144 citations · 901 across the 34 of their papers we have counts for
35 papers
Proto-Planetary Nebulae Are Not the Precursors of Planetary Nebulae With Close Binary Central Stars
Todd C. Hillwig, Bruce J. Hrivnak, David Jones
Proto-planetary nebulae are considered to be the evolutionary link between AGB stars and planetary nebulae. They possess many of the physical characteristics expected of such a lin…
Current Unsolved Problems in Planetary Nebulae Research
Sun Kwok, Bruce Balick, You-Hua Chu +5
While there has been significant progress in our understanding of the origin and evolu-tion of planetary nebulae in the last 50 years, there remain several unsolved problems. These…
Variability in Protoplanetary Nebulae: X. Multi-year Periods as an Indicator of Potential Binaries
Bruce J. Hrivnak, Wenxian Lu, Gary Henson +1
New observations are presented of four evolved objects that display long, multi-year variations in their light curves. These are interpreted as good evidence of their binary nature…
Variability in Protoplanetary Nebulae: IX. Evidence for Evolution in a Decade
Bruce J. Hrivnak, Wenxian Lu, William C. Bakke +1
We have carried out a new photometric V,Rc study of 12 protoplanetary nebulae, objects in the short-lived transition between the AGB and PN phases of stellar evolution. These had b…
Luminosities and masses of single Galactic Post-Asymptotic Giant Branch (Post-AGB) stars with distances from EDR3: The revelation of an -process diversity
Devika Kamath, Hans Van Winckel, Paolo Ventura +4
Post-AGB stars are exquisite probes of AGB nucleosynthesis. However, the previous lack of accurate distances jeopardised comparison with theoretical AGB models. The Early Da…
Variability in Proto-Planetary Nebulae: VIII. A New Sample of Southern Hemisphere Objects
Bruce J. Hrivnak, Gary Henson, Todd C. Hillwig +5
As part of our continuing study of light variability in proto-planetary nebulae (PPNe), we present the results from a long-term study of nine southern hemisphere objects. We have m…