It is now clear that central star binarity plays a key role in the formation and evolution of planetary nebulae, with a significant fraction playing host to...
The binary central stars of PNe with the shortest orbital period
Close binarity can play a significant role in the shaping of planetary nebulae (PNe) as the system evolves through the common-envelope phase. We present the...
The authors discuss the nature of S 201 in the light of new optical and infrared observations, in terms of the interaction between an evolved H II region and a...
HR 3126 is an M2 II giant surrounded by the bipolar reflection nebula IC2220. A sensitive R-band image obtained with the ESO 3.6 m telescope shows that the...
High-dispersion long-slit spectra reveal several kinematically distinct components to the extended emission line gas in NGC 3516. The symmetry of the velocity...