99 citations · 289 across the 14 of their papers we have counts for
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Low-ionization structures in planetary nebulae -- IV. The molecular hydrogen counterpart
M. B. Mari, S. Akras, D. R. Gonçalves
Context. Low-ionization structures (LISs), found in all morphological types of planetary nebulae (PNe), are small-scale features prominent in emission from low-ionization species s…
Photometric candidate selection and spectroscopic confirmation of new PNe and SySts in the Galactic plane
Giovanna Liberato, Denise R. Gonçalves, Luis A. Gutiérrez-Soto +1
About 3,500 planetary nebulae (PNe) are currently known in the Milky Way, which shows a great discrepancy with the expected number for these objects, regardless of the reference us…
Low-ionization structures in planetary nebulae -- III. The statistical analysis of physico-chemical parameters and excitation mechanisms
M. Belén Mari, Stavros Akras, Denise R. Gonçalves
Nearly 30 years after the first detailed studies of low-ionization structures (LISs) in planetary nebulae (PNe), we perform a statistical analysis of their physical, chemical and e…
Low-ionization structures in planetary nebulae - I: physical, kinematic and excitation properties
Stavros Akras, Denise R. Gonçalves
Though the small-scale, low-ionization knots, filaments and jets (LISs) of planetary nebulae (PNe) are known for ~30yr, some of their observational properties are not well establis…