Access to Astronomical Catalogues

J/A+AS/144/227      BV photometry of M71                     (Geffert+, 2000)
First results of a photometric and astrometric study of the
globular cluster M 71 (NGC 6838).
     Geffert M., Maintz G.
    <Astron. Astrophys. Suppl. Ser. 144, 227 (2000)>
    =2000A&AS..144..227G
ADC_Keywords: Clusters, globular ; Photometry, UBV ; Photometry, CCD

Keywords: astrometry - stars: blue stragglers -
          Galaxy: globular clusters : individual: M 71

Description:
    File table2 contains coordinates (J2000) and B,V magnitudes and B-V
    colours with corresponding errors of 4450 stars in a 20'x20' region
    centered on the globular cluster M 71 (NGC 6838). The limiting
    magnitude of the catalogue is about V=18.0
    The observations were made in 1995 at Calar Alta Observatory.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        64     4450   Coordinates and B and V magnitudes for stars in a
                               field of 20'x20' around the globular cluster M 71


See also:

Byte-by-byte Description of file: table2.dat


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1-  2  I2    h       RAh       Right ascension (J2000)
   4-  5  I2    min     RAm       Right ascension (J2000)
   7- 12  F6.3  s       RAs       Right ascension (J2000)
      14  A1    ---     DE-       Declination sign (J2000)
  15- 16  I2    deg     DEd       Declination (J2000)
  18- 19  I2    arcmin  DEm       Declination (J2000)
  21- 25  F5.2  arcsec  DEs       Declination (J2000)
  27- 32  F6.3  mag     Bmag      B-magnitude
  34- 38  F5.3  mag     e_Bmag    Mean error of B-magnitude
  40- 45  F6.3  mag     Vmag      V-magnitude
  47- 51  F5.3  mag     e_Vmag    Mean error of V-magnitude
  53- 58  F6.3  mag     B-V       B-V Colour
  60- 64  F5.3  mag     e_B-V     Mean error of B-V Colour


Acknowledgements: Michael Geffert 

(End)                                        Patricia Bauer [CDS]    27-Jun-2000