37 citations · 68 across the 5 of their papers we have counts for
6 papers
Symmetry and Asymmetry in "born again" Planetary Nebulae
S. Kimeswenger, A. A. Zijlstra, P. A. M. van Hoof +4
While in the past spheroidicity was assumed, and still is used in modeling of most nebulae, we know now that only a small number of planetary nebulae (PNe) are really spherical or…
Kinematics and H_2 morphology of the multipolar Post-AGB star IRAS 16594-4656
G. C. Van de Steene, T. Ueta, P. A. M. van Hoof +2
context: The spectrum of IRAS 16594-4656 shows shock excited H_2 emission and collisionally excited emission lines such as[O I],[C I],and [Fe II]. aim: The goal is to determine the…
The onset of photoionization in Sakurai's Object (V4334 Sgr)
P. A. M. van Hoof, M. Hajduk, Albert A. Zijlstra +6
We investigate the reheating of the very late thermal pulse (VLTP) object V4334 Sgr (Sakurai's Object) using radio observations from the Very Large Array, and optical spectra obtai…
IRAS08281-4850 and IRAS14325-6428: two A-type post-AGB stars with s-process enrichment
M. Reyniers, G. C. Van de Steene, P. A. M. van Hoof +1
One of the puzzling findings in the study of the chemical evolution of (post-)AGB stars is why very similar stars (in terms of metallicity, spectral type, infrared properties, etc.…
The Real-Time Evolution of Sakurai's Star (V4334 Sgr) and other (V)LTP Objects
P. A. M. van Hoof, M. Bryce, A. Evans +10
We report on the progress of our on-going campaign to monitor the evolution of the VLTP objects V4334 Sgr and V605 Aql, as well as the suspected (V)LTP object CK Vul. V4334 Sgr doe…
Shock emission in the bipolar post-AGB star IRAS 16594-4656
G. C. Van de Steene, P. A. M. van Hoof
In this paper we study the near-infrared emission spectrum of IRAS 16594-4656, a bipolar post-AGB star with spectral type B7 and no observed ionization. Using optical and near-infr…