Access to Astronomical Catalogues

II/2B       Two-Micron Sky Survey (TMSS)           (Neugebauer+ 1969)
The Two-Micron Sky Survey
    Neugebauer G., Leighton R.B.
   <NASA SP-3047 (1969)>
   =1969IRC...C......0N
   =1969QB6.N47........
ADC_Keywords: Photometry, infrared; Surveys


Description:
    The catalog, giving sources of emission in the 2.2-micrometer region
    for more than 5000 stars, represents a systematic survey of the
    Northern Hemisphere for stars brighter than third magnitude. The
    survey was carried out with a telescope at Mount Wilson, California,
    having a 62-inch diameter and an f/l aluminized epoxy mirror mounted
    equatorially. Radiation at an effective wavelength of 2.2 micrometers
    was detected by a lead sulfide photoconductive cell cooled by liquid
    nitrogen. In addition to the 2.2-micrometer detector array, radiation
    at an effective wavelength of 0.84 micrometers was detected by a
    simple silicon photovoltaic cell. The catalog includes right ascension
    and declination (B1950.0), K and I magnitudes, number of measurements,
    V magnitude, spectral types, cross identifications to the numbering
    systems of the General Catalogue, the Durchmusterung catalogs, the
    Bright Star Catalogue, and star names.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
catalog.dat      164     5612   Catalog Data
chisq.dat         36     2574   Chi-square Excess
remarks.dat       78      140   Remarks


See also:
  II/94 : The Revised AFGL Sky Survey Catalog and Supplement (Price+ 1983)
 II/216 : Catalog of Infrared Observations, Edition 4 (CIO) (Gezari+ 1997)


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

   Bytes Format  Units    Label   Explanations

   1-  6  I6     ---      IRC    *Two-Micron Sky Survey number (TMSS)
       7  I1     ---      n_IRC   [0,1] '1' if a remark exists in remarks.dat
   8-  9  I2     h        RAh     Right ascension 1950 (hours)
  11- 12  I2     min      RAm     Right ascension 1950 (minutes)
  14- 15  I2     s        RAs     Right ascension 1950 (seconds)
      17  A1     ---      DE-     Sign of declination
  18- 19  I2     deg      DEd     Declination 1950 (degrees)
  21- 24  F4.1   arcmin   DEm     Declination 1950 (arc minutes)
  25- 27  I3     s        e_RAs   Right ascension 1950 uncertainty
  28- 32  F5.2   ---      2_RAs   Right ascension chi-square
  33- 35  F3.1   arcmin   e_DEm   Declination 1950 uncertainty
  36- 39  F4.1   ---      2_DEm   Declination chi-square
  41- 45  F5.2   mag      Kmag    K magnitude  (ignore if Scale = 3 or 4)
  47- 50  F4.2   mag      e_Kmag  K error      (ignore if Scale = 3 or 4)
  51- 55  F5.2   ---      2_Kmag  K chi-square (ignore if Scale = 3 or 4)
  57- 61  F5.2   mag      Imag   *I magnitude
  63- 66  F4.2   mag      e_Imag *I error
  67- 71  F5.2   ---      2_Imag *I chi-square
      73  I1     ---      n_Imag *[0,1] I magnitude questionable
      75  I1     ---      Exc    *[1-4] I and K chi-square excess flags
      76  I1     ---      Scale  *[1-4] I and K scale flags
  77- 78  I2     ct       o_Kmag  Number of K measurements
  79- 80  I2     ct       o_Imag  Number of I measurements
      81  I1     ---      KIflag *[0,1] Remark on K and I counts
  82- 91  I10    ---      tTable *Observational timetable
  94- 98  F5.2   mag      Vmag    ? V magnitude
 100-102  A3     ---      SpT     Spectral (temperature) class
     105  I1     ---      Lum    *[2-8]? Luminosity class
 107-110  I4     ---      HR     *? HR/BS (see Cat. <V/50>) number
 112-116  I5     ---      GC     *? GC (Cat. <I/113>) number
 118-127  A10    ---      DM     *DM (BD, CD, CPD) number
 129-136  A8     ---      GCVS   *Variable Star name
 139-141  I3     s        dRA    *[]? RA difference with counterpart
 143-146  F4.1   arcmin   dDE    *[]? Declination difference with counterpart
 147-155  F9.5   rad      RAdit   Right ascension 1950 (radians)
 156-164  F9.5   rad      DEdit   Declination 1950 (radians)

