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M. Bobrowsky (Challenger Center for Space Science Education), B. Greeley (Orbital Sciences Corp.), M. Meixner (U. Illinois)
IRAS 17347--3139 was first identified as an IRAS source having infrared colors similar to those of planetary nebulae. Its infrared luminosity (5 \times 104 L\odot) and its low stellar temperature (1.5 \times 104 K) implies the presence of an object such as a proto-planetary nebula or a young planetary nebula. OH maser emission previously detected from this object at 1612 MHz showed two velocity components, possibly indicative of bipolar outflows. Radio imaging at 5 GHz indicated a diameter of 1.\prime\prime9, and a comparable size was seen in mid-infrared images (Meixner et al.\ 1999). Here we present an HST NICMOS image of IRAS 17437-3139 at 2.2\mu. It appears as an elliptical nebula with approximate dimensions 2\prime\prime x 4\prime\prime. The major axis is oriented approximately 40\circ west of north. The central star is not visible.
AFGL 4106 had been determined by Molster et al.\ (1999) to be a binary based on spectroscopic data. Here we present an HST NICMOS image at 1.6\mu that actually shows the two stars. They are separated by 0.\prime\prime26.
This work is based on observations made with the NASA/ESA Hubble Space Telescope and obtained at the Space Telescope Science Institute which is operated by the Association of Universities for Research in Astronomy, Inc., under contract NAS5-26555. Support for this work was provided by NASA through grant number GO-07898.01-96A from the Space Telescope Science Institute.