Astronomical Data Center
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/catalogs/2/2084/
The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:
II/84 13-color Photometry of 1380 Bright Stars (Johnson+ 1975)
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13-color Photometry of 1380 Bright Stars
Johnson H.L., Mitchell R.I.
<Rev. Mex. Astron. Astrofis. 1, 299 (1975)>
=1975RMxAA...1..299J
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ADC_Keywords: Photometry, 13-color ; Stars, bright
Description:
The catalogue contains observations of essentially all stars brighter
than fifth visual magnitude north of declination -20 degrees and
brighter than fourth visual magnitude south of declination -20
degrees, in the 13-color medium-narrow-band photometric system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 124 1380 The 13-color photometry (Table 7)
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Definition of the filters:
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Filter Effective Wavelength
(Angstroems)
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33 3371
35 3536
37 3751
40 4030
45 4571
52 5183
58 5827
63 6356
72 7241
80 8000
86 8584
99 9831
110 11084
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1 A1 --- Remark [*] '*' if remark (3)
2- 5 I4 --- HR [1/9110]+ Harvard Revised (Bright Star)
designation
6- 8 A3 --- Misc Miscellaneous info. re designation or
physical characteristics (1)
10- 26 A17 --- SpType Spectral type (2)
27 A1 --- n_52 [X] 'X' if 52 magnitude from Cape V magnitude
29- 34 F6.3 mag 52 Magnitude, filter 52
36- 41 F6.3 mag 33-52 33 - 52 color
43- 48 F6.3 mag 35-52 35 - 52 color
50- 55 F6.3 mag 37-52 37 - 52 color
57- 62 F6.3 mag 40-52 40 - 52 color
64- 69 F6.3 mag 45-52 45 - 52 color
71- 76 F6.3 mag 52-58 52 - 58 color
78- 83 F6.3 mag 52-63 52 - 63 color
85- 90 F6.3 mag 52-72 ? 52 - 72 color
92- 97 F6.3 mag 52-80 ? 52 - 80 color
99-104 F6.3 mag 52-86 ? 52 - 86 color
106-111 F6.3 mag 52-99 ? 52 - 99 color
113-118 F6.3 mag 52-110 ? 52 - 110 color
120-121 I2 --- Obs(Blue) Number of blue observations (filters 33 to 63)
123-124 I2 --- Obs(Red) Number of red observations (filters 72 to 110)
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Note (1): Miscellaneous information regarding identification or physical
characteristics; e.g. /X,/XX, -X for additional HR numbers included;
'V' or 'D' for variable or double star; '.' for uncertainty; '*' for 3
stars (HR4883, 6707, and 8143) but meaning is not defined in paper,
nor could any common peculiar characteristics be found.
Note (2): Luminosity class for Mt. Wilson types; W in W-R types.
Temperature class, subclass, and additional spectral-type information
are listed.
Note (3): Individual Notes:
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215 Zet And 58 filters differ by more than 0.10 mag
681 Omi Cet 39831.6 matched to 39151.6
1239 Lam Tau 39873.6 matched to 39440.8
1845 CE Tau 39831.8 matched to 39499.7
2061 Alp Ori 39797.9 matched to 38787.7
2308 BL Ori 39773.9 matched to 39501.8
2590 Pi CMa 58 filters differ by more than 0.10 mag. May be variable.
2650 Zet Gem 39804.9 matched to 38789.8
4163 U Hya 58 filters differ by more than 0.10 mag.
33 was not measurable, 33-52=12 is a lower limit.
4846 Gam CVn 39867.9 matched to 39176.9.
33 was not measurable, 33-52=12 is a lower limit.
