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J/MNRAS/418/863     NLTE corrections for Mg and Ca lines   (Merle+ 2011)

A grid of non-local thermodynamic equilibrium corrections for magnesium and calcium in late-type giant and supergiant stars: application to Gaia Merle T., Thevenin F., Pichon B., Bigot L. <Mon. Not. R. Astron. Soc. 418, 863 (2011)> =2011MNRAS.418..863M
ADC_Keywords: Stars, late-type; Stars, giant; Stars, supergiant; Stars, metal-deficient; Equivalent widths; Abundances; Atomic physics Keywords: line: formation; radiative transfer; stars:abundances; stars: atmospheres; stars: late-type Abstract: We investigate NLTE effects for magnesium and calcium in the atmospheres of late-type giant and supergiant stars. The aim of this paper is to provide a grid of NLTE/LTE equivalent width ratios W/W* of Mg and Ca lines for the following range of stellar parameters: Teff in [3500,5250]K, log(g) in [0.5,2.0]dex and [Fe/H] in [-4.0,0.5]dex. We use realistic model atoms with the best physics available and taking into account the fine structure. The Mg and Ca lines of interest are in optical and near IR ranges. A special interest concerns the lines in the Gaia spectrograph (RVS) wavelength domain [847,874]nm. The NLTE corrections are provided as function of stellar parameters in an electronic table as well as in a polynomial form for the Gaia/RVS lines. Description: Non-LTE corrections for Mg and Ca lines in the stellar parameter range Teff=[3500,5250]K, log(g)=[0.5, 2.0], [Fe/H]=[-4.0,0.5] and [α/Fe]=[0.0,0.4]. The W/W* ratio can be applied to the measured equivalent widths to determine NLTE abundance with classical LTE radiative transfer codes. 45 files for 45 lines of MgI, CaI and CaII are given. In each file, 453 rows at max for a grid of 453 model atmospheres. Only models with W≥1mÅ are given. Only models with 0.0<W/W*=<5 are given. For the lines in the Gaia/RVS, the gaia_lines.f90 code give the W/W* as a function of Teff, log(g) and [Fe/H] using polynomial fits. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file mgi4167.dat 41 452 MgI 4167 Angstroem line mgi4571.dat 41 427 MgI 4571 Angstroem line mgi4702.dat 41 452 MgI 4702 Angstroem line mgi4730.dat 41 389 MgI 4730 Angstroem line mgi5167.dat 41 453 MgI 5167 Angstroem line mgi5172.dat 41 453 MgI 5172 Angstroem line mgi5183.dat 41 453 MgI 5183 Angstroem line mgi5528.dat 41 452 MgI 5528 Angstroem line mgi5711.dat 41 426 MgI 5711 Angstroem line mgi7657.dat 41 400 MgI 7657 Angstroem line mgi8473.dat 41 290 MgI 8473 Angstroem line mgi8715.dat 41 303 MgI 8710, 8712 and 8717 Angstroem lines mgi8736.dat 41 388 MgI 8736 Angstroem line mgi8806.dat 41 452 MgI 8806 Angstroem line mgi8923.dat 41 357 MgI 8923 Angstroem line mgi8997.dat 41 310 MgI 8997 Angstroem line mgi10312.dat 41 293 MgI 10312 Angstroem line mgi11828.dat 41 452 MgI 11828 Angstroem line cai4226.dat 41 453 CaI 4226 Angstroem line cai4425.dat 41 453 CaI 4425 Angstroem line cai4578.dat 41 415 CaI 4578 Angstroem line cai5512.dat 41 416 CaI 5512 Angstroem line cai5867.dat 41 362 CaI 5867 Angstroem line cai6102.dat 41 445 CaI 6102 Angstroem line cai6122.dat 41 453 CaI 6122 Angstroem line cai6161.dat 41 396 CaI 6161 Angstroem line cai6162.dat 41 453 CaI 6162 Angstroem line cai6166.dat 41 400 CaI 6166 Angstroem line cai6169a.dat 41 416 CaI 6169.03 Angstroem line cai6169b.dat 41 433 CaI 6169.56 Angstroem line cai6455.dat 41 396 CaI 6455 Angstroem line cai6572.dat 41 401 CaI 6572 Angstroem line cai7326.dat 41 429 CaI 7326 Angstroem line cai8525.dat 41 236 CaI 8525 Angstroem line cai8583.dat 41 262 CaI 8583 Angstroem line cai8633.dat 41 274 CaI 8633 Angstroem line caii3933.dat 41 453 CaII 3933 Angstroem line caii3968.dat 41 453 CaII 3968 Angstroem line caii8248.dat 41 344 CaII 8248 Angstroem line caii8498.dat 41 453 CaII 8498 Angstroem line caii8542.dat 41 453 CaII 8542 Angstroem line caii8662.dat 41 453 CaII 8662 Angstroem line caii8912.dat 41 399 CaII 8912 Angstroem line caii9854.dat 41 286 CaII 9854 Angstroem line caii119a.dat 41 423 CaII 11949 Angstroem line gaia_lin.f90 150 283 Interpolation of W/W* for Gaia lines as functions of Teff, log(g) and [Fe/H]
Byte-by-byte Description of file: *.dat
Bytes Format Units Label Explanations
1- 5 I5 K Teff [3500/5250] Effective temperature 7- 9 F3.1 [cm/s2] logg [0.5/2] Surface gravity 11- 15 F5.2 [Sun] [Fe/H] [-4/0.5] Metallicity 18- 21 F4.2 [Sun] [a/Fe] [0/0.4] Enhancement of α elements (1) 23- 29 I7 0.1pm W NLTE equivalent width in Angstrom (2) 32- 35 F4.2 --- W/W* NLTE/LTE equivalent width (3) 37- 41 F5.2 [Sun] Delta ? NLTE abundance correction (4)
Note (1): [α/Fe] = [α/H] - [Fe/H] Note (2): computed with LTE abundance value, given only if W≥0.1pm (1mÅ) Note (3): NLTE/LTE ratios W/W* given in the range 0--5 Note (4): Δ[El/H] = [El/H]NETL - [El/H]ETL
Author's address: Thibault Merle <thibault.merle(at)oca.eu> History: * 04-May-2012: Prepared by Thibault Merle [OCA, France] * 16-May-2012: units of equivalent widths fixed (milli-Angstroems instead of Angstroems)
(End) Thibault Merle [OCA, France] 2012-May-04
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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