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HST/NICMOS Imaging Polarimetry of Proto-Planetary Nebulae: Probing of the Dust Shell Structure via Polarized Light
Toshiya Ueta, Koji Murakawa, Margaret Meixner
Using NICMOS on HST, we have performed imaging polarimetry of proto-planetary nebulae. Our objective is to study the structure of optically thin circumstellar shells of post-asympt…
The Molecular and Dust Envelope of HD 56126
M. Meixner, A. Zalucha, T. Ueta +2
We present millimeter interferometry images of the CO J=1-0 line emission arising in the circumstellar envelope of HD 56126 (a.k.a. IRAS 07134+1005), which is one of the best studi…
Unraveling the Helix Nebula: Its Structure and Knots
C. R. O'Dell, P. R. McCullough, M. Meixner
Through HST imaging of the inner part of the main-ring of the Helix Nebula together with CTIO 4-m images of the fainter outer parts, we have an unprecedented-quality view of the ne…