Hypersonic bipolar outflows are a ubiquitous phenomena associated with both young and
highly evolved stars. Observations of Planetary Nebulae, the nebulae surrounding …

Giant Herbig-Haro Flows ADS Classic is now deprecated. It will be completely retired in October
2019. This page will automatically redirect to the new ADS interface at that point. SAO/NASA …

ABSTRACT I classify a large number of planetary nebulae (458) according to the process
that caused their progenitors to blow axisymmetrical winds. The classification is based …

It has recently been noted that there seems to be a strong correlation between planetary
nebulae with close binary central stars and highly enhanced recombination line …

Stars are generally spherical, yet their gaseous envelopes often appear nonspherical when
ejected near the end of their lives. This quirk is most notable during the planetary nebula …

Around 50 planetary nebulae (PNs) are presently known to possess" small-scale" low-
ionization structures (LISs) located inside or outside their main nebular bodies. We consider …

The common envelope (CE) interaction describes the swallowing of a nearby companion by
a growing, evolving star. CEs that take place during the asymptotic giant branch phase of the …

We study the evolution of dense neutral clumps located in the outer parts of planetary
nebulae. These clumps will be photo-ionized by the ionizing radiation from the central star …

Aims. Two-dimensional spectroscopic data for the whole extent of the NGC 3132 planetary
nebula have been obtained. We deliver a reduced data-cube and high-quality maps on a …

Jets (fast collimated outflows) are claimed to be the main shaping agent of the most
asymmetric planetary nebulae (PNs), as they impinge on the circumstellar material at late …