The co-existence of spiral structure and abundance gradients

Details The co-existence of spiral structure and abundance gradients The co-existence of spiral structure and abundance gradients

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.261l..17e&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 261, no. 3, p. L17-L19.

Astronomy and Astrophysics

Astronomy

35

Chemical Composition, Galactic Structure, Spiral Galaxies, Abundance, Galactic Evolution

Scientific paper

Steep abundance gradients in gas-rich disc galaxies seem to require the presence of unbarred spiral structure. Abundance gradients disappear at the same absolute magnitude that spiral structure ceases, and are considerably shallower in spirals showing a strong bar. This suggests a definite link between the existence of unbarred spiral structure and the origin of abundance gradients.

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