178 citations · 539 across the 16 of their papers we have counts for
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H2 Temperatures in the Crab Nebula
E. D. Loh, J. A. Baldwin, G. J. Ferland +4
We used K-band spectra to measure the H2 excitation temperatures in six molecular knots associated with the filaments in the Crab Nebula. The temperatures are quite high - in the r…
The curious conundrum regarding sulfur and oxygen abundances in planetary nebulae
R. B. C. Henry, A. Speck, A. I. Karakas +1
We carefully consider numerous explanations for the sulfur abundance anomaly in planetary nebulae. No one rationale appears to be satisfactory, and we suggest that the ultimate exp…
Structure and Feedback in 30 Doradus II. Structure and Chemical Abundances
Eric W. Pellegrini, Jack A. Baldwin, Gary. J. Ferland
We use our new optical-imaging and spectrophotometric survey of key diagnostic emission lines in 30 Doradus, together with CLOUDY photoionization models, to study the physical cond…