76 citations · 354 across the 23 of their papers we have counts for
6 papers · 1 filter
HST Snapshot Survey of Post-AGB Objects
N. Siodmiak, M. Meixner, T. Ueta +3
The results from a Hubble Space Telescope (HST) snapshot survey of post-AGB objects are shown. The aim of the survey is to complement existing HST images of PPN and to connect vari…
Radio Observations of New Galactic Bulge Planetary Nebulae
Griet C. Van de Steene, George H. Jacoby
We observed 64 newly identified galactic bulge planetary nebulae in the radio continuum at 3 and 6 cm with the Australia Telescope Compact Array. We present their radio images, pos…
Properties of post-AGB stars with IRAS colors typical of planetary nebulae
Griet C. Van de Steene, Peter A. M. van Hoof, Peter R. Wood
We have investigated the infrared properties of a sample of objects with IRAS colors typical of planetary nebulae. The selected objects have not yet evolved to the planetary nebula…
Properties of Dust Grains in Planetary Nebulae -- I. The Ionized Region of NGC 6445
P. A. M. van Hoof, G. C. Van de Steene, D. A. Beintema +3
In this paper we study new infrared spectra of the evolved planetary nebula NGC 6445 obtained with ISO. These data show that the thermal emission from the grains is very cool and h…
Photo-ionization modelling of planetary nebulae -- II. Galactic bulge nebulae, a comparison with literature results
P. A. M. van Hoof, G. C. Van de Steene
We have constructed photo-ionization models of five galactic bulge planetary nebulae using our automatic method which enables a fully self-consistent determination of the physical…
HE 3-1475 AND ITS JETS
M. Bobrowsky, A. A. Zijlstra, E. K. Grebel +5
We present spectra and high-resolution images taken with HST, the NTT, the VLA, and the MPIA/ESO 2.2m of the emission-line star He 3-1475 which we suggest is a post-AGB star. The s…