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III/31B           Michigan catalogue for the HD stars, vol. 1    (Houk+, 1975)

Michigan Catalogue of two dimentional spectral types for the HD stars. (Vol.1, -90deg < δ < -53deg) Houk N., Cowley A.P. <Ann Arbor, Univ. of Michigan, 1975>
ADC_Keywords: MK spectral classification Description: This catalog represents the first volume of the University of Michigan systematic reclassification of the Henry Draper Catalogue (HD) stars on the MK system. It contains all HD stars south of -53 degrees (equinox 1900). A detailed description is included in the "adc.doc" file. See also: III/51 : Michigan Catalogue, Vol.2 (-53/-40deg, Houk N., 1978) III/80 : Michigan Catalogue, Vol.3 (-40/-26deg, Houk N., 1982) III/133 : Michigan Catalogue, Vol.4 (-26/-12deg, Houk N., 1988) File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file adc.doc 126 936 ADC Documentation (by Theresa A. Nagy) vol1.dat 107 36382 The Catalogue, Vol.1 rem1.dat 315 4636 Remarks of Vol.1 plates1.dat 32 479 List of Plate Codes
Byte-by-byte Description of file: vol1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD Henry Draper Catalog number (cat. III/135) 7 A1 --- Case [*] '*' if spectral type has lower case in printed version 8 A1 --- f_SpType [+] '+' if spectral type is from HD Catalog 9- 24 A16 --- SpType The Spectral type 26 A1 --- n_SpType [A] 'A' if classification is an average (3) 27 I1 --- q_SpType [1/4]? Quality of the classification (1=good), see ADC document (adc.doc) and (3) 29- 32 A4 --- Remark [BDLOR ] indicates a remark (5) 35- 39 F5.2 mag Ptg ?=99.9 Photographic magnitude from HD catalog 40 A1 --- Vflg 'V' if star is known or suspected variable 42- 43 I2 h RAh Hours RA (B1900) 45- 48 F4.1 min RAm Minutes RA 50 A1 --- DE- Sign Dec 51- 52 I2 deg DEd Degrees Dec (B1900) 54- 55 I2 arcmin DEm Minutes Dec 57- 61 F5.1 min/ha precRA Centennial precession in RA (1) 63- 65 I3 arcmin/ha precDE Centennial precession in Dec 67- 71 F5.1 deg GLON Galactic longitude 73- 77 F5.1 deg GLAT Galactic latitude 78- 87 A10 --- CPD Cape Photographic Durchmusterung (4) 89- 91 A3 --- Plate1 Plate code #1 (2) 93- 95 A3 --- Plate2 Plate code #2 (2) 97- 99 A3 --- Plate3 Plate code #3 (2) 101-103 A3 --- Plate4 Plate code #4 (2) 105-107 A3 --- Plate5 Plate code #5 (2)
Note (1): very near the south pole, some of the precessions are larger than -99.9 min/century and these values are in the remarks. Note (2): Each plate has its own identification code (see file plates1.dat) Note (3): for averaged spectra, q_SpType is assigned the highest of the qualities used in forming the average. Note (4): Cape Photographic Ducrchmusterung is CDS Cat. I/108. 'CP' is in bytes 78-79, -ZZNNNNN in bytes 80-87 Note (5): the flags refer to the type of notes detailed in rem1.dat: B = remarks contains designations of bright stars D = remarks concerning duplicity L = information from the literature O = remarks that do not fit into any other category R = remarks related to the spectrum, written by the author (N. Houk). More details about the meaning of these notes may be found in Table 4-2 of the "adc.doc" file
Byte-by-byte Description of file: rem1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD Henry Draper Catalog (HD) number 7-315 A309 --- Remark Remarks in free form text
Byte-by-byte Description of file: plates1.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Plate Plate code 7- 11 I5 --- Number Plate Number 15- 32 A18 --- Date Exposure date
Historical Notes: * 09-Nov-1993: list of plates added at CDS * 08-Dec-1994: list of plates corrected by Shiro Nishimura [ADAC/NAOJ] * 13-Jun-2004: cosmetic changes at CDS (Francois Ochsenbein) * 24-Sep-2006: remark of duplicity about HD 107751 moved to HD 107738 (communicated by Brian Skiff)
(End) Francois Ochsenbein [CDS] 08-Dec-1994
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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