Access to Astronomical Catalogues

III/40A       Spectral Survey of Southern Milky Way        (Loden+ 1976)
A Spectral Survey of the Southern Milky Way
I.   General Description and Catalogue I. l = 306deg to 318deg
     Sundman A., Loden L.O., Nordstroem B.
    <Astron. Astrophys. Suppl., 16, 445 (1974)>
    =1974A&AS...16..445S
II.  O-B5 Stars. l = 237deg to 281deg
     Nordstroem B.
    <Astron. Astrophys. Suppl., 21, 193 (1975)>
    =1975A&AS...21..193N
III. O-B9 and M Stars.  l = 280deg to 306deg
     Loden L.O., Loden K., Nordstroem B., Sundman A.
    <Astron. Astrophys. Suppl., 23, 283 (1976)>
    =1976A&AS...23..283L
ADC_Keywords: Milky Way ; Surveys ; Spectral types


Description:
    The spectral survey, carried out at the Stockholm Observatory, was
    initiated by B. Lindblad. The observational material was obtained by
    L.O. Loden, K. Loden and others in the years 1956-1965, when the
    Stockholm Observatory took part in a joint enterprise for using the
    Harvard-Boyden station. The Swedish Natural Science Research Council,
    the Royal Academy of the Sciences, and the K. and A. Wallenberg
    Foundation funded the observations, which are based on both direct and
    objective prism plates. The data were published in three parts, the
    first having less precise positions than the others. The coordinates
    for Catalogue I (3033) were later recomputed with the same reduction
    procedure as Catalogues II (3034) and III (3035), making the present
    catalogue uniform (Andersen, 1977). The files include star
    identification, finding chart identification, RA and Dec, galactic
    longitude and latitude, spectral type, blue magnitude, visual
    magnitude and remarks.

    The data concerning the part 2 were revised by Brian Skiff in November
    1996 (see the "History" section below)

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
data1.dat         80     2969   Part I    Sundman+   (1974A&AS...16..445S)
data2.dat         80      562   Part II   Nordstroem (1975A&AS...21..193N)
n75.dat           80      562   Part II   Revised by B. Skiff (see "History")
data3.dat         80     9728   Part III  Loden+     (1976A&AS...23..283L)
notes.dat         80       43   Notes to n75.dat


Byte-by-byte Description of file: data?.dat

   Bytes Format  Units   Label    Explanations

   1-  2  I2     h       RAh      Right Ascension (1950.0) hours
   4-  7  F4.1   min     RAm      Right Ascension (1950.0) minutes
       9  A1     ---     DE-      Declination (1950.0) sign
  10- 11  I2     deg     DEd      Declination (1950.0) degrees
  13- 14  I2     arcmin  DEm      Declination (1950.0) arcminutes
      15  A1     ---     u_DEm    Uncertainty flag for coordinates
  17- 24  A8     ---     ID       Identification (HD, HDE or DM)
  26- 27  I2     ---     Chart    [1/18]? Chart number (data2 only)
  29- 33  I5     ---     CatNum   Catalogue number (reference to finding charts)
      34  A1     ---    m_CatNum  [A] Catalogue number suffix
  36- 40  F5.2   mag     m(B)     ? Blue magnitude
      41  A1     ---     u_m(B)   Uncertainty flag for m(B)
  43- 51  A9     ---     Sp      *Spectral type
  53- 61  A9     ---     Rem     *Remarks
  63- 68  F6.2   deg     GLON     Galactic longitude
  70- 74  F5.2   deg     GLAT     Galactic latitude
  76- 79  F4.1   mag     Vmag     ? Visual magnitude (data1 only)
      80  A1     ---     u_Vmag   Uncertainty flag for Vmag

Note on Sp: Spectral type, left-justified.
   A colon following the spectral type (not aligned) indicates
     an uncertain spectral type or luminosity is given in rem
Note on Rem: Remarks, left-justified. The following codes are used:
     O          = overexposed
     U          = underexposed
     ID         = uncertain identification
     ST         = photoelectric standard
     VAR(?)     = Variable (possibly var.)
     E          = emission
     K (?)      = Interstellar K line (possibly) visible
     N (NN)     = Diffuse (very diffuse) lines
     SB ?       = possibly spectroscopic binary
     I - V      = luminosity classes
     WD         = probably white dwarf
     *          = see special remark in printed catalogue


