Physics
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.3468s&link_type=abstract
HST Proposal ID #3468
Physics
Hst Proposal Id #3468
Scientific paper
HD 44179, the central star of the Red Rectangle Nebula, may be a natural molecular factory. It is unique in exhibiting molecular emission bands in the ultraviolet that are as strong as the continuum, even at low spectral resolution. It is important to understand where these molecules are formed, whether they are free or adsorbed onto grain surfaces, and how the molecular emission region is related to the dusty region as a whole (geometrically). Furthermore, a proper identification of the molecular species and their physical state will make it possible to understand part of the nature of molecular formation in stars and the ejection of this material into the interstellar medium. The goals of this project are to understand the chemical and physical nature of the material giving rise to the UV bands, using high resolution spectroscopy and low resolution spectropolarimetry. The Phase I proposal was for 12.08 hours of exposure time, and 18.05 hours of spacecraft time. Phase I approval was for 18.04 hours of spacecraft time. For Phase II submission, the RPSS Source Estimator gives 11.984 hours of exposure and 18.01 hours of spacecraft time (using the revised ACQ times of 10 March 1992). At the recommendation of the Phase I review committee, the budget has been revised.
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