Access to Astronomical Catalogues

J/MNRAS/250/683       BVI CCD photometry of NGC 7510           (Sagar+, 1991)
CCD photometry of the distant young cluster NGC 7510.
    Sagar R., Griffiths W.K.
   <Mon. Not. R. Astron. Soc. 250, 683 (1991)>
   =1991MNRAS.250..683S
ADC_Keywords: Clusters, open ; Photometry, CCD


Abstract:
    CCD observations in B, V and I passbands have been used to generate
    deep V, (B-V) and V, (V-I) colour-magnitude diagrams for the open
    cluster NGC 7510. The sample consists of 592 stars reaching down to
    V=21mag. There appears to be non- uniform extinction over the face of
    the cluster with the value of colour excess, E(B-V), ranging from 1.0
    to 1.3mag. The law of interstellar extinction in the direction of the
    cluster is found to be normal. A broad main sequence is clearly
    visible in both colour-magnitude diagrams. From the bluest part of the
    colour-magnitude diagrams, the true distance modulus to the cluster
    has been estimated as 12.5±0.3mag and an upper limit of 10 Myr
    has been assigned for the cluster age.

Description:
    The observations were carried out in the B, V, and I photometric
    bands, at the 2.3-m INT at La Palma.
    The cluster regions were imaged only on the night of 1988 July 23-24.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        61      592   Relative positions and CCD BVI magnitudes of
                              stars measured in the field of NGC 7510


See also:
   J/A+AS/115/325 : UBV photometry in the cluster NGC 7510 (Barbon+, 1996)
   J/A+A/443/157  : CCD photometry in 6 open clusters (Paunzen+, 2005)


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     SG        [1/592]+ Sequential number,
                                           Cl* NGC 7510 SG NNN in Simbad
   6- 11  F6.2  pix     Xpos      X position (1)
  14- 19  F6.2  pix     Ypos      Y position (1)
  22- 26  F5.2  mag     Vmag      V magnitude
  29- 32  F4.2  mag     B-V       ? B-V colour index
  35- 38  F4.2  mag     V-I       ? V-I colour index
      41  I1    ---     oB        ? Number of observations in B band
  44- 45  I2    ---     oV        ? Number of observations in V band
      48  I1    ---     oI        ? Number of observations in I band
  51- 61  A11   ---     Names     Other identifications (2)

Note (1): North is to the right side and east is towards the top.
          The scale is 0.74arcsec/pix.
Note (2): Other names are:
     FS = Fenkart & Schroder (1985A&AS...59...83F)
          Cl* NGC 7510 FS NNN in Simbad
    HPE = Hoag et al. (1961PUSNO..17..343H) in the photoelectric system
          Cl* NGC 7510 HPG NN in Simbad
    HPG = Hoag et al. (1961PUSNO..17..343H) in the photographic system
          NGC 7510 NN in Simbad


History:
    Prepared via OCR at CDS.
(End)                         James Marcout, Patricia Bauer [CDS]    27-Jun-2003