Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-07
Astron.Astrophys. 417 (2004) 1055-1062
Astronomy and Astrophysics
Astrophysics
accepted for publication in Astronomy and Astrophysics, 8 pages, 6 figures, data will be published electronically
Scientific paper
10.1051/0004-6361:20034324
A library of 183588 synthetic spectra based on Kurucz's ATLAS9 models is presented for the far red spectral interval (7653 -- 8747\AA). It is characterized by 3500 K <= T_eff <= 47500 K, 0.0 <= log g <= 5.0, -3.0 <= [M/H] <= +0.5, 0 <= V_rot <= 500 km/s, xi = 2 km/s. The whole grid of spectra is calculated for resolving powers 8500, 11500 and 20000. A section of the grid is also computed for [alpha/Fe]=+0.4 and for microturbulent velocities 0 and 4 km/s. The library covers the wavelength ranges and resolutions of the two ambitious spectroscopic surveys by the ground experiment RAVE and the space mission GAIA. Cross-sections across the multi-dimensional data-cube are used to illustrate the behaviour of the strongest spectral lines. Interpretation of real data will have to include interpolation to grid substeps. We present a simple estimate of the accuracy of such a procedure.
Castelli Fiorella
Munari Ulisse
Zwitter Tomaz
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