Byte-by-byte Description of file: n75.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     [N75]     [1/568]+ Running number
   6-  7  I2    h       RAh       Right Ascension J2000 (hours)
   9- 10  I2    min     RAm       Right Ascension J2000 (minutes)
  12- 15  F4.1  s       RAs       Right Ascension J2000 (seconds)
      17  A1    ---     DE-       Declination J2000 (sign)
  18- 19  I2    deg     DEd       Declination J2000 (degrees)
  21- 22  I2    arcmin  DEm       Declination J2000 (minutes)
  24- 25  I2    arcsec  DEs       Declination J2000 (seconds)
      27  A1    ---    posSource *[CGNPU] Source of position
  30- 41  A12   ---     Name      Identification of the star in DM and HD
  43- 44  I2    ---     Chart     [1/18] Chart number
  47- 51  F5.2  mag     Bmag      ? Blue magnitude
      52  A1    ---     u_Bmag    Uncertainty flag on Bmag
  54- 63  A10   --      SpType    Spectral type
      65  A1    ---     NoteFlag  [*] an additional note exists in notes.dat
  66- 80  A15   ---     Note     *Additional notes and identifications (2)

Note on posSource: the position sources are:
     C = Carlsberg Meridian Catalogues
         (I/147, I/170, I/189, I/205, I/213)
     G = GSC (Guide Star Catalogue) I/220
     N = Nesterov (HDE stars, cat. III/182)
     P = PPM (catalogues I/146, I/193, I/208)
     U = USNO A0.9 catalogue
Note (2): Nordstroem comment codes are:
     D = overlapped spectrum
     K = interstellar K line visible
     U = underexposed
     O = overexposed


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

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     [N75]     [1/568]+= Running number as in n75.dat
       4  A1    ---     Cont      [a] Continuation symbol
   6- 80  A75   ---     Text      Text of note


Acknowledgements:
    Thanks are due to Dr Johannes Andersen, who provided the data
    on magnetic tape to Dr Carlos Jaschek (CDS) as early as
    January 1977.
    The first version of this description file was done by
    Julie Anne Watko [SSDOO/ADC] in August 1996.

History:
  * November 1996: addition of the file n75.dat, a revision of data2.dat,
    was prepared by Brian Skiff .
    The positions, magnitudes, cross-identifications and notes have been
    improved as follows:
    - the GSC (Guide Star Catalogue version 1.1) was used to derive a
      position, by a comparison with the published charts; a few problem
      cases were checked against the digitized sky survey; positions were
      then improved with the PPM catalogues (I/193 and I/208)
    - SIMBAD was searched around each position for cross-identifications
      (resulting also in SIMBAD fixes). The printed versions from Goddard
      of Durchmusterungen CoD I/114 and CPD I/108 were then searched
      for additional IDs by comparing positions and charts.
    - the Mermilliod's Lausanne photometric database was used to improve
      the B magnitudes.
    - the comments have been added.

References:
   I.   Sundman A., Loden L.O. & Nordstroem B. 1974, Astron. Astrophys.
        Suppl. 16, 455. ADC Cat 3033 (1974A&AS...16..445S)
   II.  Nordstroem B. 1975, Astron. Astrophys. Suppl. 21, 193. ADC Cat 3034.
        (1975A&AS...21..193N)
   III. Loden L.O., Loden K., Nordstroem B. & Sundman A. 1976 Astron.
        Astrophys.  Suppl. 23, 283. ADC Cat 3035. (1976A&AS...23..283L)
   Andersen J. 1977, A Uniform Edition of the Stockholm Southern Milky
        Way Survey, Astron. Astrophys. Suppl. 29, 257. (1977A&AS...29..257A)
(End)  Francois Ochsenbein [CDS], Brian Skiff [Lowell Obs.]          26-Nov-1996