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J/A+AS/106/199   B-band photometry in Fornax and Virgo   (Caon+ 1994)
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'Global mapping' B-band photometry of a complete sample of Fornax and Virgo
early-type galaxies
     Caon N., Cappaccioli M., D'onofrio M.
    <Astron. Astrophys. Suppl. Ser. 106, 199 (1994)>
    =1994A&AS..106..199C   (SIMBAD/NED Reference)
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Keywords: galaxies: ellipticals and lenticular, cD - fundamental parameters -
          photometry

Abstract:
   We present the B-band surface photometry of 19 early-type galaxies of the 
   Virgo cluster, and of 28 galaxies of the same morphological type belonging 
   to the Fornax clusters, obtained through the `global mapping' technique 
   which couples CCD and photographic plates. Taking into account 33 galaxies 
   already studied by Caon et al. (1990) with the same methodology, the Virgo 
   sample of early-type galaxies is now 80% complete down to B_T_=14. The 
   Fornax sample is 95% complete down to B_T_=15. The geometric and photometric
   properties of the total sample of 80 galaxies are derived measuring accurate
   light profiles, ellipticities, position angles and Fourier coefficients of 
   the isophotes. The main sources of errors of the `global mapping' procedure
   are reviewed and the effects of seeing discussed. Global galaxian parameters
   such as total luminosity, effective radius, and effective surface brightness,
   are computed for the whole sample in a homogeneous way. Our goal is to 
   create an unbiased set of data to be used for investigating the process of 
   galaxy formation and evolution.


File Summary:
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 FileName    Lrecl    Records    Explanations
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ReadMe          80          .    This file
tablea          80       2276    B-band photometry
tableb          80        259    B-band photometry
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See also:
         II/180 : Galaxies in 3.5degs of Fornax cluster, and in 5 nearby groups
  J/A+A/296/319 : Fornax cluster early-type galaxies (D'Onofrio+, 1995)
 J/A+AS/133/325 : Velocities of 12 Fornax elliptical galaxies (Graham+ 1998)
   
Byte-by-byte Description of file: tablea
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   Bytes Format  Units       Label    Explanations
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   1-  9  A9     ---         Name     Object name
  15- 18  F4.2  arcsec       D^1/4    Distance at power 1/4 from center
  29- 33  F5.2  mag/arcsec2  B(maj)   []? Surface brightness along the major
                                           axis (folded)
  40- 44  F5.2  mag/arcsec2  B(min)   []? Surface brightness along the minor
                                           axis (folded)
  55- 59  F5.3   ---         Eps      []? Ellipticity
  65- 69  F5.1   deg         PA       []? Position angle
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Note: tablea correspond to tables A-1 to A-47 of the article except
       tables A-7, A-12, A-15 and A-31
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Byte-by-byte Description of file: tableb
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   Bytes Format  Units      Label    Explanations
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   1-  8  A8     ---        Name     Object name
  13- 16  F4.2   arcsec     D^1/4    Distance at power 1/4 from center
  24- 28  F5.2 mag/arcsec2  B(maj)SW []? Surface brightness along the major axis
                                          (side as coded)
  33- 37  F5.2 mag/arcsec2  B(maj)NE []? Surface brightness along the major axis
                                          (side as coded)
  45- 49  F5.2 mag/arcsec2  B(min)SE []? Surface brightness along the minor axis
                                          (side as coded)
  54- 58  F5.2 mag/arcsec2  B(min)NW []? Surface brightness along the minor axis
                                          (side as coded)
  66- 70  F5.3   ---        Ell      []? Ellipticity
  76- 80  F5.1   deg        PA       []? Position angle
                                           (measured from N through E)
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Note: tableb correspond to tables  A-7, A-12, A-15 and A-31 of the article
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(End)                                           Patricia Bauer [CDS] 21-Mar-1994