Astronomical Data Center
ADC/CDS Standard Document for Catalog:
/catalogs/7/7077/

The following is the "ReadMe" document that describes this ADC catalog. You can 
access the files described here from the anonymous FTP directory 
ftp://adc.gsfc.nasa.gov/pub/adc/archives/catalogs/7/7077/. Or you can preview 
the data files. (Please note that the ADC data viewer does not currently work 
with FITS files or datasets that don't have standard documents. The viewer has 
not been tested against all possible data files. It may not work for some or all 
files for this catalog. See the ADC Archive Data Viewer Interface page for the 
testing status of the ADC's top 100 catalogs and top 100 journal tables.) 

VII/77      Isolated Pairs of Galaxies in the Northern Hem (Karachentsev 1972)
================================================================================
Catalogue of Isolated Pairs of Galaxies in the Northern Hemisphere
    Karachentsev I.D.
    <Publ. of the Special Astrophy. Observatory of USSR AS, No. 7 (1972)>
    =1972PSAOU...7....1K
================================================================================
ADC_Keywords: Galaxies

Description:
   The catalog is a compilation of observational data for 603 isolated pairs
   of galaxies with component magnitudes brighter than 15.7 and north of
   declination -3 degrees.  The catalog includes pair numbers and component
   letters, coordinates, apparent magnitudes, radial velocities, major axes and
   eccentricities, Hubble classifications, spectral types, and distances
   between components.

File Summary:
--------------------------------------------------------------------------------
 FileName       Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
data.dat           70     1206   Catalog Data
--------------------------------------------------------------------------------

Byte-by-byte Description of file: data.dat
--------------------------------------------------------------------------------
   Bytes  Format   Units   Label     Explanations
--------------------------------------------------------------------------------
   3-  5   I3      ---     ID       *[1/603]+= Current number of the pair
       6   A1      ---     Comp     *[AB] A or B for the components      
   9- 10   I2      h       RAh       Right Ascension 1950 (hours)                  
  12- 15   F4.1    min     RAm       Right Ascension 1950 (minutes)                
      18   A1      ---     DE-       Declination 1950 (sign)                       
  19- 20   I2      deg     DEd       Declination 1950 (degrees)                    
  22- 23   I2      arcmin  DEm       Declination 1950 (minutes)                    
  26- 29   F4.1    mag     mag       [,15.7]?  Apparent magnitude                  
  32- 36   I5      km/s    RV       *[0,20000]? Radial velocity                  
  39- 41   I3      km/s    e_RV      []? Mean square error on RV                   
      44   I1      ---     r_RV     *[1/6]? Source of RV 
  46- 49   F4.1    arcmin  D         Major axis                                    
  52- 55   F4.2    ---     Eccen     [0/1] Minor-to-major axis ratio               
  58- 59   A2      ---     MType    *Morphological type in Hubble's classification
  62- 64   A3      ---     Sp       *Spectral type
  66- 70   F5.2    arcmin  Sep       Distance between components (min. of arc)     
--------------------------------------------------------------------------------
Note on ID:
   Running number of the pairs in this catalog. 

Note on Comp:
   Indicates to which component of the pair the data refer. This is always
   either A or B. 

Note on RV:
  Radial velocity corrected for the Sun's motion  

Note on r_RV: 
  Sources of radial velocities are:                                     
   =1= Karachentsev I.D., 1980, ApJS 44, 137 ;                                  
       Karachentsev I.D., 1981, Sov. Astron. Letters 7, 76;                     
       Karachentsev I.D., 1983, Sov. Astron. Letters 9, 67                      
   =2= White S.D., Huchra J., Latham D., Davis M., 1983, MNRAS 203, 701         
   =3= Tifft W.G., 1982, ApJS 50, 319                                           
   =4= Karachentsev I.D., Sargent W.L.W., Zimmermann B., 1979, Astrofiz. 15, 25 
       Karachentsev I.D., Pronik V.I., Chuvaev K.K., 1975, A&A 41, 375          
       Karachentsev I.D., Pronik V.I., Chuvaev K.K., 1976, A&A 51, 185          
   =5= Rood H.J., 1983, "A catalogue of Galaxy Redshifts";                      
       de Vaucouleurs G., de Vaucouleur A, RC2 catalogue                        
   =6= Huchra J., Davis M., Latham D., Tonry J., 1983, ApJS 52, 89              
       Gregory S.A., 1975, ApJ 199, 1                                           
       Khachikjan E., 1973, Astrofiz. 9, 157                                    

