4

METAL-RICH PLANETARY NEBULAE IN THE OUTER REACHES OF M31

Year:
2013
Language:
english
File:
PDF, 709 KB
english, 2013
13

Gallery of Planetary Nebula Spectra

Year:
2006
Language:
english
File:
PDF, 121 KB
english, 2006
26

Morphology and Composition of the Helix Nebula

Year:
1999
Language:
english
File:
PDF, 1.09 MB
english, 1999
40

Sulfur, Chlorine & Argon Abundances in Galactic PNe

Year:
2003
Language:
english
File:
PDF, 162 KB
english, 2003