29 citations · 37 across the 3 of their papers we have counts for
3 papers
Molecular chemistry and the missing mass problem in PNe
Rafael K. Kimura, Ruth Gruenwald, Isabel Aleman
Detections of molecular lines, mainly from H2$ and CO, reveal molecular material in planetary nebulae. Observations of a variety of molecules suggest that the molecular composition…
Modelling the Warm H2 Infrared Emission of the Helix Nebula Cometary Knots
Isabel Aleman, Albert A. Zijlstra, Mikako Matsuura +2
Molecular hydrogen emission is commonly observed in planetary nebulae. Images taken in infrared H2 emission lines show that at least part of the molecular emission is produced insi…
Modelling H2 Infrared Emission of the Helix Nebula Cometary Knots
Isabel Aleman, Albert A. Zijlstra, Mikako Matsuura +2
In the present work, we use a photoionisation code to study the H2 emission of the Helix nebula (NGC 7293) cometary knots, particularly that produced in the interface H+/H0 of the…