The ISO* galactic metallicity gradient revisited

U. Giveon, C. Morisset, A. Sternberg

Research output: Contribution to journalArticlepeer-review

Abstract

Two independent groups (Giveon et al. 2002; Martín-Hernández et al. 2002) have recently investigated the Galactic metallicity gradient as probed by ISO observations of mid-infrared emission-lines from HII regions. We show that the different gradients inferred by the two groups are due to differing source selection and differing extinction corrections. We show that both data sets in fact provide consistent results if identical assumptions are made in the analysis. We present a consistent set of gradients in which we account for extinction and variation in electron temperature across the Galactic disk.

Original languageEnglish
Pages (from-to)501-503
Number of pages3
JournalAstronomy and Astrophysics
Volume392
Issue number2
DOIs
StatePublished - Sep 2002

Keywords

  • Galaxy: abundances
  • ISM: HII regions

Fingerprint

Dive into the research topics of 'The ISO* galactic metallicity gradient revisited'. Together they form a unique fingerprint.

Cite this