4915 Alp2 CVn 39930.7 matched to 38894.7
5056 Alp Vir 39930.8 matched to 39176.9
5589 RR UMi 39910.9 matched to 39257.8
6146 g Her 39969.8 matched to 38929.7
6406 Alp Her 39973.7 matched to 39227.9
6431 Mu Her 58 filters differ by more than 0.10 mag.
7066 R Sct 39974.9 matched to 38917.8
7564 Chi Cyg 40004.9 matched to 40006.9 (unpublished data)
7570 Eta Aql 39976.9 matched to 38871.9
8262 W Cyg 58 filters differ by more than 0.10 mag.
8297 V460 Cyg 33 was not measurable, 33-52=12 is a lower limit.
8316 Mu Cep 58 filters differ by more than 0.10 mag.
8383 VV Cep 58 filters differ by more than 0.10 mag.
8571 Del Cep 39278.8 matched to 39459.6
8752 HD 217476 58 filters differ by more than 0.10 mag.
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References:
Hoffleit, D. (1964). Catalogue of Bright Stars, 3rd edition (Yale
University Observatory). (Catalogue: V/50)
Houk, N. (1978). Michigan Catalogue of Two-Dimensional Spectral Types
for the HD Stars, Volume 2 (Department of Astronomy, Univ. Michigan,
Ann Arbor). (Catalogue: III/51B)
Houk, N. and Cowley, A. P. (1975). University of Michigan Catalogue of
Two-Dimensional Spectral Types for the HD Stars, Volume 1 (Department
of Astronomy, Univ. Michigan, Ann Arbor). (Catalogue: III/31B)
Jaschek, M. (1978). Catalogue of Selected Spectral Types in the MK
System, Bull. Inf. Cent. Donnees Stellaires, No. 15, p. 121.
(Catalogue: III/42)
Kennedy, P. M. (1978). MK Classification Extension (Mt. Stromlo Obs.)
(Catalogue: III/78)
Morgan, W. W., and Keenan, P. C. (1973). Annu. Rev. Astron. Astrophys.
11, 29
Historical Notes:
* March 1981, by Wayne H. Warren Jr. and Nancy G. Roman at NASA/ADC
(document NSSDC/WDC-A-R&S 81-02):
"A magnetic tape version of the Thirteen-Color Photometry of 1380
Bright Stars was received from the Centre de Donnees Stellaires (CDS),
Strasbourg (Identification Number 2052A78). As received, the spectral
types had no uniformly coded fields for searching purposes, and no
flags were included in the records to indicate remarks. In order to
improve the uniformity of the spectral types, the entire catalogue was
transferred from tape to disk at the Astronomical Data Center, and
modifications were made interactively. The spectral types were
modified such that the temperature class and subclass always occur in
bytes 12 and 13, respectively. Mt. Wilson luminosity codes (g, d, sg,
c, etc.) were shifted to occur uniformly in bytes 10-11, as was the W
in each Wolf-Rayet type. Characters which are lower case in standard
astronomical notation (e.g., Mt. Wilson luminosity codes, m and p in
peculiar and metallic-line A stars, a, b, ab in luminosity classes, e
for emission-line stars, etc.) were converted from upper to lower
case. These characters should print as normal upper-case characters on
conventional upper-case-only printers, but the use of an extended
chain printer is suggested if one is available. The asterisks were
also added as the remarks flag in byte 1 and the catalogue was
transferred back to magnetic tape.
A considerable number of stars had no MK types in the catalogue as
received. When available, these types were added from the catalogues
of M. Jaschek (1978), Kennedy (1978) and Morgan and Keenan (1973).
Additional MK types were found for stars south of -40 degrees in Houk
and Cowley (1975) and Houk (1978). Where possible, attempts were made
to resolve uncertainties and to correct obvious errors.
The order of the files (by HR number) is unchanged from the published
catalogue (Johnson and Mitchell 1975), but they do differ slightly in
that the star names present in the published catalogue (Table 7) have
never been present on the disk."
* October 1991: prepared by Lee E. Brotzman as files on the
"Selected Astronomical Catalogs" Vol. 1 CD-ROM (1992), directory
/photom/13color
* 30-Aug-1995: documentation from CD-ROM standardized at CDS; the SpType
column has been enlarged to accommodate composite spectral types.
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(End) Francois Ochsenbein [CDS] 30-Aug-1995
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