Note on IRC:
  This number is made from the declination strip (of 10 ° wide)
  followed by a sequential number in the strip. The repartition in
  declination of the catalogue is as follows:
      ------------------------------------------------------
      Declination Zones (degrees)   Sequential Record Number
      ------------------------------------------------------
       -30:    -33 to -25                 1-472
       -20:    -25 to -15              473-1116
       -10:    -15 to - 5             1117-1725
       +00:    - 5 to + 5             1726-2262
       +10:    + 5 to +15             2263-2807
       +20:    +15 to +25             2808-3365
       +30:    +25 to +35             3366-3887
       +40:    +35 to +45             3888-4435
       +50:    +45 to +55             4436-4919
       +60:    +55 to +65             4920-5353
       +70:    +65 to +75             5354-5555
       +80:    +75 to +81             5556-5612
      ------------------------------------------------------
Note on Imag:
   Ignore if I magnitude > 14.0 and/or ignore if Scale (byte 76) = 2 or 4.
Note on e_Imag, 2_Imag:
   Ignore if I magnitude > 14.0 and/or ignore if n_Imag (byte 73) = 1
   and/or ignore if Scale (byte 76) = 2 or 4.
Note on n_Imag:
   1 = I magnitude is questionable; 0 otherwise
Note on Exc:
   1 = chi-square is not excessive
   2 = I chi-square is excessive
   3 = K chi-square is excessive
   4 = I and K chi-square are excessive
   Individual observations are in file chisq.dat when Exc differs from 1.
Note on Scale:
   1 = I and K both on scale
   2 = I off scale
   3 = K off scale
   4 = both I and K off scale
Note on KIflag:
   1 = there is a remark; 0 otherwise
Note on tTable:
   Range of days on which observations were made starting with
   January 30, 1965, and running through April 7, 1968.
Note on Lum:
   2 = luminosity class I and II
   3 = luminosity class III
   4 = luminosity class IV
   5 = luminosity class V
   6 = luminosity class c (supergiant)
   7 = luminosity class g (giant)
   8 = luminosity class d (dwarf)
Note on HR:
   The HR/BS number is provided if identified in the Yale Catalog
   of Bright Stars, Third edition (1964).
Note on GC:
   The GC number is provided if identified in the Boss General
   Catalog of 33342 Stars for the Epoch 1950 (1937; Cat. I/113).
Note on DM:
   The DM number is provided if identified in the Smithsonian
   Astrophysical Observatory (SAO) Star Catalog (1966; Cat. I/131).
Note on GCVS:
   The star name is provided if identified in the General Catalog
   of Variable Stars, Volumes 1 and 2 (1958).
Note on dRA, dDE:
   These are the position differences, infrared catalog-SAO Star Catalog or,
   if no SAO identification is available, the position difference, infrared
   catalog-variable star catalog.


