ACDS V10.0 - Detailed Description of VII/172

ACDS V10.0 - Mon Jan 20 02:31:53 CET 2025

| # Detailed Description of VII/172 : First Byurakan Survey (FBS) (Markarian+, 1989) |

Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.

    VII/172            First Byurakan Survey (FBS)    (Markarian+, 1989)
    ================================================================================
    The First Byurakan Survey. A catalogue of galaxies with UV-continuum
         Markarian B.E., Lipovetsky V.A., Stepanian J.A., Erastova L.K.,
         Shapovalova A.I.
        <Comm. SAO (USSR) 62 (1989)>
        =1989SoSAO..62....5M
    ================================================================================
    ADC_Keywords: Galaxies, Markarian; Galaxies, UV-excess

    Abstract:
       A Catalogue of galaxies with UV-continuum (Markarian galaxies) detected
       during the First Byurakan Survey (FBS) is presented. The purpose of the
       Survey was to search for peculiar faint extragalactic objects with
       UV-excess radiation and to study them. The procedure of observations
       and processings, the Survey areas, the object selection and
       classification criteria and also several selection effects are
       described. The Catalogue contains the following initial data on all
       the objects: the precise coordinates, visual magnitudes, angular
       sizes, redshifts and classification types. The observational results
       of slit spectra, UBV-photometry, IR-photometry (IRAS data), morphology
       and some other data are also included into the Catalogue. While
       compiling the Catalogue the authors introduced some necessary
       corrections in the data of the earlier published lists on galaxies
       with UV-continuum. In addition we included the objects with
       numbers 1501-1515. In most cases they are well-known Seyfert galaxies
       omitted by the authors in the lists, but detected on the plates.
       41 objects from our lists are not included into the Catalogue, since
       they are either stars of our Galaxy or star projections on the
       galaxies. The Catalogue presents the largest homogeneous sample of
       AGN of different types on the northern sky for bright objects (<16.0).
       Up to the middle of 1987 the redshifts were measured for 1459 out of
       1469 objects of the Catalogue.

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × descrip.doc       76     1177   Description of the FBS
    × table7.dat       140     1469   The FBS Catalogue of Markarian galaxies
    × notes.dat         90       39  *Comments on table7
    × table6.dat        69       48  *Deleted Survey objects
    × table8.dat        62      818   Common names
    × table9.dat        20     1549   Finding list of common names
    × table10.dat       13     1517   FBS objects by number
    × refs.dat          80      195   Reference codes

    Note on table6: Mrk514 added by H.Andernach, Mar 92

    Note on notes.dat: The data on Markarian galaxy components, which are
       also galaxies with UV-continuum and which are described in original
       lists as two objects with one and the same number, are presented
       in this file. As a rule, the second component has a weaker
       UV-continuum and is weaker itself.

    Byte-by-byte Description of file:  table7.dat

       Bytes Format  Units   Label    Explanations

       1-  4  I4     ---     Mrk      [1/1515]+ Markarian designation number
       7-  8  I2     h       RAh      Right ascension 1950.0
      10- 11  I2     min     RAm      Right ascension 1950.0
      13- 16  F4.1   s       RAs      Right ascension 1950.0
          19  A1     ---     DE-      Declination sign
      20- 21  I2     deg     DEd      Declination 1950.0
      23- 24  I2     arcmin  DEm      Declination 1950.0
      26- 27  I2     arcsec  DEs      Declination 1950.0
      31- 36  F6.4   ---     z0       []? Redshifht corrected for Galaxy rotation
                                       (the rotation constant is Q=300km/s)
      40- 43  F4.1   mag     Mag      Apparent magnitude from the CGCG
          44  A1     ---     n_Mag    [*] An '*' indicates that there were no value
                                       in CGCG and that the magnitude given is the
                                       original estimates of the authors
      47- 51  F5.1   mag     Mabs     []? Absolute magnitude
      54- 58  A5     ---     Sp       Spectral type
      59- 61  I3     arcsec  MajDiam  []? Major axis diameter
          62  A1     ---   n_MajDiam  Multiplicative symbol for angular size
      63- 64  I2     arcsec  MinDiam  []? Minor axis diameter
      67- 69  I3     ---     r_z0     []? Redshift reference (See "refs" file)
          70  A1     ---     n_Mrk    [*] A '*' indicates the double object having
                                       the same number in the original list; there
                                       is more detailed information about the second
                                       component in the "notes.dat" file
      72- 79  A8     ---     MType    Morphological type. In some cases, the
                                       description "dbl" is used for close binaries
      80- 84  A5     ---     Stype    Spectrum type (1)
      86- 88  I3     arcsec  Ddia     []? Diaphragm size. When the are several
                                       diaphragms, the largest one is presented
      91- 95  F5.2   mag     Vmag     []? Vmagnitude
      98-101  F4.2   mag     B-V      []? B-V colour index
     103-107  F5.2   mag     U-B      []? U-B colour index
     109-111  I3     ---     r_Vmag   []? References for UBV photometry
                                           (See "refs" file)
         113  A1     ---     Var      [v] A 'v' indicates optical variability
     115-118  F4.2   Jy      F12um    []? IRAS flux at 12 µm (2)
         120  A1     ---     l_F25um  [<] Limit flag on F25um
     121-125  F5.2   Jy      F25um    []? IRAS flux at 25 µm (2)
         126  A1     ---     l_F60um  [<] Limit flag on F60um
     127-132  F6.2   Jy      F60um    []? IRAS flux at 60 µm (2)
         134  A1     ---    l_F100um  [<] Limit flag on F100um
     135-140  F6.2   Jy      F100um   []? IRAS flux at 100 µm (2)

