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:
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FileName Lrecl Records Explanations
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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
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Byte-per-byte Description of file: vol1.dat
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Bytes Format Units Label Explanations
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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)
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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
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Byte-per-byte Description of file: rem1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD Henry Draper Catalog (HD) number
7-315 A309 --- Remark Remarks in free form text
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Byte-per-byte Description of file: plates1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Plate Plate code
7- 11 I5 --- Number Plate Number
15- 32 A18 --- Date Exposure date
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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