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J/A+A/468/663       Li abundances in solar-analog stars      (Takeda+, 2007)

Behaviors of Li abundances in solar-analog stars: Evidence for line-width dependence. Takeda Y., Kawanomoto S., Honda S., Ando H., Sakurai T. <Astron. Astrophys. 468, 663 (2007)> =2007A&A...468..663T
ADC_Keywords: Stars, late-type ; Stars, nearby ; Abundances ; Equivalent widths Keywords: stars: abundances - stars: atmospheres - stars: fundamental parameters - stars: late-type - Sun: fundamental parameters Abstract: It is known that the surface lithium abundances of field solar-analog G dwarfs show a large dispersion of ≳2dex (among which our Sun is located at the lower end) despite the similarity of stellar parameters, and planet-host stars tend to show comparatively lower Li abundances in the narrow Teff range. To investigate the reason for these phenomena, an extensive study of Li abundances and their dependence on stellar parameters was carried out for a homogeneous sample of 118 selected solar analogs based on high-dispersion spectra obtained at Okayama Astrophysical Observatory. Description: The atmospheric parameters were spectroscopically determined by using the equivalent widths of FeI and FeII lines, the ages/masses were estimated from stellar evolutionary tracks, and the width of the macrobroadening (rotation plus macroturbulence) function as well as Li abundances (ALi) were established by spectrum-fitting analyses. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 115 118 Results of the kinematic parameters table3.dat 54 18445 EWs of Fe I/Fe II lines and resulting Fe abundances table4.dat 132 118 Results of the atmospheric parameters, mass and age table5.dat 93 118 Abundances and macro-broadening derived from 6080-6089 fit table6.dat 32 118 Li abundance results from LiI 6708 line profile fit
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) J/AJ/105/2299 : Li abundance of solar-type stars. II. (Soderblom+, 1993) J/A+A/371/943 : Lithium abundances for 185 main-sequence stars (Chen+, 2001) J/A+A/409/251 : Li abundances and velocities in F and G stars (Mallik+, 2003) J/MNRAS/349/757 : Masses, ages and metallicities of F-G dwarfs (Lambert+, 2004) J/PASJ/57/45 : Lithium abundances of F-K stars (Takeda+, 2005) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP (Cat. I/239) number 9- 10 I2 h RAh Right ascension ICRS (J1991.25) (1) 12- 13 I2 min RAm Right ascension ICRS (J1991.25) (1) 15- 19 F5.2 s RAs Right ascension ICRS (J1991.25) (1) 21 A1 --- DE- Declination sign ICRS (J1991.25) (1) 22- 23 I2 deg DEd Declination ICRS (J1991.25) (1) 25- 26 I2 arcmin DEm Declination ICRS (J1991.25) (1) 28- 31 F4.1 arcsec DEs Declination ICRS (J1991.25) (1) 35- 40 F6.2 mas plx Trigonometric parallax (1) 42- 49 F8.2 mas/yr pmRA Proper motion in alpha direction (1) 51- 58 F8.2 mas/yr pmDE Proper motion in delta direction (1) 60- 65 F6.1 km/s HRV Heliocentric radial velocity (from table 1) 67- 72 F6.3 kpc Rm Mean galactocentric distance 74- 79 F6.3 kpc zm Maximum separation from the galactic plane 82- 86 F5.3 --- e Orbital eccentricity 88- 93 F6.1 km/s Ulsr Space velocity in radial direction relative to LSR 95-100 F6.1 km/s Vlsr Space velocity in tangential direction relative to LSR 102-107 F6.1 km/s Wlsr Space velocity in vertical direction relative to LSR 111-115 F5.1 km/s vlsr Speed relative to LSR [= sqrt(U2+V2+W2)]
