SIMBAD references

1994A&A...289..740K - Astronomy and Astrophysics, volume 289, 740-748 (1994/9-3)

The galactic abundance gradients traced by B-type stars.

KAUFER A., SZEIFERT T., KRENZIN R., BASCHEK B. and WOLF B.

Abstract (from CDS):

We obtained high S/N, high resolution spectra of 16 B-type main sequence stars in young open clusters and in HII regions with galactocentric distances between 7 and 16 kpc. Chemical abundances for this sample were derived using line-blanketed LTE model atmospheres and line formation in LTE. Our analyses together with published data from similar analyses of B-type stars result in flat gradients or even no gradients at all for oxygen and nitrogen in the outer part of the galactic disk. It is conjectured that the larger metallicity gradients cited for HII regions are essentially due to a steepening within the inner 6 kpc towards the galactic center.

Abstract Copyright:

Journal keyword(s): stars: abundances, early type - Galaxy: abundances, evolution

VizieR on-line data: <Available at CDS (J/A+A/289/740): table2 table6 table7 table8 tables.tex>

Simbad objects: 20

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