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astro-ph2000
The Circumstellar Matter Around OH44.8-2.3
M. Bobrowsky, B. W. Greeley, T. Ueta +1
I-band images of the OH maser source OH44.8-2.3 are presented. Having a well-determined distance, this object is shown to be very young and physically small, with an asymmetric com…
astro-ph1999
Dual Axisymmetry in Proto-Planetary Nebula Reflection Nebulosities: Results from an HST Snapshot Survey of PPN Candidates
Toshiya Ueta, Margaret Meixner, Matthew Bobrowsky
We summarize results of our {\it HST} imaging survey of proto-planetary nebula (PPN) candidates, in which we discovered two types of axisymmetric reflection nebulosities. The Star-…