III/42 Selected MK Spectral Types (Jaschek, 1978)
Catalogue of selected spectral types in the MK system
Jaschek M.
<Bull. Inform. CDS 15, 121 (1978)>
=1978BICDS..15..121J 1978BICDS..15..121J
ADC_Keywords: MK spectral classification ; Spectral types
Description:
The catalog provides a single spectral type for each star listed in
the La Plata catalog (Jaschek, Conde and de Sierra 1964; catalog
III/18) and in the MK Extension (Kennedy 1978; see catalog
III/78). In all cases the classifications are selected from those in
the literature and have not been made by the author specifically for
this compilation. A selected classification is considered to be the
best one but is not necessarily a good one. If only one classification
exists for a given object, it is given, regardless of its quality.
The classifications were selected using a weighting system, with
highest weight being given to classifications made by Morgan and/or
Keenan, somewhat lower weight to those made by other spectral
classification experts and various lower weights to those made by
other workers. Classifications using designations that do not appear
in the MK system have been excluded, as have objective-prism
classifications, except where no slit spectra were available.
The catalog contains a running number in one of the original catalogs
(sequential numbers in the machine versions), identification of the
original catalog, star identification (HD, DM, miscellaneous
designations), equatorial coordinates (B1900), magnitude, V if
available, m(v) otherwise) for reference purposes, reference number in
the original catalog, selected classification, dispersion information,
and standardized reference.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 114 30361 The catalog of Selected MK Types
refs.dat 120 1029 The References
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See also:
J/AJ/106/2291 : UBV photometry toward Galactic Center (Reed 1993)
J/PASP/105/1465 : Distant OB Stars in the Galaxy (Reed 1993)
J/ApJS/87/367 : UBV-beta database for LS stars (Reed, 1993)
J/ApJS/97/189 : Database for Stephenson-Sanduleak Stars (Reed+ 1995)
J/A+AS/117/313 : LSS stars Stroemgren photometry (Reed, 1996)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Number Running number in one of the original
catalogues
7 A1 --- cat *[JK] Original catalogue: J or K
9- 19 A11 --- Name Identification of the star (generally
HD or DM number)
22- 23 I2 h RAh Right Ascension 1900 (hours)
25- 28 F4.1 min RAm Right Ascension 1900 (minutes)
30 A1 --- DE- Declination 1900 (sign)
31- 32 I2 deg DEd Declination 1900 (degrees)
34- 35 I2 arcmin DEm Declination 1900 (minutes)
38- 42 F5.2 mag Vmag *? V magnitude
43 A1 --- n_Vmag [V] 'V' for variability
45- 48 A4 --- MK Source and ID of available MK types
50- 52 I3 --- Ref Reference number in the original catalogue
54- 77 A24 --- SpType Selected MK spectral classification
79- 84 A6 10-7 Disp *Dispersion used (in Angstroem/mm at Hγ)
for the selected classification and system
85 A1 --- q_SpType [A-D] Quelity of the classification, A=best
87- 94 A8 --- RefCode Bibliographical coded Number, used for
the BSI (Spite et al., 1980)
96-114 A19 --- BibCode Standardized bibliographical code
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Note on cat:
J = La Plata Catalog of Stellar Spectra Classified in the
MK System, by Jaschek et al. (1964, catalog III/18)
K = MK Classification Extension by Kennedy P.M. (kept up-to-date;
latest version available is III/78)
Note on Vmag:
The value 99.99 = nebular? (Star #3542)
Note on Disp:
The dispersion is followed by the dispersice system used:
OP = Objective Prism ; P = Prism ; G = Grating
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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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1- 8 A8 --- RefCode [.0-9] Bibliographical Reference Code
(repeated if several lines)
9-120 A112 --- Text Text of Reference
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Historical Notes:
The original version, as prepared by the author at CDS in 1978,
contained vertical bars as separators, and a few control characters.
There were removed at ADC, and the standardized BibCode, as used by
SIMBAD, was added at CDS in 1996.
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 (2)
Kennedy P.M. 1978, MK Classification Extension, Mt. Stromlo Observatory
Spite F., Kirchner S., Lahmek R., and Ochsenbein F. 1980, Bull. Inform.
CDS No. 18, p. 89
(End) Julie Anne Watko [SSDOO/ADC], Francois Ochsenbein [CDS] 11-May-1996