Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-08-02
Astronomy and Astrophysics
Astrophysics
18 pages, 5 encapsulated postscript figures, LaTeX, uses Astronomy and Astrophysics macro aa.cls, graphics package, to be publ
Scientific paper
10.1051/0004-6361:20021035
As a continuation of our previous work, which concerned the radial abundance distribution in the galactic disc over the distances 4-10 kpc this paper presents the first results on the metallicicty in the outer disc (RG > 10 kpc). Based on high-resolution spectra obtained for 19 distant Cepheids we sampled galactocentric distances from 10 to 12 kpc. Combined with the results of our previous work on the inner and middle parts of the galactic disc, the present data enable one to study the structure of the radial abundance distribution over a large baseline. In particular, we find indications of a discontinuity in the radial abundance distribution for iron as well as a number of the other elements. The discontinuity is seen at a galactocentric distance RG = 10 kpc. This finding supports the results reported earlier by Twarog et al. (1997).
Andrievsky Sergei. M.
Beletsky Yu. V.
Kovtyukh Valery V.
Lépine Jacques R. D.
Luck Earle R.
No associations
LandOfFree
Using Cepheids to determine the galactic abundance gradient. III.First results for the outer disc does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Using Cepheids to determine the galactic abundance gradient. III.First results for the outer disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using Cepheids to determine the galactic abundance gradient. III.First results for the outer disc will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-441735