Access to Astronomical Catalogues

J/MNRAS/224/61      NGC 6649 UBV photometry (Walker+ 1987)
CCD photometry of galactic clusters containing Cepheid variables - IV. NGC 6649
    Walker A.R., Laney C.D.
   <Mon. Not. R. Astron. Soc. 224, 61 (1987)>
   =1987MNRAS.224...61W
ADC_Keywords: Clusters, open ; Stars, variable ; Photometry, CCD


Abstract:
    A colour magnitude diagram to V=20 is given for 395 stars in the
    heavily reddened open cluster NGC 6649. The absorption-corrected
    distance modulus is 11.00±0.15mag (1585±110pc) assuming
    R(OB)=3.27±0.10 for NGC 6649 and based on a ZAMS with zero point
    referenced to a Pleiades distance modulus of 5.56mag. The range of
    reddening over the 5arcmin diameter of the cluster is
    {DELTA}E(B-V)=0.3mag. NGC 6649 contains the double mode Cepheid V367
    Sct, which has <MV≥-3.80±0.06 and <B0>-<V0≥0.58±0.02.
Objects:
    ----------------------------------------------------------
       RA  (2000)  DE    Designation(s)
    ----------------------------------------------------------
     18 33.5    -10 24   NGC 6649
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        38      395   Photometry of NGC 6649 stars


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

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     No        Sequential number
   5-  8  I4    arcsec  oRA       Offest in right ascension (1)
  10- 13  I4    arcsec  oDE       Offest in declination (1)
  15- 19  F5.2  mag     Vmag      V magnitude
  21- 24  F4.2  mag     B-V       B-V colour index
  26- 29  F4.2  mag     U-B       ? U-B colour index
  31- 32  I2    ---     o_Vmag    Number of observation in V magnitude
  34- 35  I2    ---     o_Bmag    Number of observation in B magnitude
      37  I1    ---     o_Umag    Number of observation in U magnitude

Note (1): Coordinates with respect to star #19, in the sense that
     any star to the NE of star No. 19 has positive oRA and oDE.
     Star #19 is GSC 5695-514 with J2000 position 18:33:24.91-10:24:24.8


History: Prepared via OCR at CDS.


References:
  Walker, Paper I. (Lynga 6), 1985MNRAS.213..889W
  Walker, Paper II. (NGC 6067), 1985MNRAS.214...45W
  Walker & Coulson, Paper III. (NGC 6067), 1985SAAOC...9...97W
  Walker, Paper V. (Ruprecht 79), 1987MNRAS.229...31W
(End)                       Marie-Jose Wagner, Patricia Bauer [CDS]  19-Jun-1997