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:
FileName Lrecl Records Explanations
ReadMe 80 . This file mkext.dat 80 35997 The Catalogue refs.dat 108 403 The References
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
Bytes Format Units Label Explanations
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)
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) LF5 see McCuskey and Houk, (1964AJ.....69..412M) LFS see Smith, (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) RWT see reference#361 (1979AJ.....84..534C), 1971AJ.....76.1099R and 1974AJ.....79.1406R SW see reference#330 (1977A&AS...27..403S) W see reference#301 (1976A&AS...26...31W) WRA see reference#301 (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.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
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
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
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