II/164 DDO Photoelectric Photometric Catalog (Mermilliod+ 1989)
Catalogue of DDO Photometry 88
Mermilliod J.C., Nitschelm C.
<Astron. Astrophys. Suppl. Ser. 81, 401 (1989)>
=1989A&AS...81..401M 1989A&AS...81..401M
ADC_Keywords: Colors ; Photometry, DDO
Description:
This catalogue collects the DDO photometric data published in the
astronomical literature until the end of 1988, and contains 8034 DDO
measurements, concerning 6139 stars.
The DDO 6-filter has the following
peak wavelengths and widths:
------------------------
Filter Peak Width
[nm] [nm]
------------------------
35 346.0 38.3
38 381.5 33.0
41 416.6 8.3
42 425.7 7.3
45 451.7 7.6
48 488.6 18.6
51 (*) 513.0 13.4
------------------------
(*) additional to DDO.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
mean.dat 122 6139 Catalog of homogeneous data
obs.dat 80 8034 Catalog of individual observations
refs.dat 80 396 References (contains 76 empty lines)
numsys.txt 80 2626 Description of the code numbering system (LID)
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See also:
II/80 : Homogeneous Photometry of Bright Stars in DDO system (McClure+ 1981)
GCPD/12 : DDO Photometry page at Lausanne
(http://obswww.unige.ch/gcpd/ph12.html)
Byte-by-byte Description of file: mean.dat
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Bytes Format Units Label Explanations
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2- 11 A10 --- LID Lausanne identification code (G1)
12 A1 --- m_LID [D1239] Remarks on duplicity and variability
13 A1 --- f_LID [V] Variability flag
15- 18 I4 --- HR ? Number in the Bright Star Catalog V/50
20- 25 I6 --- HD ? Number in Henry Draper Catalog III/115
27- 35 A9 --- DM Durchmusterung designation (BD, CD, CPD)
37- 48 A12 --- Oname Other designation
49- 50 I2 h RAh ? Right Ascension B1950 (hours)
52- 53 I2 min RAm ? Right Ascension B1950 (minutes)
55- 56 I2 s RAs ? Right Ascension B1950 (seconds)
58 A1 --- DE- Declination B1950 (sign)
59- 60 I2 deg DEd ? Declination B1950 (degrees)
62- 65 F4.1 arcmin DEm ? Declination B1950 (minutes)
67- 72 F6.3 mag m48 ? Magnitude in the filter 48 of DDO system
74- 79 F6.3 mag C(48-51) ? Colour index in DDO system
81- 86 F6.3 mag C(45-48) ? Colour index in DDO system
88- 93 F6.3 mag C(42-45) ? Colour index in DDO system
95-100 F6.3 mag C(41-42) ? Colour index in DDO system
102-107 F6.3 mag C(38-41) ? Colour index in DDO system
109-114 F6.3 mag C(35-38) ? Colour index in DDO system
119 A1 --- l_Nobs [>S] Limit flag on Nobs, or 'S' for standard
121-122 I2 --- Nobs ? Number of measurements (blank for standard)
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Byte-by-byte Description of file: obs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 11 A10 --- LID Lausanne identification code (G1)
12 A1 --- m_LID [D1239] Remarks on duplicity
13 A1 --- f_LID [V] Variability flag
15- 20 F6.3 mag m48 ? Magnitude in the filter 48 of DDO system
22- 27 F6.3 mag C(48-51) ? Colour index in DDO system
29- 34 F6.3 mag C(45-48) ? Colour index in DDO system
36- 41 F6.3 mag C(42-45) ? Colour index in DDO system
43- 48 F6.3 mag C(41-42) ? Colour index in DDO system
50- 55 F6.3 mag C(38-41) ? Colour index in DDO system
57- 62 F6.3 mag C(35-38) ? Colour index in DDO system
67 A1 --- l_Nobs [>S*] Limit flag on Nobs, 'S' for standard
'*' for an estimated number
69- 70 I2 --- Nobs ? Number of measurements (blank for standard)
76- 80 I5 --- r_m48 Reference of the observation in "refs.dat"
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Ref [12001/12081] Reference number
9- 80 A72 --- Text Text of reference (includes the bibcode)
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Global Notes:
Note (G1): The Lausanne ID (LID) is described in file "numsys.txt" ---
the decimal point is however not used in the tables.
(End) Francois Ochsenbein [CDS] 03-Dec-2002