J/A+A/511/A56       Abundances of five open clusters            (Pancino+, 2010)
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Chemical abundance analysis of the open clusters Cr 110, NGC 2420, NGC 7789,
and M 67 (NGC 2682).
    Pancino E., Carrera R., Rossetti, E., Gallart C.
   <Astron. Astrophys. 511, A56 (2010)>
   =2010A&A...511A..56P
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ADC_Keywords: Clusters, open ; Stars, giant ; Equivalent widths ; Spectroscopy
Keywords: stars: abundances - Galaxy: disk -
          open clusters and associations: general

Abstract:
    The present number of Galactic open clusters that have high resolution
    abundance determinations, not only of [Fe/H], but also of other key
    elements, is largely insufficient to enable a clear modeling of the
    Galactic disk chemical evolution. To increase the number of Galactic
    open clusters with high quality measurements, we obtained high
    resolution (R~30000), high quality (S/N~50-100 per pixel), echelle
    spectra with the fiber spectrograph FOCES, at Calar Alto, Spain, for
    three red clump stars in each of five Open Clusters. We used the
    classical equivalent width analysis method to obtain accurate
    abundances of sixteen elements: Al, Ba, Ca, Co, Cr, Fe, La, Mg, Na,
    Nd, Ni, Sc, Si, Ti, V, and Y. We also derived the oxygen abundance
    using spectral synthesis of the 6300{AA} forbidden line.

Description:
    Atomic data and equivalent widths for 15 red clump giants in 5 open
    clusters: Cr 110, NGC 2099, NGC 2420, M 67, NGC 7789.

File Summary:
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 FileName   Lrecl  Records   Explanations
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ReadMe         80        .   This file
table1.dat    103       15   Observing logs and programme stars information
table5.dat     56     5265   Atomic data and equivalent widths
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See also:
 J/A+A/455/271 : Abundances of red giants in NGC 6441 (Gratton+, 2006)
 J/A+A/464/953 : Abundances of red giants in NGC 6441 (Gratton+, 2007)
 J/A+A/505/117 : Abund. of red giants in 15 globular clusters (Carretta+, 2009)

Byte-by-byte Description of file: table.dat
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   Bytes Format Units     Label     Explanations
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   1-  7  A7    ---       Cluster   Cluster name
   9- 12  I4    ---       Star      
  14- 20  F7.2  0.1nm     Wave      wave
                                    ? Wavelength in Angstroms
  22- 23  A2    ---       El        a
      24  I1    ---       ion       ?=0
                                    - Ionization stage (1 for neutral element)
  26- 30  F5.2  eV        chiEx     Excitation potential
  32- 37  F6.2  ---       loggf     Logarithm of the oscillator strength
  39- 43  F5.1  0.1pm     EW        ?=-9.9 Equivalent width (in mA)
  46- 49  F4.1  0.1pm   e_EW        ?=-9.9 rms uncertainty on EW
  51- 56  F6.3  ---       Q         ?=-9.999 DAOSPEC quality parameter Q
                                     (large values are bad)
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Acknowledgements:
    Elena Pancino, elena.pancino(at)oabo.inaf.it
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(End)    Elena Pancino [INAF-OABo, Italy], Patricia Vannier [CDS]    23-Nov-2009