Note on MType: 
  Hubble types have been chosen as follows:                             
    'E ' : all ellipticals                                                      
    'S0' : just Hubble S0 type                                                  
    'Sx' , x=a,b,c: includes SBx                                                
    'Sm' : includes Irr                                                         

Note on Sp: 
  The codes as described in Karachentsev et al. (1985) are 
    'ABS' : absorption-line system                                              
    'WEK' : weak emission                                                       
    'MID' : medium strength emission                                            
    'STG' : strong emission                                                     

Remarks and Modifications:
   The Catalogue of Isolated Pairs of Galaxies in the Northern Hemisphere
   was received by the Astronomical Data Center (ADC), NASA Goddard Space
   Flight Center, from the Centre de Donnes Astronomiques, Strasbourg
   (CDS), in February 1986.
   The original tape contained only the single text file. (Although
   Karachentsev et al. (1985) refers to a second file of documentation,
   this was apparently not included in the data received from the CDS.) An
   editor was used to compress the data file from 70 to 59-byte records by
   removing blank columns. The data required no further editing. A FORTRAN
   program was run that checked the validity of each field according to its
   data type and value.  

Addendum (04/27/87):
   In a private communication dated 18 December 1986 and received by the
   Astronomical Data Center 23 April 1987, V. Lebedev notes that the
   Catalogue of Isolated Pairs of Galaxies in the Northern Hemisphere lists
   several galaxy-star pairs. While these objects have the same coordinates
   and radial velocities, there is no information for them regarding the
   type of the galaxy or the type of its linear spectrum.

Acknowledgments:
   The original ADC documentation by Anne C. Raugh (1986) was used to 
   generate this ReadMe file.

References:
   Karachentsev, I., Lebedev, V., and Shcherbanovskij, A. 1985, Bull.
      Inform. CDS, No. 29. 44, 137.
   Karachentsev, I. D. 1981, Letters to the Soviet Astron. J., 7, 76.
   Karachentsev, I. D. 1983, Letters to the Soviet Astron. J., 9, 67.
   White, S. D., Huchra, J., Latham, D., and Davis, M. 1983, Mon. Not. Roy.
      Astron. Soc., 203, 701.
   Tifft, W. G. 1982, Astrophys. J. Suppl., 50, 319.
   Karachentsev, I. D., Sargent, W. L. W., Zimmermann, B. 1979,
      Astrofizika, 15, 25.
   Karachentsev, I. D., Pronik, V. I., and Chuvaev, K. K. 1975, Astron.
      Astrophys., 41, 375.
   Karachentsev, I. D., Pronik, V. I., and Chuvaev, K. K. 1976, Astron.
      Astrophys., 51, 185.
   Rood, H. J. 1983, A Catalogue of Galaxy Redshifts, in press.
   de Vaucouleurs, G., de Vaucouleurs, A., and Corwin, H. 1976, Second
      Reference Catalogue of Bright Galaxies (Austin: University of Texas).
   Huchra, J., Davis, M., Latham, D., and Tonry, J. 1983, Astrophys. J.
      Suppl., 52, 89.
   Gregory, S. A. 1975, Astrophys. J., 199, 1.
   Khachikjan, E. 1973, Astrofizika, 9, 157.
================================================================================
(End) Francois Ochsenbein [CDS]; C.-H. Joseph Lyu [Hughes STX/NASA] 27-Jan-1997

Go to ADC Home Page