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J/A+A/503/541  Neutral Li in late-type stars non-LTE calculations  (Lind+, 2009)

Departures from LTE for neutral Li in late-type stars. Lind K., Asplund M., Barklem P.S. <Astron. Astrophys. 503, 541 (2009)> =2009A&A...503..541L
ADC_Keywords: Stars, late-type ; Abundances ; Atomic physics Keywords: stars: abundances - stars: late-type - line: formation Abstract: We perform non-LTE calculations of lithium in late-type stars for a wide range of stellar parameters, including quantum mechanical cross-sections for collisions with neutral hydrogen and the negative hydrogen ion. Non-LTE abundance corrections for the lithium resonance line at 670.7nm and the subordinate line at 610.3nm, are calculated using 1D MARCS model atmospheres spanning a large grid in effective temperature, surface gravity, and metallicity, and lithium abundance. The competing effects of ultraviolet over-ionization and photon losses in the resonance line govern the behaviour of the non-LTE effects with stellar parameters and lithium abundance. The size and sign of the non-LTE abundance corrections vary significantly over the grid for the 670.7nm line, but are typically positive and below 0.15dex for the 610.3nm line. The new collisional data play a significant role in determining the abundance corrections. Description: Non-LTE abundance corrections and equivalent widths for atmospheric models in the stellar parameter range Teff=[4000,8000]K, log(g)=[1.0,5.0], [Fe/H]=[0.0,-3.0], and microturbulence [1.0,5.0]km/s. The lithium abundance ranges between A(Li)=[-0.3,4.2]. An IDL-code for interpolation between table-values can be obtained on request to klind(at)eso.org. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 47 5431 Non-LTE abundance corrections and equivalent widths for the 670.7nm line table3.dat 47 4388 Non-LTE abundance corrections and equivalent widths for the 610.3nm line
See also: J/PASJ/57/45 : Lithium abundances of F-K stars (Takeda+, 2005) J/A+A/503/545 : NGC 6397 Li depletion and Li-Na anti-correlation (Lind+, 2009) Byte-by-byte Description of file: table2.dat table3.dat
Bytes Format Units Label Explanations
1- 4 I4 K Teff Effective temperature 7- 9 F3.1 [cm/s2] logg Surface gravity 12- 15 F4.1 [Sun] [Fe/H] Metallicity 18- 20 F3.1 km/s Vturb Microturbulence velocity 23- 26 F4.1 [Sun] A(Li) LTE lithium abundance 29- 33 F5.2 [Sun] Delta Non-LTE abundance correction (1) 36- 40 F5.2 pm W(LTE) LTE equivalent width 43- 47 F5.2 pm W(NLTE) Non-LTE equivalent width
Note (1): Corrections are given for equivalent widths in the range 0.01-100pm.
Acknowledgements: Karin Lind, klind(at)eso.org
(End) Karin Lind [ESO, Germany], Patricia Vannier [CDS] 02-Jun-2009
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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