Preplanetary disk?
نویسندگان
چکیده
منابع مشابه
A Starfish Preplanetary Nebula: Iras 19024+0044
Using the Hubble Space Telescope, we have imaged the OH/IR star IRAS 19024+0044 ( I19024) at 0.6, 0.8, 1.1, and 1.6 m, as part of our surveys of candidate preplanetary nebulae. The images show a multipolar nebula of size 3B7 ;2B3, with at least six elongated lobes emanating from the center of the nebula. Two of the lobes show limb-brightened tips having point-symmetric structure with respect to...
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Using the Hubble Space Telescope (HST), we have carried out a survey of candidate preplanetary nebulae (PPNs). We report here our discoveries of objects having well-resolved geometrical structures, and use the large sample of PPNs now imaged with HST (including previously studied objects in this class) to devise a comprehensive morphological classification system for this category of objects. T...
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ژورنال
عنوان ژورنال: Nature
سال: 1978
ISSN: 0028-0836,1476-4687
DOI: 10.1038/271503b0