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II/84               13-color photometry of 1380 bright stars  (Johnson+ 1975)
13-color Photometry of 1380 bright stars
     Johnson H.L., Mitchell R.I.
    <Rev. Mex. Astron. Astrofis. 1, 299 (1975)>
    =1975RMxAA...1..299J
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:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
catalog.dat      124     1380   The 13-color photometry (Table 7)


Definition of the filters:
    ----------------------------
    Filter  Effective Wavelength
             (Angstroems)
    ----------------------------
       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
    ----------------------------

Byte-by-byte Description of file: catalog.dat

   Bytes Format  Units   Label    Explanations

       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)

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:
    ------------------------------------------------------------------------
     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.


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. Brotzmann 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.
(End)                                     Francois Ochsenbein [CDS]  30-Aug-1995