CDROM/AJ/V109/P0663      Terzan 7 (Buonanno+ 1995)
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Terzan 7: A Young Metal-Rich Globular Cluster in the Milky Way
      R. Buonanno, C. E. Corsi, L. Pulone, F. Fusi Pecci, H. B. Richer &
      G. C. Fahlman
      <1995, AJ, 109, 663>
      =1995AJ....109..663B
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Abstract:
  The first extensive CCD color-magnitude diagram for the metal-rich
  galactic globular cluster Terzan 7 is presented.  All age indicators
  derived from this diagram suggest that the cluster is young, about 70%
  of the age of 47 Tuc, which has similar metallicity.  A rich population
  of blue straggler stars is also found in this cluster.  With Terzan 7,
  the anomaly of young clusters is thus extended to cover almost the
  entire range of galactic globular cluster metallicities.  Several
  possibilities for the origin of young galactic globular clusters are
  discussed.


File Summary:
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File Name    Lrecl    Records   Explanations
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table2.dat      29       1731   Magnitudes, colors, and positions of stars in
                                Terzan 7
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Byte-by-byte Description of file: table1.dat table2.dat
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   Bytes Format  Units    Label      Explanations
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   1- 5   I5     ---      Star       Star number
   6-11   F6.2   mag      V          V magnitude
  12-17   F6.2   mag      B-V        B-V color
  18-23   I6     pix      X         *X pixel position
  24-29   I6     pix      Y         *Y pixel position
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Notes for file: table2.dat
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X, Y:
  The X and Y coordinates are in pixels relative to the cluster
  center.  The location of this reference point was determined by
  evaluating the unweighted means of the X and Y positions of the
  stars falling within a radius of 300 pixels from a provisional
  center fixed by eye, until the procedure has converged to a stable
  value.  A small subset of bright stars has been indicated in Fig. 1
  of the printed paper to provide a reference grid for the
  identification of the stars in Table 2.
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(End)                                             Lee Brotzman [ADS] 26-Sep-1995