keypunched at Institut d'Astronomie de Lausanne (Switzerland) in October 1972, * 08-May-1996: Short abstract added by Julie Anne Watko [SSDOO/ADC] * 16-Jan-2017: description added at CDS (Francois Ochsenbein)
(End) Francois Ochsenbein [CDS] 16-Jan-2017
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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