III/171 MK Classifications for F- and G-type stars (Harlan, 1969-1981)
MK Classifications for F- and G-type stars
Harlan E.Q.
<Astron. J. 74, 916 (1969); 75, 507 (1970); 79, 682 (1974); 86, 1896 (1981)>
=1969AJ.....74..916H 1969AJ.....74..916H
=1970AJ.....75..507H 1970AJ.....75..507H
=1974AJ.....79..682H 1974AJ.....79..682H
=1981AJ.....86.1896H 1981AJ.....86.1896H
=2012yCat.3171....0H 2012yCat.3171....0H
ADC_Keywords: MK spectral classification
Keywords: stars: spectral classification
Description (from B. Skiff):
MK spectral classifications are given for 1051 mainly F- and G-type
stars between mag 5.0 and 7.5. The types were determined from slit
spectrograms using the 36-inch refractor at Lick Observatory. The
prismatic dispersion was 75Å/mm at H-gamma, widened 0.6mm, on Kodak
IIa-O plates. The results published in four papers between 1969 and
1981 are combined here.
The original tables contained HD numbers, approximate coordinates, and
magnitudes, along with the new types and HD types. Some notes were
included. In this file the positions have been replaced with precise
coordinates from Tycho-2 or Hipparcos-related catalogues for epoch and
equinox J2000, and more accurate V magnitudes substituted. The HD
types are omitted. Component designations for multiple stars have been
carefully considered and sometimes put on separate lines. Additional
descriptive remarks are added to Harlan's notes, mainly remarking on
double stars and stars with significant proper motion.
The spectral types are also included in B. Skiff's "Catalogue of
Stellar Spectral Classifications" (B/mk).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
paper1.dat 83 311 MK classification in paper I (1969AJ.....74..916H 1969AJ.....74..916H)
paper2.dat 83 166 MK classification in paper II (1970AJ.....75..507H 1970AJ.....75..507H)
paper3.dat 83 462 MK classification in paper III (1974AJ.....79..682H 1974AJ.....79..682H)
paper4.dat 83 112 MK classification in paper IV (1981AJ.....86.1896H 1981AJ.....86.1896H)
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See also:
B/mk : Catalogue of Stellar Spectral Classifications (Skiff, 2012)
Byte-by-byte Description of file: paper*.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name Star name (HD number or other)
16- 17 I2 h RAh Right Ascension (J2000) hour
19- 20 I2 min RAm Right Ascension (J2000) minute
22- 26 F5.2 s RAs Right Ascension (J2000) second
28 A1 --- DE- Declination sign
29- 30 I2 deg DEd Declination (J2000) degree
32- 33 I2 arcmin DEm Declination (J2000) minute
35- 38 F4.1 arcsec DEs Declination (J2000) second
41- 43 F3.1 mag Vmag V magnitude
46- 58 A13 --- SpType MK spectral type
63- 83 A21 --- Remarks Comments (from author and B. Skiff)
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History:
Prepared by B. Skiff (Lowell Obs.)
(End) Francois Ochsenbein [CDS] 28-Jun-2005