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J/MNRAS/289/745     Mira variables in NGC 6749 field             (Rosino+, 1997)
NGC 6749: a metal-poor halo globular cluster in a disc field rich in
Mira variables.
    Rosino L., Ortolani S., Barbuy B., Bica E.
   <Mon. Not. R. Astron. Soc. 289, 745 (1997)>
   =1997MNRAS.289..745R
ADC_Keywords: Clusters, globular ; Stars, variable ; Magnitudes

Keywords: stars: variables: other - globular clusters: individual: NGC 6749 -
          Galaxy: halo

Abstract:
    We present V, I photometry of the loose star cluster NGC 6749, and for
    the first time colour-magnitude diagrams are provided. We confirm
    that it is a globular cluster and its blue horizontal branch indicates
    that it is metal-poor. We derive a reddening of E(B-V)=1.39±0.04
    and a distance from the Sun d☉=7.3±0.9kpc (assuming a
    total-to-selective absorption R=3.4). The cluster is projected very
    close to the Galactic plane, and the derived distance implies a
    Galactic coordinate Z~-300pc. It is thus a halo globular cluster
    located close to the disc plane. We also discuss the properties of 78
    newly discovered long-period variable stars, of which 75 are Miras,
    projected within 1° of the cluster centre. The variables do not
    appear to be associated with the globular cluster. From their periods,
    most of them belong to the metal-rich disc or bulge stellar
    populations.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat        60       78   Mira variables in the NGC 6749 field


See also:
    J/other/IBVS/5187 : Red variables near NGC 6749 (Skiff, 2001)


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

   Bytes Format Units   Label    Explanations

   1-  5  A5    ---     [ROB97]  Designation (Cl* NGC 6749 ROB NNNNN in Simbad)
       6  A1    ---     ---      [=]
   7-  9  A3    ---   n_[ROB97]  Other designation
  11- 12  I2    h       RAh      Right ascension (1950)
  14- 15  I2    min     RAm      Right ascension (1950)
  17- 18  I2    s       RAs      Right ascension (1950)
      20  A1    ---     DE-      Declination sign (1950)
  21- 22  I2    deg     DEd      Declination (1950)
  24- 27  F4.1  arcmin  DEm      Declination (1950)
  29- 35  I7    d       T0       ? Starting date for the phase calculation
                                    corresponding to the maximum in Julian days
      36  A1    ---     u_T0     Uncertainty flag on T0
  38- 42  F5.1  d       Per      ? Period
      43  A1    ---     u_Per    Uncertainty flag on Per
  46- 49  F4.1  mag     Imax     Maximum I Cousins magnitude
      50  A1    ---     u_Imax   Uncertainty flag on Imax
  52- 55  F4.1  mag     Imin     Minimum I Cousins magnitude
      56  A1    ---     u_Imin   Uncertainty flag on Imin
  58- 60  A3    ---     Notes    Individual notes (1)

Note (1): 75 variables are Mira type, 3 are red irregular (Irr)
          or semiregular (SR)
     Three Mira variables already known in the field, namely V810,
     V1115, and V1192, are not reported in the table.


History:
    Prepared via OCR at CDS.
(End)                        James Marcout,  Patricia Bauer [CDS]    13-May-2002