19 citations · 26 across the 8 of their papers we have counts for
8 papers
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…
FAST search for circumstellar atomic hydrogen. III. Planetary nebulae at Galactic latitudes |b|>10degree
Xu-Jia Ouyang, Yong Zhang, Albert Zijlstra +4
The detection of circumstellar atomic hydrogen (\ion{H}{1}) via the 21\,cm line remains a persistent challenge in planetary nebula (PN) studies, primarily due to contamination from…
Diverse Science from VLT imagery and spectroscopy of PNe in the Galactic Bulge
Quentin Parker, Shuyu Tan, Andreas Ritter +1
We have undertaken a deep investigation of a well defined sample of 136 PNe located in a 10x10 degree central region of the Galactic Bulge observed with the ESO VLT and supplemente…
Whither or wither the Sulfur Anomaly in Planetary Nebulae?
Shuyu Tan, Quentin Parker
We present a thorough investigation of the long standing sulfur anomaly enigma. Our analysis uses chemical abundances from the most extensive dataset available for 126 planetary ne…
Detailed studies of IPHAS sources -- III. The highly extinguished bipolar planetary nebula IPHASX J191104.8060845
J. B. Rodríguez-González, L. Sabin, J. A. Toalá +6
We present the first detailed study of the bipolar planetary nebula (PN) IPHASX J191104.8060845 (PN G040.601.5) discovered as part of the Isaac Newton Telescope Photometric H…
Planetary nebulae and how to find them: A concise review
Quentin A. Parker
This review provides useful background and information on how we find, vet and compile Planetary Nebulae (PNe) candidates and verify them. It presents a summary of the known Galact…
Discovery of new planetary nebulae in the Small Magellanic Cloud
Danica Drašković, Quentin A. Parker, Warren A. Reid +1
We present six new planetary nebulae (PNe) discovered in the Small Magellanic Cloud (SMC) from deep UK Schmidt telescope (UKST) narrow band Halpha and broad-band short-red "SR" con…
New Herbig-Haro Objects and Giant Outflows in Orion
S. L. Mader, W. J. Zealey, Q. A. Parker +1
We present the results of a photographic and CCD imaging survey for Herbig-Haro (HH) objects in the L1630 and L1641 giant molecular clouds in Orion. The new HH flows were initially…