The curious conundrum regarding sulfur abundances in planetary nebulae
Sulfur abundances derived from optical emission line measurements and ionization correction factors (ICFs) in planetary nebulae are systematically lower than expected for the objects' metallicities. We have carefully considered a large range of explanations for this "sulfur anomaly," including: (1) correlations between the size of the sulfur deficit and numerous nebular and central star properties, (2) ICFs which undercorrect for unobserved ions, (3) effects of dielectronic recombination on the...[Show more]
|Collections||ANU Research Publications|
|Source:||Astrophysical Journal, The|
|01_Henry_The_curious_conundrum_2012.pdf||994.39 kB||Adobe PDF||Request a copy|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.