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J/A+A/582/A81       Gaia FGK benchmark stars: abundances      (Jofre+, 2015)

Gaia FGK benchmark stars: abundances of α and iron-peak elements. Jofre P., Heiter U., Soubiran C., Blanco-Cuaresma S., Masseron T., Nordlander T., Chemin L., Worley C.C., Van Eck S., Hourihane A., Gilmore G., Adibekyan V., Bergemann M., Cantat-Gaudin T., Delgado-Mena E., Gonzalez Hernandez J.I., Guiglion G., Lardo C., de Laverny P., Lind K., Magrini L., Mikolaitis S., Montes D., Pancino E., Recio-Blanco A., Sordo R., Sousa S., Tabernero H.M., Vallenari A. <Astron. Astrophys. 582, A81 (2015)> =2015A&A...582A..81J (SIMBAD/NED BibCode)
ADC_Keywords: Stars, nearby ; Abundances Keywords: methods: data analysis - stars: atmospheres - Galaxy: abundances Abstract: In the current era of large spectroscopic surveys of the Milky Way, reference stars for calibrating astrophysical parameters and chemical abundances are of paramount importance. We determine elemental abundances of Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Co, and Ni for our predefined set of Gaia FGK benchmark stars. By analysing high-resolution spectra with a high signal-to-noise ratio taken from several archive datasets, we combined results of eight different methods to determine abundances on a line-by-line basis. We performed a detailed homogeneous analysis of the systematic uncertainties, such as differential versus absolute abundance analysis. We also assessed errors that are due to non-local thermal equilibrium and the stellar parameters in our final abundances. Description: As in our previous work on the subject, we built a library of high- resolution spectra of the GBS, using our own observations on the NARVAL spectrograph at Pic du Midi in addition to archived data. The abundance of alpha and iron peak elements of the Gaia FGK benchmark stars is determined by combining 8 methods. The Tables indicate the elemental abundances determined for each star, element, line and method. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 48 34 List of studied stara infoline.dat 48 236 Line information (table C36) tablec1.dat 140 175 18 Sco elemental abundance measurements for different methods for each line tablec2.dat 140 153 61 Cyg A elemental abundance measurements for different methods for each line tablec3.dat 140 99 61 Cyg B elemental abundance measurements for different methods for each line tablec4.dat 140 174 alpha Cen A elemental abundance measurements for different methods for each line tablec5.dat 140 156 alpha Cen B elemental abundance measurements for different methods for each line tablec6.dat 140 40 alpha Cet elemental abundance measurements for different methods for each line tablec7.dat 140 64 alpha Tau elemental abundance measurements for different methods for each line tablec8.dat 140 149 Arcturus elemental abundance measurements for different methods for each line tablec9.dat 140 36 beta Ara elemental abundance measurements for different methods for each line tablec10.dat 140 135 beta Gem elemental abundance measurements for different methods for each line tablec11.dat 140 156 beta Hyi elemental abundance measurements for different methods for each line tablec12.dat 140 151 beta Vir elemental abundance measurements for different methods for each line tablec13.dat 140 166 delta Eri elemental abundance measurements for different methods for each line tablec14.dat 140 132 epsilon eri elemental abundance measurements for different methods for each line tablec15.dat 140 168 epsilon For elemental abundance measurements for different methods for each line tablec16.dat 140 129 epsilon Vir elemental abundance measurements for different methods for each line tablec17.dat 140 116 eta Boo elemental abundance measurements for different methods for each line tablec18.dat 140 58 gamma Sge elemental abundance measurements for different methods for each line tablec19.dat 140 135 Gmb 1830 elemental abundance measurements for different methods for each line tablec20.dat 140 158 HD 22879 elemental abundance measurements for different methods for each line tablec21.dat 140 78 HD49933 elemental abundance measurements for different methods for each line tablec22.dat 140 47 HD84937 elemental abundance measurements for different methods for each line tablec23.dat 140 114 HD107328 elemental abundance measurements for different methods for each line tablec24.dat 140 85 HD122563 elemental abundance measurements for different