Galactic abundance gradients from B-type stars in young clusters and associations

Details Galactic abundance gradients from B-type stars in young clusters and associations Galactic abundance gradients from B-type stars in young clusters and associations

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...232..437f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 232, no. 2, June 1990, p. 437-442. Research supported by SERC.

Astronomy and Astrophysics

Astrophysics

50

Abundance, B Stars, Open Clusters, Chemical Composition, Metallicity, Stellar Atmospheres, Stellar Spectrophotometry

Scientific paper

Spectroscopic observations of 20 B-type stars in four young stellar clusters have been analyzed using LTE model-atmosphere techniques. Similar chemical compositions are deduced from different stars in the same cluster; as the stars are relatively unevolved, these compositions should reflect that of the progenitor interstellar material. Although the clusters have galactocentric radii Rg, ranging from 5.5 to 10.3 kpc, no systematic abundance variations are found with Rg for any of the elements studied.

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