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astro-ph2004
24 micron Properties of X-ray Selected AGN
J. R. Rigby, G. H. Rieke, R. Maiolino +13
We examine the 24 micron to X-ray color of 157 X-ray--selected AGN as a function of X-ray obscuration and optical classification in the Chandra Deep Field South. The sample consist…
astro-ph2000
HST NICMOS Observation of Proto-Planetary Nebulae
K. Y. L. Su, S. Kwok, B. J. Hrivnak +1
We report NICMOS wide-band and polarimetric observations of four proto-planetary nebulae. Molecular hydrogen emission is detected near the ends of the bipolar lobes of IRAS 17150-3…
astro-ph2000
2-D Radiation Transfer Model of Non-Spherically Symmetric Dust Shell in P roto-Planetary Nebulae
K. Y. L. Su, K. Volk, S. Kwok
We have fitted the HST images and the spectral energy distributions (SEDs) of three proto-planetary nebulae (PPN) with a 2-D radiation transfer model. The geometric and mass loss p…