methods for each line tablec25.dat 140 29 HD140283 elemental abundance measurements for different methods for each line tablec26.dat 140 128 HD220009 elemental abundance measurements for different methods for each line tablec27.dat 140 133 ksi Hya elemental abundance measurements for different methods for each line tablec28.dat 140 174 mu Ara elemental abundance measurements for different methods for each line tablec29.dat 140 160 mu Cas elemental abundance measurements for different methods for each line tablec30.dat 140 75 mu Leo elemental abundance measurements for different methods for each line tablec31.dat 140 115 Procyon elemental abundance measurements for different methods for each line tablec32.dat 140 25 psi Phe elemental abundance measurements for different methods for each line tablec33.dat 140 177 Sun elemental abundance measurements for different methods for each line tablec34.dat 140 178 tau Cet elemental abundance measurements for different methods for each line
See also: J/A+A/564/A133 : Gaia FGK benchmark stars: metallicity (Jofre+, 2014) J/A+A/566/A98 : The Gaia Benchmark Stars - Library (Blanco-Cuaresma+, 2014) Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh ? Simbad right ascension (J2000) 4- 5 I2 min RAm ? Simbad right ascension (J2000) 7- 11 F5.2 s RAs ? Simbad right ascension (J2000) 13 A1 --- DE- ? Simbad declination sign (J2000) 14- 15 I2 deg DEd ? Simbad declination (J2000) 17- 18 I2 arcmin DEm ? Simbad declination (J2000) 20- 23 F4.1 arcsec DEs ? Simbad declination (J2000) 25- 35 A11 --- Star Star name 37- 48 A12 --- FileName Name of the table with elemental abundances
Byte-by-byte Description of file (# headlines): infoline.dat
Bytes Format Units Label Explanations
1- 7 F7.2 0.1nm lambda Wavelength of line used in the abundance determination 10 I1 --- Ion Ionisation stage of the line 14- 19 F6.3 --- loggf Oscillation strength of the line 23- 27 F5.3 eV EP Excitation potential of the line 31- 33 A3 --- GESflag Quality flag of Gaia-ESO line list 36 A1 --- FG-dwarf [YN-] Golden flag for stars in group of FG-dwarfs (1) 39 A1 --- K-dwarf [YN-] Golden flag for stars in group of K-dwarfs (1) 42 A1 --- metal-poor [YN-] Golden flag for stars in group of metal-poor stars (1) 45 A1 --- FGK-giant [YN-] Golden flag for stars in group of FGK-giants (1) 48 A1 --- M-giant [YN-] Golden flag for stars in group of M-giants (1)
Note (1): Golden flag as follows: Y = yes it is golden N = no it is no golden - = the line was not used
Byte-by-byte Description of file (# headlines): tablec*.dat
Bytes Format Units Label Explanations
1- 2 I2 --- El Atomic number of element 6- 12 F7.2 0.1nm lambda Wavelength of line used in the abundance determination 16- 21 F6.3 [-] log(eps) ?=-9.99 Abundance obtained for the line after combining methods (1) 25- 30 F6.3 --- NLTE ?=-9.99 NLTE correction for that line (1) 33 A1 --- --- [|] Separation on table between total values and method-by-method quantities (1) 36- 41 F6.2 0.1pm EWpor ?=-9.99 Equivalent width obtained by the Porto method (1) 44- 49 F6.2 0.1pm EWepi ?=-9.99 Equivalent width obtained by the EPINARBO method (1) 52- 57 F6.2 0.1pm EWbol ?=-9.99 Equivalent width obtained by the Bologna method (1) 60- 65 F6.2 0.1pm EWucm ?=-9.99 Equivalent width obtained by the UCM method (1) 68- 73 F6.2 0.1pm EWulb ?=-9.99 Equivalent width obtained by the ULB method (1) 76 A1 --- --- [|] Separation on table between equivalent width values and abundances (1) 80- 84 F5.2 --- ispec ?=-9.99 Abundance obtained by the iSpec method (1) 88- 92 F5.2 --- por ?=-9.99 Abundance obtained by the Porto method (1) 96-100 F5.2 --- gau ?=-9.99 Abundance obtained by the Gauguin method (1) 104-108 F5.2 --- epi ?=-9.99 Abundance obtained by the EPINARBO method (1) 112-116 F5.2 --- bol ?=-9.99 Abundance obtained by the Bologna method (1) 120-124 F5.2 --- syn ?=-9.99 Abundance obtained by the synspec method (1) 128-132 F5.2 --- ucm ?=-9.99 Abundance obtained by the UCM method (1) 136-140 F5.2 --- ulb ?=-9.99 Abundance obtained by the ULB method (1)
Note (1): if a method had no abundance measurement of a given line, the value was set to -9.99, if the method did not analyse the line, the value was set to 0.0.
Acknowledgements: Paula Jofre, pjofre(at)ast.cam.ac.uk Institute of Astronomy, University of Cambridge
(End) Paula Jofre [Univ. of Cambridge], Patricia Vannier [CDS] 22-Jul-2015
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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