The radial distribution of oxygen in disk galaxies

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The shape of the oxygen abundance profile is examined for seven nearby spiral galaxies in which at least 15 H II regions have been observed. The radial abundance profile for three of these galaxies has a distinct change in slope. The others show no deviation from a single scale-length exponential. This behavior is explained within the framework of the star-forming viscous disk model of galaxy evolution. A prediction is made that radial abundance profiles of noninteracting unbarred spiral galaxies change slope at the radius where the rotation curve changes from linearly rising to flat. For barred and interacting galaxies the situation is complicated by additional mixing mechanisms of the interstellar medium.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume390
Issue number2 PART 2
StatePublished - May 10 1992

Fingerprint

disk galaxies
radial distribution
spiral galaxies
oxygen
profiles
slopes
galaxies
barred galaxies
interacting galaxies
H II regions
deviation
stars
radii
curves
prediction
predictions
distribution

Keywords

  • Galaxies: abundances
  • Galaxies: evolution
  • H II regions

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

The radial distribution of oxygen in disk galaxies. / Zaritsky, Dennis F.

In: Astrophysical Journal, Vol. 390, No. 2 PART 2, 10.05.1992.

Research output: Contribution to journalArticle

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