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III/214             Michigan Catalogue of HD stars, Vol.5    (Houk+, 1999)

Michigan Catalogue of Two-Dimensional Spectral Types for the HD stars, Vol. 5 Houk N., Swift C. <Department of Astronomy, University of Michigan, Ann Arbor Michigan (1999)>
ADC_Keywords: MK spectral classification ; Surveys Description: This volume of the catalog contains all HD stars in the declination range -12 degrees up to and including +05 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). The stars were classified visually on objective-prism plates taken with the Michigan Curtis Schmidt telescope at Cerro Tololo Inter-American Observatory. The 4° + 6° prisms yield a dispersion at Hγ of 108 Å/mm, and the average resolution is about 2 Å/mm, comparable to that of the original MK system [MKK]. The spectra were taken on IIaO plates and widened to 0.8 mm, with 20min, 4min, and 1min exposures being obtained. In order to maintain a uniform, consistent system, all the spectral classification was done by one person (Houk). It is recommended that users read the accompanying text (preface.tex) before utilizing the catalogue in order to take full advantage of its contents and to learn the notation and practices followed. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file preface.tex 2162 1417 Preface to the Catalog (LaTeX) preface.ps 72 2579 Preface to the Catalog (PostScript) vol5.dat 137 31075 The Catalog notes.dat 80 5665 Remarks and Notes plates.dat 32 615 List of Plates
See also: III/31 : Michigan Catalogue, Vol.1 (-90/-53deg, Houk N., 1975) 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) III/135 : Henry Draper Catalogue and Extension (Cannon+ 1918-1924; ADC 1989) Byte-by-byte Description of file: vol5.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD *Henry Draper Catalog (HD) number 8 A1 --- f_SpType [+] if spectral type is from HD Catalog 9- 26 A18 --- SpType Spectral type (notation explained in file "preface.tex") 31 A1 --- n_SpType [A] if classification used is an average. 32 I1 --- q_SpType *[1/4]? Quality of the classification, 33- 36 A4 --- Remark *[VBLRD ] Remark detailed in the file notes.dat 40- 44 F5.2 mag Ptg ? Photographic magnitude (see also n_Ptg) 45 A1 --- n_Ptg *[BV*] Other type of magnitude 47- 48 I2 h RAh Hours RA, 1900.0 50- 51 I2 min RAm Minutes RA, 1900.0 53- 56 F4.1 s RAs [0,60] Seconds RA, 1900.0 59 A1 --- DE- Sign Dec, 1900.0 60- 61 I2 deg DEd Degrees Dec, 1900.0 63- 64 I2 arcmin DEm Minutes Dec, 1900.0 66- 67 I2 arcsec DEs ? Seconds Dec, 1900.0 69- 71 I3 min/hyr precRAm Centennial precession in RA, minutes 74- 77 F4.1 s/hyr precRAs Centennial precession in RA, seconds 79 A1 --- precDE- Centennial precession in Dec, sign 80- 81 I2 arcmin/hyr precDEm Centennial precession in Dec, minutes 83- 84 I2 arcsec/hyr precDEs Centennial precession in Dec, seconds 86- 90 F5.1 deg GLON Galactic longitude 92- 96 F5.1 deg GLAT Galactic latitude 98-106 A9 --- BD Bonner Durchmusterung identification or CSI number when byte 101 contains a '-' 107 A1 --- m_BD Multiplicity indicator for binaries 112-117 I6 --- SAO [1/258997]? SAO Catalog (Cat. I/131) number 119-122 A4 --- Plate1 Plate code #1 (see file plates) 124-127 A4 --- Plate2 Plate code #2 (see file plates) 129-132 A4 --- Plate3 Plate code #3 (see file plates) 134-137 A4 --- Plate4 Plate code #4 (see file plates)
Note on HD: Due to an error in the HD Catalogue, HD numbers 91169 and 109005 represent the same star. It has bee n listed twice in the volume for the user's convenience. Note on q_SpType: the quality codes are: 1 = spectra are of near-optimum exposure and unoverlapped by other spectra. 2 = spectra may be slightly under or overexposed or slightly overlapped. An error analysis shows that quality 2 types are very nearly as accurate as quality 1's. 3 = spectra are usually quite overlapped or underexposed 4 = poor quality, though still probably better than the HD type. See also the details in section IIIB of the introduction file "preface.tex" Note on Remark: the code indicates a type of remark as follows: B = the remark contains the HR (Bright Star Catalogue) number, and Bayer or Flamsteed designations where applicable L = information from the astronomical literature. R = remarks written by N. Houk related to the spectrum. D = remarks about duplicity (visual binaries) V = remarks about variability See also the details in section V of the introduction file "preface.tex". Note on n_Ptg: the symbols indicate which magnitude is listed: B = blue (of UBV) magnitude V = Visual magnitude * = Variable star with an amplitude larger than 1mag
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD Henry Draper Catalog (HD) number, repeated if several lines are needed. 8- 80 A73 --- Text Remarks in free form text (with TeX macros)
Byte-by-byte Description of file: plates.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Code Plate code 7- 11 I5 --- Number Plate Number 13- 31 A19 --- Date Exposure date
Acknowledgements: It is a pleasure to thank Nancy Houk [] and Carrie Swift [] who supplied the data and answered patiently to many questions.
(End) Francois Ochsenbein [CDS] 13-Mar-2000
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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