III/228 4th General Catalogue of MK Spectral Classification (Buscombe 1980)
MK spectral classifications, Fourth General Catalogue
Buscombe W.
<Northwestern Univ., Evanston, Illinois ISBN: 0939160021 (1980)>
=1980mscf.book.....B 1980mscf.book.....B
=2001yCat.3228....0B 2001yCat.3228....0B
ADC_Keywords: Spectral types ; Photometry, UBV
Description:
This is the fourth in a series of catalogs of MK spectral types and UBV
photometry issued from Dearborn Observatory. It is based on an extensive
literature search. Each catalog is essentially self-contained, with its
separate selection of stars listed in order of increasing right ascension.
Some classifications (indicated between parentheses) are inferred from
photometric or astrometric considerations. The preferred identification
is from the Henry Draper Catalog or the General Catalog of Variable Stars,
with a Durchmusterung or other alternative as space permits.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
mk4.dat 80 17181 The 4th General Catalogue
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See also:
III/52 : 3rd General Catalogue of MK Spectral Classification (Buscombe 1977)
III/189 : 7th-11th Catalogues of MK Spectral Classification (Buscombe+ 1994)
III/223 : 12th General Catalog of MK Spectral Classification (Buscombe+ 1995)
III/206 : 13th General Catalog of MK Spectral Classification (Buscombe 1998)
III/222 : 14th General Catalog of MK Spectral Classification (Buscombe 1999)
III/225 : 15th General Catalog of MK Spectral Classification (Buscombe 2001)
Byte-by-byte Description of file: mk4.dat
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Bytes Format Units Label Explanations
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1 A1 --- m_Id ? Multiplicity of star (1)
2- 11 A10 --- Id ? Identification for star (1)
14- 15 I2 h RAh Right Ascension (2000) hour
17- 20 F4.1 min RAm ? Right Ascension (2000) minute
21 A1 --- u_RAm [:] uncertain, tenths digit is not listed or
entire RAm field is not listed
23 A1 --- DE- Declination sign
24- 25 I2 deg DEd Declination (2000) degree
27- 28 I2 arcmin DEm ? Declination (2000) minute
30- 51 A22 --- SpType MK type (2)
52 A1 --- n_SpType [*] '*' for a standard
53- 58 F6.3 mag Vmag ? Johnson V magnitude
59- 63 F5.2 mag B-V ? Johnson B-V color
65- 69 F5.2 mag U-B ? Johnson U-B color
74- 80 A7 --- Name Alternate identification, usually HD (1)
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Note (1): The alphabetical letters starting at byte 1 (column 1 of Id)
refer to the components of multiple systems included in SpType, while
those at byte 76 (column 2 of Name) indicate which were included in
the photometry.
Note (2): A colon denotes uncertainty, parentheses denote an inferred
assignment. Prefixes are:
'D': white dwarfs.
'SD': subdwarfs.
'WL': metal poverty compared to solar composition:
'WLS': -0.3 > [Fe/H] > -0.9
'WLM': -0.9 > [Fe/H] > -1.5
'WLE': -1.5 > [Fe/H]
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Remarks:
ADC received electronic data files for this catalog from William Buscombe
in February 1999. Some corrections were provided by Dr. Buscombe in May
2001 and November 2001, based on recommendations from S. Nishimura of
Japan's Astronomical Data Analysis Center. These corrections have been
made to the ADC version of the catalog.
Acknowledgements:
Courtesy of William Buscombe, Dearborn Observatory
with computing assistance from Bruce E. Foster.
(End) N. Odegard [SSDOO/ADC] 26-Nov-2001