III/223 12th General Catalogue of MK Spectral Classification (Buscombe+ 1995)
MK Spectral Classifications - Twelfth General Catalog
Buscombe W., Foster B.E.
<Northwestern University, Evanston Illinois (1995)>
=1995msct.book.....B 1995msct.book.....B
=2001yCat.3223....0B 2001yCat.3223....0B
ADC_Keywords: Spectral types ; Photometry, UBV
Description:
This is the twelfth in a series of catalogs of MK spectral types and
UBV photometry issued from Dearborn Observatory. It is based on an
extensive search of literature published up to early 1995. 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
mk12.dat 83 15401 Data for field stars
ic1805.dat 83 57 Data for IC1805
ngc1977.dat 83 268 Data for Orion trapezium
ngc3293.dat 83 41 Data for NGC 3293
ngc6087.dat 83 38 Data for NGC 6087
ngc6475.dat 83 161 Data for NGC 6475 (M 7)
ngc752.dat 83 125 Data for NGC 752
orion.dat 83 244 Data for Orion association
scooph.dat 83 168 Data for upper Sco and Oph assoc.
smc.dat 83 935 Data for Small Magellanic Cloud
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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/206 : 13th General Catalog of MK Spectral Classification (Buscombe 1998)
III/222 : 14th General Catalog of MK Spectral Classification (Buscombe 1999)
III/233 : Catalogue of Stellar Spectral Classifications (Skiff, 2003)
Byte-by-byte Description of file: *.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Star Identification for star
14- 15 I2 h RAh Right Ascension (J2000) hour
17- 20 F4.1 min RAm ?Right Ascension (J2000) minute
23 A1 --- DE- ?Declination sign
24- 25 I2 deg DEd ?Declination (J2000) degree
27- 28 I2 arcmin DEm ?Declination (J2000) minute
29 A1 --- u_DEm [: ] DEm uncertain
31 A1 --- f_SpType [(] Spectral type inferred from photometry
32- 52 A21 --- SpType MK spectral type
53 A1 --- r_SpType [* ] Asterisk = type from definers of MK
54 A1 --- f_Vmag [< ] Brackets mean average over cycle
55- 59 A5 mag Vmag ?Johnson V magnitude
60 A1 --- --- [> ] Brackets mean average over cycle
61 A1 --- f_B-V [< ] Brackets mean average over cycle
62- 66 F5.2 mag B-V ?B-V color
67 A1 --- --- [> ] Brackets mean average over cycle
68- 72 A5 mag U-B ?U-B color
74- 77 A4 --- Rem Questions
78- 83 A6 --- OName Alternate identification, usually HD
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History:
* 08-Apr-1997: Originally ingested as 3189A. (ADC)
* 05-Jul-2001: This was incorrectly listed as superseded by 3206, the
13th General Catalog of MK Classifications, in December 1998. It
was reingested with this revised ReadMe file under a new ID number
of 3223. (N. Odegard, ADC)
Acknowledgements:
Courtesy of William Buscombe, Dearborn Observatory
with computing assistance from Bruce E. Foster.
(End) Nancy G. Roman, N. Odegard [SSDOO/ADC] 05-Jul-2001