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J/A+AS/104/379    Integrated Photometry of open clusters      (Battinelli+ 1994)
Integrated photometric properties of open clusters
     BATTINELLI P., BRANDIMARTI A., CAPUZZO-DOLCETTA R.
    <Astron. Astrophys. Suppl. Ser. 104, 379 (1994)>
    =1994A&AS..104..379B
Keywords: clusters: open and associations - techniques: photometric

ADC_Keywords: Clusters, open; Photometry


Abstract:
    Galactic   open  clusters  provide  an   abundant  sample  of  stellar
    aggregates of  various  sizes,  ages  and  metal  abundances,  apt  to
    constitute a template  for  comparison  with  star  systems  in  other
    galaxies.  In this paper we present and discuss a standard methodology
    to synthesize  U,B,V fluxes and colours, and apply  it to a set of 138
    open  clusters. Results are  compared with previous  ones available in
    the literature.  We were able to  calibrate a mass-luminosity relation
    by which  we evaluated the mass  of ∼ 400 open  clusters, leading to a
    well  defined present-day mass function. The number-complete sample of
    galactic open clusters presented in Battinelli & Capuzzo-Dolcetta
    (1992AJ....103.1596B) is enlarged of a 15%.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        62      138   Magnitude, colour and mass
refs.dat          93      106   References to table1
table2.dat        65      115   Galactic coordinates, distance and age


Byte-by-byte Description of file: table1.dat

   Bytes Format  Units   Label    Explanations

   1-  8  A8     ---     Name    *Open cluster name
   9- 12  I4     ---     n        Number of members stars
  13- 18  F6.2   mag     Mv       Integrated magnitude
  20- 24  F5.2   mag     (B-V)0   (B-V)0 colour in decimal log
  26- 30  F5.2   mag     (U-B)0   ? (U-B)0 colour in decimal log
  32- 35  F4.2 [solMass] logM     Mass in decimal log
  37- 42  A6     ---     Notes   *Notes on integrated photometry
  43- 62  A20    ---     r_Notes  Comma-separated references, see file refs.dat

Note on Name:
     Bas=Basel,     Ber=Berkeley,    Bla=Blanco, Boc=Bochum,   Byu=Byurakan,
     Col=Collinder, Fei=Feinstein,   Hog=Hogg,   Hya=Hyades,   Lyn=Lynga,
     Mar=Markarian, N=NGC,           Pis=Pismis, Ple=Pleiades, Ros=Roslund,
     Rup=Ruprecht,  Tra=Trapezium,   Upg=Upgren, VdH=van den Bergh & Hagen,
     Wat=Waterloo,  Wes=Westerlund.
Note on Notes:
     The symbols refer to other authors who give integrated photometry:
         b= Spassova N.M. & Baev P.V. =1985Ap&SS.112..111S
         g= Gray D.F.  =1965AJ.....70..362G
         l= Lynga G. 1987, Lund Catalogue of Open Cluster Data, 5th ed.,
               CDS Catalogue V/92
         p= Pandey A.K., Bhatt B.C., Mahra H.S. & Sagar R.  =1989MNRAS.236..263P
         s= Sagar R., Joshi U.C. & Sinvhal S.D. 1983,
               Bull. Astron. Soc. India 11, 44
     Symbol c stands for clusters in the "complete" sample and
     symbol : stands for uncertain values.
     Hog 17 is included in the sample due to BCD determination based on a
      higher number of members (41).


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

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     RefNo     [1,106]+ Reference number
   5- 23  A19   ---     BibCode   Coded Reference
  25- 93  A69   ---     Text      Text of reference


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

   Bytes Format  Units   Label    Explanations

   1-  8  A8     ---     Name    *Open cluster name
  10- 15  F6.2   deg     GLON     Galactic longitude l
  17- 22  F6.2   deg     GLAT     Galactic latitude b
  24- 27  I4     pc      d        Projected distance to the Sun
  29- 35  F7.2   pc      z        Height on the galactic plane
  37- 41  F5.1   arcmin  D        Angular diameter
  45- 48  F4.2   [yr]    Log(t)   ? Logarithmic age
  53- 57  F5.2   mag     (B-V)to  ? Turn-off colour
  61- 64  F4.2   mag     E(B-V)   Reddening

Note on Name:
     Bas=Basel,     Ber=Berkeley,    Bla=Blanco, Boc=Bochum,   Byu=Byurakan,
     Col=Collinder, Fei=Feinstein,   Hog=Hogg,   Hya=Hyades,   Lyn=Lynga,
     Mar=Markarian, N=NGC,           Pis=Pismis, Ple=Pleiades, Ros=Roslund,
     Rup=Ruprecht,  Tra=Trapezium,   Upg=Upgren, VdH=van den Bergh & Hagen,
     Wat=Waterloo,  Wes=Westerlund.


History:
 * 18-Jan-1994: first archived at CDS (Patricia Bauer)
 * 24-Jan-1999: references added (Francois Ochsenbein)
(End)                    Patricia Bauer, Francois Ochsenbein [CDS]   24-Jan-1999