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J/other/RMxAA/39.39    CCD Photometry of NGC 2658, 2849, 3247    (Ahumada, 2003)
CCD Photometry of the Open Clusters NGC 2658, NGC 2849, and NGC 3247
       Ahumada J.A.
      <Rev. Mex. Astron. Astrofis. 39, 39 (2003)>
      =2003RMxAA..39...39A
ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, UBVRI ;
              Photometry, Cousins
Keywords: open clusters and associations: general -
          open clusters and associations: individual: NGC 2658, NGC 2849,
          NGC 3247

Description:
    CCD photometry of the galactic open clusters NGC 2658, NGC 2849, and
    NGC 3247 is presented. For the first two clusters, BV(RI)_c data are
    given, and for NGC 3247 the data are BV(I)_c. The observations were
    carried out from the Complejo Astronomico El Leoncito (Argentina), and
    from Las Campanas (Chile). Each cluster was observed on two different
    nights; when possible, measurements for a given star were averaged.

    NGC 2658 observations were carried out from CASLEO on the nights of
    8-9 January 1997 and 18-19 April 2001, in the BVRI filters.

    NGC 2849 data in the BVRI filters were obtained at Las Campanas on
    the night 10-11 April 1996, and at CASLEO on 19-20 April 2001.

    NGC 3247 was observed at CASLEO on the nights 16-17 January 1996 (BV)
    and 1-2 April 1998 (BVI).

    The given star coordinates are relative to the corresponding cluster
    center.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table4.dat        78      891   CCD BVRI photometry of NGC 2658
table5.dat        78      666   CCD BVRI photometry of NGC 2849
table6.dat        78      464   CCD BVI photometry of NGC 3247


See also:
   J/A+A/373/153  : CCD Δa-photometry of 5 open clusters (Paunzen+, 2001)
   J/A+AS/109/375 : Blue stragglers in open clusters (Ahumada+, 1995)


Byte-by-byte Description of file: table4.dat table5.dat table6.dat

   Bytes Format Units   Label    Explanations

   1-  4  I4    ---     Seq      Star number in the cluster
   6- 12  F7.2  pix     Xpos     X coordinate (1)
  14- 20  F7.2  pix     Ypos     Y coordinate (1)
  22- 27  F6.3  mag     Vmag     V magnitude
  29- 34  F6.3  mag     e_Vmag   Error of V magnitude
  36- 41  F6.3  mag     B-V      B-V index
  43- 48  F6.3  mag     e_B-V    Error of B-V index
  50- 55  F6.3  mag     V-Ic     ? V-Ic index
  57- 62  F6.3  mag     e_V-Ic   ? Error of V-Ic index
  64- 69  F6.3  mag     V-Rc     ? V-Rc index (Not in table6.dat)
  71- 76  F6.3  mag     e_V-Rc   ? Error of V-Rc index (Not in table6.dat)
      78  I1    ---     o_Vmag   Number of observations

Note (1): Coordinates of the centers:
    NGC 2658: RA = 08h 43.4min , DE = -32° 39.9' (2000.0)
    NGC 2849: RA = 09h 19.4min , DE = -40° 31.2' (2000.0)
    NGC 3247: RA = 10h 26.9min , DE = -57° 55.7' (2000.0)
    Est is to the left, North to the top.
    The scale is 0.813arcsec/pix.


Acknowledgements: William J. Henney 

(End)        W. Henney [Instituto de Astronomia, UNAM, Mexico]       28-Apr-2003