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III/51B Michigan Catalogue of HD stars,Vol.2 (Houk 1978)
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Michigan Catalogue of two dimensional spectral types for the HD stars
(Vol.2: -52 to -40 degrees)
Houk N.
<Dept. of Astronomy, Univ. of Michigan Ann Arbor, Michigan (1978)>
=1978MSS...C02....0H
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ADC_Keywords: MK spectral classification; Plate data; Spectral types
Description:
This volume of the catalog contains all HD stars between -53.0 deg. and
-40.0 deg. in B1900 declination, and is part of a series of catalogs in the
University of Michigan program of systematic reclassification in the MK
system of the entire Henry Draper Catalogue (HD). The stars were
classified visually on objective-prism plates taken with the Michigan
Curtis-Schmidt telescope at Cerro Tololo Inter-American Observatory. The
4-degree + 6-degree prisms yield a dispersion at H-gamma of 108
angstroms/mm, with a resolution of about 2 angstroms/mm, comparable to that
of the original MK system. The spectra were taken on IIaO plates and
widened to 0.8 mm, with 20-, 4-, and 1-min. exposures being obtained. The
catalog BD includes spectral classifications, photographic magnitudes,
right ascension and declination (B1900), centennial precessions, galactic
coordinates, and cross identifications to the numbering systems of the HD,
CD, and CPD catalogs.
See also:
3031B : Volume 1 of this catalog (additional declination zones)
3080 : Volume 3 of this catalog (additional declination zones)
3133 : Volume 4 of this catalog (additional declination zones)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
adc.doc 79 771 ADC Documentation
vol2.dat 127 30400 The Catalogue, Vol.2
rem2.dat 326 4950 Remarks of Vol.2
plates.dat 36 353 List of Plate Codes
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Byte-by-byte Description of file: vol2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD Henry Draper Catalog (HD) number
7 A1 --- Case [*] '*' = sp. type lower case in printed ver.
8 A1 --- n_SpType [+] '+' if spectral type is from HD Catalog
9- 25 A17 --- SpType Spectral type
27 A1 --- Ave_Flag [A] 'A' if classification used is an average.
28 I1 --- q_SpType [1/4]? Quality of the classification,
see adc.doc
29- 33 A5 --- Remark Remark (see adc.doc Table 5 for description)
35- 40 A6 mag Ptg Photographic magnitude from HD catalog
(99.99 indicates unavailable Ptg).
41 A1 --- Var_Flag [V] 'V' if star is known or suspected variable
43- 44 I2 h RAh Hours RA, epoch 1900.0
46- 47 I2 min RAm Minutes RA, epoch 1900.0
49- 52 F4.1 s RAs Seconds RA, epoch 1900.0
53 A1 --- FlagPos [*] the '*' indicates a position known
to an arc-minute
54 A1 --- DE- Sign Dec, epoch 1900.0
55- 56 I2 deg DEd Degrees Dec, epoch 1900.0
58- 59 I2 arcmin DEm Minutes Dec, epoch 1900.0
61- 62 I2 arcsec DEs ? Seconds Dec, epoch 1900.0
(blank if FlagPos is flagged with '*')
64- 67 I4 0.01min/yr precRAm Centennial precession in RA, minutes
69- 72 F4.1 0.01s/yr precRAs Centennial precession in RA, seconds
73 A1 --- FlagPrec [*] if precession in RA given to 0.1
minutes/century in the published catalog.
74 A1 0.01arcmin/yr precDE- Centennial precession in Dec, sign
75- 76 I2 0.01arcmin/yr precDEm Centennial precession in Dec, minutes
78- 79 I2 0.01arcsec/yr precDEs Centennial precession in Dec, seconds
81- 85 F5.1 deg GLON Galactic longitude
87- 91 F5.1 deg GLAT Galactic latitude
92-101 A10 --- CPD Cape Photographic Durchmusterung
identification (CP-ZZNNNNN)
102-111 A10 --- CD Cordoba Durchmusterung
identification (CD-ZZNNNNN)
113-115 A3 --- Plate1 Plate code #1 (see file plates.dat)
117-119 A3 --- Plate2 Plate code #2 (see file plates.dat)
121-123 A3 --- Plate3 Plate code #3 (see file plates.dat)
125-127 A3 --- Plate4 Plate code #4 (see file plates.dat)
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Byte-by-byte Description of file: rem2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD Henry Draper Catalog (HD) number
8-326 A319 --- Remark Remarks in free form text
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Byte-by-byte Description of file: plates.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Code Plate code
7- 11 I5 --- Number Plate Number
15- 32 A18 --- Date Exposure date
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Historical Notes:
* 17-Nov-1993: list of plates added at CDS
* 08-Dec-1994: list of plates corrected by Shiro Nishimura [ADAC/NAOJ]
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(End) Francois Ochsenbein [CDS] 17-Nov-1993