SIMBAD references

2003A&A...404..661B - Astronomy and Astrophysics, volume 404, 661-668 (2003/6-3)

A grid of synthetic spectra and indices Fe5270, Fe5335, Mgb and Mg2 as a function of stellar parameters and [α/Fe].

BARBUY B., PERRIN M.-N., KATZ D., COELHO P., CAYREL R., SPITE M. and VAN'T VEER-MENNERET C.

Abstract (from CDS):

We have computed a grid of synthetic spectra in the wavelength range λλ 4600-5600Å using revised model atmospheres, for a range of atmospheric parameters and values of [α-elements/Fe]=0.0 and +0.4. The Lick indices Fe5270, Fe5335, Mgb and Mg2 are measured on the grid spectra for FWHM=2 to 8.3Å. Relations between the indices Fe5270, Fe5335 and Mg2 and the stellar parameters effective temperature Teff, log g, [Fe/H] and [α/Fe], valid in the range 4000≤Teff≤7000K, are presented. These fitting functions are given for FWHM=3.5 and 8.3Å. The indices were also measured for a list of 97 reference stars with well-known stellar parameters observed at ESO and OHP, and these are compared to the computed indices. Finally, a comparison of the indices measured on the observed spectra and those derived from the fitting functions based on synthetic spectra is presented.

Abstract Copyright:

Journal keyword(s): stars: abundances

VizieR on-line data: <Available at CDS (J/A+A/404/661): stars tablea tableb1 tableb2 tableb3>

CDS comments: In stars.dat : M71 NN = NGC 6838 10NN.

Simbad objects: 89

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2019.08.25-05:37:55

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