SIMBAD references

2013MNRAS.428.3252A - Mon. Not. R. Astron. Soc., 428, 3252-3261 (2013/February-1)

Barium abundances in Cepheids.

ANDRIEVSKY S.M., LEPINE J.R.D., KOROTIN S.A., LUCK R.E., KOVTYUKH V.V. and MACIEL W.J.

Abstract (from CDS):

We derived the barium atmospheric abundances for a large sample of Cepheids, comprising 270 stars. The sample covers a large range of Galactocentric distances, from about 4 to 15 kpc, so it is appropriate to investigate the existence of radial barium abundance gradients in the Galactic disc. In fact, this is the first time that such a comprehensive analysis of the distribution of barium abundances in the Galactic disc has been carried out. As a result, we conclude that the Ba abundance distribution can be characterized by a zero gradient. This result is compared with derived gradients for other elements, and some reasons are briefly discussed for the independence of the barium abundances from Galactocentric distances.

Abstract Copyright: © 2012 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2012)

Journal keyword(s): stars: abundances - stars: variables: Cepheids - Galaxy: disc - Galaxy: evolution

VizieR on-line data: <Available at CDS (J/MNRAS/428/3252): table3.dat>

Simbad objects: 237

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2019.12.12-06:40:33

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