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

   Bytes Format  Units  Label   Explanations

   1-  6  I6     ---    IRC     Two-Micron Sky Survey number (TMSS)
   7-  8  I2     ---    o_IRC  *Total number of obs. of this star
  10- 14  F5.2   mag    Kmag    K magnitude of star
  15- 18  F4.2   mag    e_Kmag  Standard deviation of K magnitude
  19- 23  F5.2   mag    Imag   *I magnitude of star
  24- 27  F4.2   mag    e_Imag *Standard deviation of I magnitude
      28  I1     ---    f_Imag *[0,1] I magnitude questionable
  30- 36  I7     d      JD      Julian date of observation

Note on o_IRC:
   This number is repeated in each record containing data for this star.
Note on Imag:
   Ignore if I magnitude > 14.0.
Note on e_Imag:
   Ignore if I magnitude > 14.0 or if f_Imag (byte 28) = 1.
Note on f_Imag:
   1 = I magnitude is questionable; 0 otherwise
   If f_Imag is 1, then the standard deviation given in bytes 24-27
   should be ignored.


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

   Bytes Format  Units  Label    Explanations

   1-  6  I6     ---    IRC      Two-Micron Sky Survey number (TMSS)
   9- 78  A70    ---    Text     Text of remark


History:
 * July 1979, by Theresa A. Nagy:
   The Two-Micron Sky Survey Catalogue by G. Neugebauer and R. B. Leighton
      was published in 1969 as a National Aeronautics and Space
      Administration (NASA) special publication (NASA SP-3047).
   A computer program was written to perform the following operations on
      the original version of the catalogue:
        - Convert all "&" to "+"
        - Concatenate left- and right-hand pages into a single data record
            per entry
        - Delete catalogue number from the right-hand page data
        - Add a sequential counter for each record
        - Combine all entries from 12 original files into a single file
            for data in catalogue
        - Combine all measurements of chi-square excess stars from the
            12 original files into a single sequential file
        - Compute and include right ascension and declination in radians at
            the end of each record in data file
        - Combine all remarks from the 12 original files into a single
            sequential file
        - Reblock main catalogue from 84 bytes to 17000
        - Change logical record length from 84 to 170 to accommodate
            re-organization
  * 27-Mar-1999, by Francois Ochsenbein [CDS]:
    the chisq.dat file, originally made of 1068 lines of up to 3 records
    per line, was rearranged as 2574 single-record lines.

Acknowledgements:
   The original ADC documentation (1991) by Theresa A. Nagy was used to
   create this ReadMe file.  She also did the original data reformatting.

References:
   Boss B. 1937, General Catalogue of 33342 Stars for the Epoch 1950,
      Carnegie Inst. of Washington (Cat. I/113)
   Hoffleit D. 1964, The Bright Star Catalogue, 3rd Revised Edition (New
      Haven, Yale University Observatory; see Cat. V/50)
   Johnson H.L., 1962, Astrophys. Journal, 135, 69.
      =1962ApJ...135...69J
   Johnson H.L., 1964, Boletin Tonantzintla y Tacubaya, 3, 305.
      =1964BOTT....3..305J
   Johnson H.L., Mitchell R.I., Iriarte B., Wisniewski W.Z., 1966,
      Comm. Lunar Planet. Lab., vol. 4, No. 63, 99.
      =1966CoLPL...4...99J, Cat. II/5
   Kron G.E., White H.S., Gascoigne S.C.B., 1953, Astrophys. Journal,
      118, 502  =1953ApJ...118..502K
   Kukarkin B.V., Parenago P.P., Efremov Y.U.I., Gol'opov P.N., 1958,
      General Catalog of Variable Stars, vols 1 and 2, Academy of
      Sciences of the U.S.S.R. (Moscow) (see Cat. II/139)
   Neugebauer G., Martz D.E., Leighton R.B., Astrophys. Journal, 1965,
      142, 399  =1965ApJ...142..399N
   Smithsonian Astrophysical Observatory Star Catalog, Smithsonian
      Institution, 1966 (see Cat. I/131)
   Ulrich B.T., Neugebauer G., McCammon D., Leighton R.B., Hughes E.E.,
      Becklin E., 1966, Astrophys. Journal, 146, 288.
      =1966ApJ...146..288U
(End) Melissa C. Larkin [SSDOO/ADC], rev. Francois Ochsenbein [CDS]  27-May-1997