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J/A+A/591/A37  Gaia-ESO Survey. Parameters for cluster members (Jacobson+, 2016)

The Gaia-ESO Survey: Probes of the inner disk abundance gradient. Jacobson H.R., Friel E.D., Jilkova L., Magrini L., Bragaglia A., Vallenari A., Tosi M., Randich S., Donati P., Cantat-Gaudin T., Sordo R., Smiljanic R., Overbeek J.C., Carraro G., Tautvaisiene G., San Roman I., Villanova S., Geisler D., Munoz C., Jimenez-Esteban F., Tang B., Gilmore G., Alfaro E.J., Bensby T., Flaccomio E., Koposov S.E., Korn A.J., Pancino E., Recio-Blanco A., Casey A.R., Costado M.T., Franciosini E., Heiter U., Hill V., Hourihane A., Lardo C., de Laverny P., Lewis J., Monaco L., Morbidelli L., Sacco G.G., Sousa S.G., Worley C.C., Zaggia S. <Astron. Astrophys. 591, A37 (2016)> =2016A&A...591A..37J (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Clusters, open ; Abundances ; Radial velocities ; Effective temperatures Keywords: Galaxy: formation - Galaxy: disk - Galaxy: abundances - stars: abundances Abstract: The nature of the metallicity gradient inside the solar circle (RGC<8kpc) is poorly understood, but studies of Cepheids and a small sample of open clusters suggest that it steepens in the inner disk. We investigate the metallicity gradient of the inner disk using a sample of inner disk open clusters that is three times larger than has previously been studied in the literature to better characterize the gradient in this part of the disk. We used the Gaia-ESO Survey (GES) [Fe/H] values and stellar parameters for stars in 12 open clusters in the inner disk from GES-UVES data. Cluster mean [Fe/H] values were determined based on a membership analysis for each cluster. Where necessary, distances and ages to clusters were determined via comparison to theoretical isochrones. The GES open clusters exhibit a radial metallicity gradient of -0.10±0.02dex/kpc, consistent with the gradient measured by other literature studies of field red giant stars and open clusters in the range RGC∼6-12kpc. We also measure a trend of increasing [Fe/H] with increasing cluster age, as has also been found in the literature. We find no evidence for a steepening of the inner disk metallicity gradient inside the solar circle as earlier studies indicated. The age-metallicity relation shown by the clusters is consistent with that predicted by chemical evolution models that include the effects of radial migration, but a more detailed comparison between cluster observations and models would be premature. Description: Parameters for confirmed stellar members of the open clusters Berkeley 44, Berkeley 81, NGC 2516, NGC 3532, NGC 4815, NGC 6005, NGC 6633, NGC 6705, NGC 6802, Pismis 18, Trumpler 20, Trumpler 23. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 97 155 Parameters for 155 stars in 12 open clusters
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Cluster Cluster name 13- 28 A16 --- Star GES ID (HHMMSSss+DDMMSSs) 31- 41 F11.7 deg RAdeg Right ascension (J2000.0) 44- 54 F11.7 deg DEdeg Declination (J2000.0) 57- 61 F5.2 [-] [Fe/H] Metallicity 64- 67 F4.2 [-] e_[Fe/H] Uncertainty on [Fe/H] 70- 73 I4 K Teff Effective temperature 76- 78 I3 K e_Teff Uncertainty on Teff 81- 84 F4.2 [cm/s2] logg Surface gravity 87- 90 F4.2 [cm/s2] e_logg Uncertainty on surface gravity 93- 97 F5.1 km/s RV Radial velocity
Acknowledgements: Heather Jacobson, hrj(at)
(End) Patricia Vannier [CDS] 13-May-2016
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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