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J/A+AS/108/151      Open clusters CCD photometry. I.             (Kaluzny, 1994)
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CCD photometry of distant open clusters: I. Berkeley 22, Berkeley 29
and Berkeley 54
       Kaluzny J.
      <Astron. Astrophys. Suppl. Ser. 108, 151 (1994)>
      =1994A&AS..108..151K      (SIMBAD/NED Reference)
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ADC_Keywords: Clusters, open ; Photometry, CCD
Keywords: open clusters and associations: individual: Be 22 -
          open clusters and associations: individual: Be 29 -
          open clusters and associations: individual: Be 54 -
          blue stragglers - HR diagram

Abstract:
   We present deep BVI photometry for three previously unstudied rich and 
   distant open clusters. The color-magnitude diagrams of all studied objects 
   show well-defined main-sequences and clumps of helium burning giants. 
   Estimates of age, reddening and distance are given for all target clusters. 
   Ages of Be 54 and Be 29 are close to the age of M 67 (about 4Gyr on the 
   scale of Geneva isochrones). Age of Be 22 is about 3Gyr. Heliocentric 
   distance of Be 29 is estimated at 10.5 kpc while its galactocentric 
   distance is about 19kpc. Be 29 seems to be the most distant galactic open 
   cluster known in sense of its heliocentric as well as galactocentric 
   distance. A clearly marked sequence of binaries is visible on the 
   color-magnitude diagram of Be 29. Two likely candidates for evolved giants 
   belonging to the very extended halo of Be 29 were identified. Our 
   photometry suggests extremely low metallicity of Be 29. Several candidates 
   for variable stars were found in the field of Be 54.

Objects:
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       RA   (2000)   DE    Designation(s)
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    21 03 12   +40 28.0    Cl Berkeley 54 = C 2101+402
    05 58 24   +07 50.0    Cl Berkeley 22 = C 0555+078
    06 53 04.3 +16 55 39   Cl Berkeley 29 = C 0650+169
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File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table1             79     1492   VI photometry of stars from Be 54 field
table2             79     1041   BVI photometry of stars from Be 22 field
table3             79     1125   BVI photometry of stars from Be 29 field
table4             60      834   BV photometry of stars from Be 29 field
                                  (Las Campanas data)
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See also:
       J/A+AS/114/1 : CCD UBVI photometry of NGC 6791 (Kaluzny+, 1995)
     J/A+AS/121/455 : BVI photometry of stars in Berkeley 18 (Kaluzny 1997)
      J/A+AS/133/25 : CCD BVI photometry of Trumpler 5 (Kaluzny 1998)

Byte-by-byte Description of file: table1 table2 table3 table4
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   Bytes Format  Units   Label    Explanations
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   1-  4  I4     ---     ID       ID number
   7- 13  F7.2   pix     X        X coordinate, X axis points toward South (1)
  16- 22  F7.2   pix     X        Y coordinate, Y axis points toward East (1)
  24- 29  F6.3   mag     Vmag     V magnitude
  31- 36  F6.3   mag   e_Vmag     rms uncertainty on V
      39  I1     ---   o_Vmag     Number of averaged V measurements
      41  I1     ---   q_Vmag     Quality flag for V (2)
  43- 48  F6.3   mag     B-V      []? B-V colour (3)
  50- 55  F6.3   mag   e_B-V      []? rms uncertainty on B-V
      58  I1     ---   o_B-V      []? Number of averaged B measurements
      60  I1     ---   q_B-V      []? Quality flag for B-V (2)
  62- 67  F6.3   mag     V-I      []? V-I colour (3)
  69- 74  F6.3   mag   e_V-I      []? rms uncertainty on V-I
      77  I1     ---   o_V-I      []? Number of averaged I measurements
      79  I1     ---   q_V-I      []? Quality flag for V-I
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Note (1): 1 pixel=0.30 arcsec
Note (2): q=1 means relatively poor quality
Note (3): For table2 and table3, no value means "unknown color"
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(End)                                         Patricia Bauer [CDS]   26-Sep-1994