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J/A+A/511/A56       Abundances of five open clusters            (Pancino+, 2010)

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
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 6300Å 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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 103 15 Observing logs and programme stars information table5.dat 56 5265 Atomic data and equivalent widths
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: table1.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Cluster Cluster name 9- 12 I4 --- Star Star number within the cluster 14- 15 I2 h RAh Right ascension (J2000) 17- 18 I2 min RAm Right ascension (J2000) 20- 23 F4.1 s RAs Right ascension (J2000) 25 A1 --- DE- Declination sign (J2000) 26- 27 I2 deg DEd Declination (J2000) 29- 30 I2 arcmin DEm Declination (J2000) 32- 35 F4.1 arcsec DEs Declination (J2000) 37- 41 F5.2 mag Bmag B magnitude 43- 47 F5.2 mag Vmag V magnitude 49- 53 F5.2 mag Icmag ?=- Cousins I magnitude 55- 59 F5.2 mag Rmag ?=- R magnitude 61- 65 F5.2 mag Ksmag Ks magnitude 67 I1 --- NExp Number of exposures 69- 73 I5 s TExp Total exposure time 75- 77 I3 --- S/N Signal-to-nois ratio 79-103 A25 --- SName Simbad name
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Cluster Cluster name 9- 12 I4 --- Star Star number within the cluster 14- 20 F7.2 0.1nm Wave Wavelength in Angstroms 22- 23 A2 --- El Element name 24 I1 --- ion 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)
Acknowledgements: Elena Pancino, elena.pancino(at)
(End) Elena Pancino [INAF-OABo, Italy], Patricia Vannier [CDS] 23-Nov-2009
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