Note (1): Parameters form Hipparcos catalogue, Cat. I/239.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Star Star name (Sun/Moon or HIP NNNNNN) 12- 15 I4 --- Line Line No. (cf. Takeda et al. 2005, Cat. J/PASJ/57/27) 17- 21 F5.2 --- Elem 26.00 for Fe I, 26.01 for Fe II 23- 30 F8.3 0.1nm lambda Line wavelength 32- 36 F5.3 eV EP(low) Excitation potential of the lower level 38- 43 F6.3 --- loggf log(gf) value 45- 49 F5.1 0.1pm EW ?=0 Fe line equivalent width 51- 54 F4.2 --- A(Fe) ?=0 Line-by-line Fe abundance
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP (Cat. I/239) number 8- 13 F6.1 K Teff (standard) effective temperature 15- 19 F5.3 [cm/s2] logg (standard) logarithmic surface gravity 21- 24 F4.2 km/s vt (standard) microturbulent velocity 26- 31 F6.3 [Sun] [Fe/H]s (standard) Fe abundance (A-7.50) 33- 38 F6.1 K DTeff Differential Teff relative to the Sun (Teff=5761.0) 40- 45 F6.3 [cm/s2] Dlogg Differential logg relative to the Sun (logg=4.435) 47- 51 F5.2 km/s Dvt Differential microturbulent velocity relative to the Sun (vt=1.00) 53- 58 F6.3 --- D[Fe/H] Differential [Fe/H] relative to the Sun ([Fe/H]=-0.007) 60- 63 F4.2 mag VMAG Absolute visual magnitude (from table 1) 65- 69 F5.2 mag BC Bolometric correction (Alonso et al.'s, 1995A&A...297..197A, table 4) 71- 74 F4.2 mag Mbol Bolometric magnitude (=VMAG+BC) 76- 81 F6.3 [solLum] logL Logarithmic luminosity 83- 86 F4.2 solMass Mass Stellar mass derived from evolution track 88- 92 F5.2 solMass E_Mass Possible error in Mass on the upper side 94- 97 F4.2 solMass e_Mass Possible error in Mass on the lower side 99-102 F4.2 solMass M(iso) Stellar mass derived from isochrones 104-107 F4.2 [cm/s2] logg(TLM) Theorerical logg derived from Teff, L, and Mass 109-113 F5.2 [yr] logAge Stellar age derived from evolutionary track (adopted) 115-119 F5.2 [yr] E_logAge Possible error in logAge on the upper side 121-124 F4.2 [yr] e_logAge Possible error in logAge on the lower side 126 A1 --- q_logAge [ABC] Reliability of age(trk) (A: high, B: moderate, C: poor) 128-132 F5.2 [yr] logAge(iso) Stellar age derived from isochrones (for reference)
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP (Cat. I/239) number 9- 13 F5.2 km/s Vrm Macrobroadening velocity (rotation + macroturbulence) 15- 20 F6.3 --- A(Si) Si abundance derived from 6080-6089 fit 21- 26 F6.3 --- A(Ti) Ti abundance derived from 6080-6089 fit 27- 32 F6.3 --- A(V) V abundance derived from 6080-6089 fit 33- 38 F6.3 --- A(Fe) Fe abundance derived from 6080-6089 fit 39- 44 F6.3 --- A(Co) Co abundance derived from 6080-6089 fit 45- 50 F6.3 --- A(Ni) Ni abundance derived from 6080-6089 fit 53- 58 F6.3 [Sun] [Si/H] A(Si)[star]-A(Si)[Sun/Moon=7.455] 60- 65 F6.3 [Sun] [Ti/H] A(Ti)[star]-A(Ti)[Sun/Moon=4.986] 67- 72 F6.3 [Sun] [V/H] A(V)[star] -A(V)[Sun/Moon=3.908] 74- 79 F6.3 [Sun] [Fe/H] A(Fe)[star]-A(Fe)[Sun/Moon=7.534] 81- 86 F6.3 [Sun] [Co/H] A(Co)[star]-A(Co)[Sun/Moon=4.798] 88- 93 F6.3 [Sun] [Ni/H] A(Ni)[star]-A(Ni)(Sun/Moon=6.367]
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP HIP (Cat. I/239) number 9 A1 --- q_EW(Li) [abx] Quality flag (a: well, b: poor, x: indeterminable) 12- 16 F5.1 mA EW(Li) EW(Li 6708) computed from A(LTE) (fitting solution) 20 A1 --- l_A(Li) [<] for the upper-limit case 21- 25 F5.2 --- A(Li) Non-LTE Li abundance (=A(LTE)+d(NLTE)) 28- 32 F5.2 --- d(NLTE) ? non-LTE correction (not given for the upper-limit case)
Acknowledgements: Yoichi Takeda, takedayi(at)cc.nao.ac.jp
(End) Patricia Vannier [CDS] 02-Apr-2007
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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