A library of high-resolution synthetic stellar spectra

in the optical interval

E. Bertone, A. Buzzoni, M. Chavez, L. H. Rodriguez-Merino

BLUERED is an extended theoretical library of 832 synthetic stellar spectra, covering the optical range from 3500 to 7000 Å at a spectral resolving power R = λ/Δ λ = 500,000.
BLUERED is a project which involved the Instituto Nacional de Astrofisica, Optica y Electronica (INAOE) of Puebla (Mexico), the Brera Astronomical Observatory in Milan (Italy), and the Bologna Astronomical Observatoy (Italy) and it has been the product of the Ph.D. Thesis of Emanuele Bertone (2002).
The library, based on the ATLAS9 model atmospheres by (Kurucz 1995), has been computed using the SYNTHE code (Kurucz 1993b) on Unix Digital machines. The grid spans a large volume in three-dimensional parameters space: the effective temperature ranges from 4000 to 50,000 K and the surface gravity spans from 0.0 to 5.0 dex at six different solar-scaled metallicity values ([M/H] = -3.0, -2.0, -1.0, -0.3, +0.0, +0.3).
Please, go and visit the reference page for more info and full technical details about the library.
BLUERED can be profitably applied to different research fields dealing both with the study of individual stars and stellar aggregates.
This grid is complementary to the UVBLUE library, which extends over the far and mid-ultraviolet interval.

The full resolution spectra at R=500,000 can be downloaded individually. Each gzip-ed ASCII file has a size of about 2 to 4 Mbytes; it contains three columns: the wavelength, the normalized emerging flux density per unit wavelength, and the residual flux. The number of wavelength points is 346645 at steps of Δ λ = λ/R.
Given the huge memory size, the full version of BLUERED is only available upon request on CD/DVD support (in this case, please register here and post a mail from the download page, as indicated). We provide here a slightly degraded version of the library, at fixed resolving power, R = 10,000, together with two useful IDL routines to read the data and further degrade the resolving power according to the user's specific requirements.

Download the library

(latest release: January 2009)

To Alberto Buzzoni's Homepage
To Emanuele Bertone's Homepage

EB/Jan 2009