3051B III/51B Michigan Catalogue of HD stars,Vol.2 N Houk Dept. of Astronomy, Univ. of Michigan Ann Arbor, Michigan ??? ??? 1978 1978MSS...C02....0H III/31B : Volume 1 of this catalog (additional declination zones) III/80 : Volume 3 of this catalog (additional declination zones) III/133 : Volume 4 of this catalog (additional declination zones) MK spectral classification Plate data Spectral types 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.

HD Henry Draper Catalog (HD) number --- Case '*' = sp. type lower case in printed ver. --- n_SpType '+' if spectral type is from HD Catalog --- SpType Spectral type --- Ave_Flag 'A' if classification used is an average. --- q_SpType Quality of the classification, see adc.doc --- Remark Remark (see adc.doc Table 5 for description) --- Ptg Photographic magnitude from HD catalog (99.99 indicates unavailable Ptg). mag Var_Flag 'V' if star is known or suspected variable --- RAh Hours RA, epoch 1900.0 h RAm Minutes RA, epoch 1900.0 min RAs Seconds RA, epoch 1900.0 s FlagPos the '*' indicates a position known to an arc-minute --- DE- Sign Dec, epoch 1900.0 --- DEd Degrees Dec, epoch 1900.0 deg DEm Minutes Dec, epoch 1900.0 arcmin DEs Seconds Dec, epoch 1900.0 (blank if FlagPos is flagged with '*') arcsec precRAm Centennial precession in RA, minutes 0.01min/yr precRAs Centennial precession in RA, seconds 0.01s/yr FlagPrec if precession in RA given to 0.1 minutes/century in the published catalog. --- precDE- Centennial precession in Dec, sign 0.01arcmin/yr precDEm Centennial precession in Dec, minutes 0.01arcmin/yr precDEs Centennial precession in Dec, seconds 0.01arcsec/yr GLON Galactic longitude deg GLAT Galactic latitude deg CPD Cape Photographic Durchmusterung identification (CP-ZZNNNNN) --- CD Cordoba Durchmusterung identification (CD-ZZNNNNN) --- Plate1 Plate code #1 (see file plates.dat) --- Plate2 Plate code #2 (see file plates.dat) --- Plate3 Plate code #3 (see file plates.dat) --- Plate4 Plate code #4 (see file plates.dat) --- HD Henry Draper Catalog (HD) number --- Remark Remarks in free form text --- Code Plate code --- Number Plate Number --- Date Exposure date --- adc.docADC Documentation Francois Ochsenbein CDS 1993Nov17 UNKNOWN UNKNOWN * 17-Nov-1993: list of plates added at CDS * 08-Dec-1994: list of plates corrected by Shiro Nishimura [ADAC/NAOJ] III_51B.xml