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II/194A     Photometric study of IC 4665  (McCarthy+ 1969)
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A photometric study of the open cluster IC 4665
     McCarthy M.F.S.J., O'Sullivan S.S.J.
     <Ricerche Astron., 7, 483-498 (1969)>
     =1969RA......7..483M      (SIMBAD/NED RefCode)
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ADC_Keywords: Clusters, open ; Photographic catalog

Summary:
    Photographic observations of the open cluster IC 4665 made on blue
    and yellow sensitive plates with the Vatican 40 cm refractor are
    presented and discussed. Apparent magnitudes were determined for
    200 stars by means of a program of photometric reduction designed
    by BERTIAU. The mean internal errors in the final blue and yellow
    magnitudes average about 0.02 mag. All stars selected for
    measurement of proper motions by VASILEVSKIS on long base-line
    Allegheny plates have been observed here. The forty stars which
    VASILEVSKIS' proper motion measures have shown to be probable
    members constitute a normal main sequence from V = 7 to V = 13.5,
    followed by a gap of 0.2 to 0.3 mag, and a group of 10 stars in
    the subgiant domain. The reality of this gap and the membership
    characteristics of the stars in the subgiant region of the C - M
    diagram are discussed.


File Summary:
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 FileName   Lrecl    Records    Explanations
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ReadMe         80          .    This file
table1.dat     67         29    Standard stars: photoelectric and
                                photographic data compared
table2.dat      60        200    General catalogue of stars observed in
                                IC 4665 (Merging of tables 2,3,4)
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Byte-by-byte Description of file: table1.dat
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   Bytes Format  Units   Label    Explanations
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   1-  3  A3     ---     Vno      Number on the plate (Vasilevskis)
   8- 10  I3     ---     Kno      [1/125]? Number in Kopff
  17- 18  I2     ---     Ano      [1/31]? Number in Alcaino
  25- 31  A7     ---     BD       Bonner Durchmustering identification
  35- 39  F5.2   mag     Vpe      V photoelectric
  41- 45  F5.2   mag     (B-V)pe  (B-V) color photoelectric
  49- 53  F5.2   mag     Vpg      V photographic
  56- 60  F5.2   mag     (B-V)pg  (B-V) photographic
  65- 67  A3     ---     Notes    Notes as follows:
                                    1 = pe data from Hogg & Kron, AJ 60, 365
                                    2 = pe data from Johnson ApJ 119, 181
                                                        and  ApJ 126, 121
                                    3 = pe data (this paper)
                                    4 = pe data from Coyne (priv. comm.)
                                    5 = not used as yellow standard
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Byte-by-byte Description of file: table2.dat
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   Bytes Format  Units   Label    Explanations
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   1-  3  A3     ---     Vno      Number on the plate (Vasilevskis)
   5-  7  I3     ---     Kno      [1/125]? Number in Kopff
  11- 12  I2     ---     Ano      [1/31]? Number in Alcaino
  16- 22  A7     ---     BD       Bonner Durchmustering identification
  25- 29  F5.2   mag     B        [8/15]? Photographic B
  31- 35  F5.2   mag     V        [6.8/14]? photographic V
  37- 41  F5.2   mag     (B-V)    []? color
  43- 46  F4.3   mag     e_B      []? mean error on B
  48- 51  F4.3   mag     e_V      []? mean error on V
      54  I1     ---     Class    [1/3]? 1=probable member, 2=Possible member,
                                         3=Less possible member
  58- 60  A3     ---     Notes    Notes as follows:
                                   #1 = Less than 6 plates in B determination
                                   #2 = Less than 6 plates in V determination
                                   #3 = Identification from Kopff,
                                        Mitt. Hamburger Sternw. 8, No 52
                                   #4 = Suspected variable
                                   #6 = Photoelectric data from Hogg & Kron,
                                        AJ 60, 365
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Historical Notes:
  * 02-Jun-1994: Keypunched at CDS, Strasbourg.
         Tables 2, 3 and 4 merged into single file table2.
  * 13-Jun-1995: errors corrected in table2 at CDS
        Star 093   Ano is 25 (instead of 26)
        Star 090   is BD+5 3483 (instead of BD+5 3843)
        Star 105   Ano is 24 (instead of  4)
        Star 033   Kno is 37 (instead of 38)
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(End)       M.-J. Wagner, James Marcout, Francois Ochsenbein [CDS]   12-Jun-1995