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 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 stars
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:
III/281 : Gaia FGK benchmark stars v2.1 (Jofre+, 2018)
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)
J/A+A/592/A70 : Gaia FGK stars: low-metallicities candidates (Hawkins+, 2016)
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 (#): 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 (#): 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
References:
Heiter et al., Paper I 2015A&A...582A..49H 2015A&A...582A..49H
Blanco-Cuaresma et al., Paper II 2014A&A...566A..98B 2014A&A...566A..98B, Cat. J/A+A/566/A98
Jofre et al., Paper III 2014A&A...564A.133J 2014A&A...564A.133J, Cat. J/A+A/564/A133
Jofre et al., Paper IV 2015A&A...582A..81J 2015A&A...582A..81J, Cat. J/A+A/582/A81
Hawkins et al., Paper V 2016A&A...592A..70H 2016A&A...592A..70H, Cat. J/A+A/592/A70
Jofre et al., 2017A&A...601A..38J 2017A&A...601A..38J
(End) Paula Jofre [Univ. of Cambridge], Patricia Vannier [CDS] 22-Jul-2015