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II/20A         UBV Photometry of O and B Stars in Vela    (Denoyelle 1977)

The Spatial Distribution of Young Stars in Vela Denoyelle J. <Astron. Astrophys. Suppl. Ser., 27, 343 (1977)> =1977A&AS...27..343D
ADC_Keywords: Reddening ; Photometry, UBV ; Colors ; Stars, OB Description: Photoelectric UBV values, derived from observations made at the Boyden and ESO observatories, are presented for 358 early-type stars in the Vela section of the southern Milky Way. Remarks, accurate positions and notes have been added in July 2016 at CDS (Francois Ochsenbein) File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file data.dat 127 381 Results (table 3 of the paper) remarks.dat 214 120 Original remarks (added in July 2016) position.dat 79 381 Accurate positions of the stars (added July 2016) notes.dat 214 44 Remarks about star identifications in the course of position retrieval (added in July 2016)
Byte-by-byte Description of file: data.dat
Bytes Format Units Label Explanations
1 I1 --- m_Seq [1/5]? Multiplicity index to star 2- 4 I3 --- Seq [1/358] Running number 6- 11 I6 --- HD ? HD number 13- 20 A8 --- CPD ? Cape Photographic Durchmusterung (or CD) 21 A1 --- n_CPD [ *] * = Cordoba Durchmusterung designation 22- 23 I2 h RAh Right Ascension (1950) hours 25- 28 F4.1 min RAm Right Ascension (1950) minutes 29 A1 --- DE- Declination (1950) sign 30- 31 I2 deg DEd Declination (1950) degrees 33- 34 I2 arcmin DEm Declination (1950) arcminutes 36- 41 F6.2 deg GLON Galactic longitude 44- 48 F5.2 deg GLAT Galactic latitude 50- 54 F5.2 mag Vmag [2.4/14.5]?=99.99 V magnitude 55 A1 --- u_Vmag [ ()] Uncertainty flag for V 57- 61 F5.2 mag B-V ?=99.99 (B-V) color index 62 A1 --- u_B-V [ (] Uncertainty flag for B-V 64- 68 F5.2 mag U-B ?=99.99 (U-B) color index 69 A1 --- u_U-B [ (] Uncertainty flag for U-B 70- 78 A9 --- Sp MK or HD spectral classification 79 I1 --- r_Sp [1,8]? Number of the source for MK Dp. 81 A1 --- em [ E] E = Hα emission noted on red plates 82- 85 A4 --- Sp2 Spectral type obtained from Q method 87- 91 F5.2 mag Q ?=- Q parameter = (U-B)-0.72 (B-V) 94- 97 F4.2 mag E(B-V) ?=- (B-V) colour excess 100-103 F4.2 mag A(V) ?=- A(V) parameter = 3E(B-V) 107-110 F4.1 mag m-M ?=- Distance modulus 112-116 I5 pc R ?=- Distance of the star 119-122 I4 pc Z Distance from the galactic plane [R*sin(GLAT)] 125-126 I2 --- Nobs Number of observations 127 A1 --- rem [ *] comment in file "remarks.dat"
Byte-by-byte Description of file: remarks.dat notes.dat
Bytes Format Units Label Explanations
1 I1 --- m_Seq [1/5]? Multiplicity index to star 2- 4 I3 --- Seq [1/358] Running number 6-214 A209 --- Text Text of note (original notes in "remarks.dat", notes added at CDS about problematic star identification in "notes.dat")
Byte-by-byte Description of file: position.dat
Bytes Format Units Label Explanations
1 I1 --- m_Seq [1/5]? Multiplicity index to star 2- 4 I3 --- Seq [1/358] Running number 5 A1 --- f_Sname [*] Flag for insecure identification 7- 8 I2 h RAh ? Right Ascension J2000, Ep=J2000 (hours) 10- 11 I2 min RAm ? Right Ascension J2000, Ep=J2000 (minutes) 13- 17 F5.2 s RAs ? Right Ascension J2000, Ep=J2000 (seconds) 19 A1 --- DE- Declination J2000, Ep=J2000 (sign) 20- 21 I2 deg DEd ? Declination J2000, Ep=J2000 (degrees) 23- 24 I2 arcmin DEm ? Declination J2000, Ep=J2000 (minutes) 26- 29 F4.1 arcsec DEs ? Declination J2000, Ep=J2000 (seconds) 31 A1 --- --- [=] 32- 48 A17 --- Sname Name understandable by Simbad 50- 79 A30 --- Name2 Other name
References: Denoyelle J. (1977) Astron. Astrophys. Suppl. Ser. 27, 343. History: * The catalog was prepared at CDS before 1975 * 30-May-1996: standardized documentation added by Julie Anne Watko [SSDOO/ADC] * 27-Jul-2016 (version 'A', Francois Ochsenbein, CDS): the original remarks were added (file "remarks.dat"); stars have been identified with the help of Simbad, Aladin, the published finding charts, and UCAC4 (Zacharias et al. 2013, Cat. I/322). The result is included in the files "position.dat" (coordinates are blank for the 3 stars which could not be identified), and "notes.dat" (remarks added in the course of the identification)
(End) Francois Ochsenbein [CDS] 28-Jul-2016
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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