    Note (1): Spectrum type:
                Sy1-Sy2 - Sy galaxy of the corresponding type
                Sy3     - LINER
                QSO     - quasar
                BL      - lacertides
                SB      - star-burst galaxies
                HII     - extragalactic HII region
                e       - emission spectrum galaxy
                a       - absorption spectrum galaxy
         The two last notations have  been   used   when   there   was   no
          necessary information about their spectra.
    Note (2): IRAS version 1

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

       Bytes Format Units   Label     Explanations

       1-  4  I4    ---     Mrk       [1/1515]+= Markarian designation number
       7- 11  A5    ---     Sp2       Spectral type
      14- 17  F4.1  mag     Mag2      ? Magnitude of secondary
      21- 26  F6.4  ---     z2        ? Redshift of secondary
      28- 90  A63   ---     Text      Oext of note

    Byte-by-byte Description of file:  table6.dat

       Bytes Format  Units   Label    Explanations

       1-  4  I4     ---     Name     Mrk galaxy number
       7-  8  I2     h       RAh      Right ascension 1950.0
      10- 11  I2     min     RAm      Right ascension 1950.0
      13- 16  F4.1   s       RAs      Right ascension 1950.0
          19  A1     ---     DE-      Declination sign
      20- 21  I2     deg     DEd      Declination 1950.0
      23- 24  I2     arcmin  DEm      Declination 1950.0
      26- 27  I2     arcsec  DEs      Declination 1950.0
      31- 34  F4.1   mag     Mobs     Observed magnitude from the CGCG
          35  A1     ---     n_Mobs   [*] An '*' indicates that there were no value
                                         in CGCG and that the magnitude given is the
                                         original estimates of the authors
      37- 41  A5     ---     Sp       Spectral type
      43- 44  I2     ---     Nref     []? Reference number (See "refs" file)
      48- 69  A22    ---     Spect.   Spectrum

    Byte-by-byte Description of file:  table8.dat

       Bytes Format  Units   Label    Explanations

       1-  4  I4     ---     Mrk      [1/1515]+ Markarian galaxy number
       7- 62  A56    ---     Name     Other names

    Byte-by-byte Description of file:  table9.dat

       Bytes Format  Units   Label    Explanations

       1- 15  A15    ---     Name     Galaxy name (1)
      17- 20  I4     ---     Mrk      Markarian galaxy designation

    Note (1):
              CG:  Case
               I:  IC
             KUG:  Kiso
               N:  NGC
               U:  UCG
            I Zw:  Zw

    Byte-by-byte Description of file:  table10.dat

       Bytes Format  Units   Label    Explanations

       1-  4  I4     ---     Mrk      [1/1515]+= Markarian designation number
       7- 13  A7     ---     Name     Name composed with HHMM+DD (hours and minutes
                                       of RA 1950, degrees of DE 1950).
                                       This name is not unique among FBS galaxies

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

       Bytes Format  Units   Label    Explanations

       1-  3  I3     ---     Nref     [1/108]+= Reference number
       5- 80  A76    ---     Ref      References

    Historical notes:
      * 28-Aug-1994: The catalogue was provided by courtesy of V.Lipovetskii
        to H.Andernach; it was numbered A138 in H. Andernach's "List of
        Astronomical Catalogues and Documents kindly provided on request by
        various authors". The documentation was written by Koichi Nakajima
        (CDS, and Japanese Data Centre)
      * 23-Jan-1995: documentation standardized by Patricia Bauer [CDS]
      * 20-Cot-1997: file refs.dat rewritten by Francois Ochsenbein [CDS]

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    (End)                    Patricia Bauer, Francois Ochsenbein [CDS]   20-Oct-1997