III/78 MK Classification Extension (Kennedy, 1983)
MK Classification Catalogue Extension
Kennedy P.M.
<Mt Stromlo & Siding Spring Observatories, Australia (1983)>
ADC_Keywords: MK spectral classification
Description:
The catalog provides classifications on the Morgan-Keenan (MK) system
published in the literature since the appearance of the La Plata
catalog (Jaschek et al., 1964). In addition to the MK types, the
catalog contains, for REFERENCE PURPOSES ONLY, UBV photometry, some
component identifications for multiple systems, and miscellaneous
remarks, e.g., cluster membership, although this information is not
professed to be complete. A second file of the machine version
contains the bibliographical references cited in the data file and
indicates classifications done by objective-prism techniques (OP)
or from photometric studies (PHOT).
Note that extragalactic stars (e.g. in LMC, SMC) are not included.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
mkext.dat 80 35997 The Catalogue
refs.dat 108 403 The References
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See also:
III/18 : Stellar Spectra classified in the MK system (Jaschek+, 1963)
III/42 : Selected MK Spectral Types (Jaschek, 1978)
III/189 : General Catalogue of MK types (Buscombe, 1995)
Byte-by-byte Description of file: mkext.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Object identification (1)
14- 15 I2 h RAh ? Right Ascension B2000 (hours) (2)
17- 20 F4.1 min RAm ? Right Ascension B2000 (minutes) (2)
23 A1 --- DE- Declination B2000 (sign) (2)
24- 25 I2 deg DEd ? Declination B2000 (degrees) (2)
27- 28 I2 arcmin DEm ? Declination B2000 (minutes) (2)
31- 47 A17 --- SpType MK spectral type (3)
48- 50 I3 --- r_SpType [1/990]? Reference number for the MK type (4)
53- 58 F6.3 mag Vmag ? V magnitude as taken from the literature.
59 A1 --- n_Vmag [V:] V if V variable, : for uncertain
60- 64 F5.3 mag B-V ? B-V color. Plus signs are omitted.
65- 70 F6.3 mag U-B ? U-B color. Plus signs are omitted.
72- 74 I3 --- r_Vmag [1/990]? Reference number for photometry.
75- 80 A6 --- Rem Remarks. (5)
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Note (1): Entries are ordered in the catalog with the following priority:
HD numbers in ascending numerical order;
HDE numbers in ascending numerical order;
DM numbers in descending zone and increasing numerical order;
Other designations use the following acronyms:
BB see Bok & Basinski, Mem. Mt. Stromlo Obs No 16, 1964
BS see Stenholm (1975A&A....39..307S 1975A&A....39..307S)
LF5 see McCuskey and Houk, (1964AJ.....69..412M 1964AJ.....69..412M)
LFS see Smith, (1968MNRAS.138..109S 1968MNRAS.138..109S)
LS I Luminous Stars in the Northern Milky Way I , cat. III/76
LYNGA see Ark.f.Astr., 3, No.8
MCP McCormick Proper Motion Areas - McCormick Publs 7 and 10
MS see MacConnell & Sanduleak (1970PASP...82...80M 1970PASP...82...80M)
RWT see reference#361 (1979AJ.....84..534C 1979AJ.....84..534C),
1971AJ.....76.1099R 1971AJ.....76.1099R and 1974AJ.....79.1406R 1974AJ.....79.1406R
SW see reference#330 (1977A&AS...27..403S 1977A&AS...27..403S)
W see reference#301 (1976A&AS...26...31W 1976A&AS...26...31W)
WRA see reference#301 (1976A&AS...26...31W 1976A&AS...26...31W)
Note (2): the position may be very rough, or even missing.
Note (3): The W in Wolf-Rayet types will be found in byte 31,
as will a left parenthesis for uncertain types.
The temperature class is in byte 32, but other characters are
also there, e.g. P (peculiar), the D in Delta DEL types, etc.;
the temperature subclass is in bytes 34-36, but other
characters can be there too.
Bytes 37-43 contain luminosities, peculiarities, etc.
Note (4): Three stars have no reference for the spectral type:
HD 62318 (record#8104), HD 175253 (record#19457)
and HD 222872B (record#23441)
Note (5): Remarks can be component identification, variable-star names,
cluster membership, HDE numbers (6 digits), miscellaneous
identifications. Byte 80 contains an asterisk for stars
classified by Morgan and Keenan (1973) for the revised MK system.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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2- 4 I3 --- Ref [1/990]+ Reference number, as written in
columns r_SpType and r_Vmag of the catalog
(Note that refs, 315 and 800 are missing)
6- 29 A24 --- BibRef Bibliographic Reference
31- 49 A19 --- BibCode 19-digit bibcode
51- 57 A7 --- Instr List, or type of classification like
OP for objective-prism classification,
PHOT for photometric classification
60-108 A49 --- Auth Authors and Comments
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History:
* The machine-readable MK Classification Extension Catalogue,
version 1983 was received at CDS in 1983; a first documentation was
prepared at NASA/ADC by Wayne H. Warren.
* 23-Dec-1996: the catalogue was checked against catalogue standards
at CDS: several misalignments, missing decimal points, etc
were corrected.
* 05-Aug-2003: the list of references was checked and completed by Brian
Skiff (Lowell Obs.)
References:
Jaschek, C., Conde, H. and de Sierra, A.C. 1964, "Catalogue of
Stellar Spectra Classified in the Morgan-Keenan System",
Publ. La Plata Obs., Ser Astron. 28, No. 2. (CDS Cat. III/18)
Morgan, W.W. and Keenan, P.C. 1973, Annual Rev. Astron. Astrophys. 11, 29.
(End) Francois Ochsenbein [CDS] 23-Dec-1996