2008/10/27 by V. A. Oliveira, Vinicius de Abreu Oliveira, M. V. F. Copetti +1
Chemistry · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Atomic physics #Chemistry #Context (archaeology) #Electron #Electron temperature #Excited state #Geology #Heavy element #Interpretation (philosophy) #Nuclear physics #Paleontology #Philosophy #Physics #Planetary nebula #Recombination #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:200810542
6 pages, 5 figures, 2 tables
openalex publication_date 2008/10/27 · arxiv created 2008/10/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Context. The existence and origin of large spatial temperature fluctuations in H ii regions and planetary nebulae are assumed to explain the differences between the heavy element abundances inferred from collisionally excited and recombination lines, although this interpretation remains significantly controversial.