Astronomical Data Center
ADC/CDS Standard Document for Catalog:
/catalogs/3/3133/
The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:
III/133 Michigan Catalogue of HD stars, Vol.4 (Houk+, 1988)
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Catalogue of two-dimensional spectral types for the HD stars. Vol.4
Houk N., Smith-Moore M.
<Ann Arbor, Dept. of Astronomy, Univ. of Michigan (1988)>
=1988MSS...C04....0H
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ADC_Keywords: MK spectral classification; Spectral types; Plate data
Description:
This volume of the catalog contains all HD stars in the declination range
-26 degrees up to and including -12 degrees (equinox 1900) 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).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
adc.doc 79 961 Documentation by Wayne H. Warren Jr.
vol4.dat 127 33301 The Catalogue (vol.4)
rem4.dat 375 5143 Notes (to vol.4)
plates.dat 32 505 Summary of Plates
changes.txt 80 124 List of errors corrected as reported by
Shiro Nishimura [ADAC/NAOJ]
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Byte-by-byte Description of file: vol4.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 [*] if sp. type has lower case in
printed ver.
8 A1 --- n_SpType [+] if spectral type is from HD Catalog
9- 26 A18 --- SpType Spectral type
27 A1 --- Ave_Flag [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 Appendix A
for description)
35- 40 A6 mag Ptg Photographic magnitude from HD catalog
41 A1 --- Var_Flag '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
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
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
74 A1 0.01arcmin/yr precDE-s 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
93-102 A10 --- DM Durchmusterung identification
('BD', 'CD', or 'CP' in bytes 93-94;
-ZZNNNNN in bytes 95-102)
106-111 I6 --- SAO [1/258997]? SAO Catalog number
112-115 A4 --- Plate1 Plate code #1 (see file plates.dat)
116-119 A4 --- Plate2 Plate code #2 (see file plates.dat)
120-123 A4 --- Plate3 Plate code #3 (see file plates.dat)
124-127 A4 --- Plate4 Plate code #4 (see file plates.dat)
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Byte-by-byte Description of file: rem4.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD Henry Draper Catalog (HD) number
8-375 A368 --- 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- 4 A4 --- Code Plate code
7- 11 I5 --- Number Plate Number
15- 32 A18 --- Date Exposure date
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Historical Notes:
* 22-Nov-1993: list of plates added at CDS
* 08-Dec-1994: list of plates provided by Shiro Nishimura [ADAC/NAOJ]
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(End) Francois Ochsenbein [CDS] 08-Dec-1994
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