I review the influence jets and the bubbles they inflate might have on their ambient gas as
they operate through a negative jet feedback mechanism (JFM). I discuss astrophysical …

Binarity has been hypothesised to play an important, if not ubiquitous, role in the formation of
planetary nebulae (PNe). Yet there remains a severe paucity of known binary central stars …

The total number of true, likely and possible planetary nebulae (PN) now known in the Milky
Way is nearly 3000, double the number known a decade ago. The new discoveries are a …

Considerable effort has been applied towards understanding the precise sha**
mechanisms responsible for the diverse range of morphologies exhibited by planetary …

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 …

The iconic planetary nebula (PN) NGC 7027 is bright, nearby (D∼ 1 kpc), highly ionized,
intricately structured, and well observed. This nebula is hence an ideal case study for …

Nearly 30 yr after the first detailed studies of low-ionization structures (LISs) in planetary
nebulae (PNe), we perform a statistical analysis of their physical, chemical, and excitation …

Though the low-ionization small-scale structures (LISs) such as knots, filaments and jets of
planetary nebulae (PNe) are known for∼ 30 yr, some of their observational properties are …

We report on the discovery of ETHOS 1 (PN G068. 1+ 11.0), the first spectroscopically
confirmed planetary nebula (PN) from a survey of the SuperCOSMOS Science Archive for …

Context. Analysis of published [O iii] and [S iii] temperatures measurements of emission line
objects consisting of Hii galaxies, giant extragalactic Hii regions, Galactic Hii regions, and …