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The Physical Properties of Interstellar Dust | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 18, Issue 4, 2007, Pages 44-57 | ||
| Author | ||
| Ali. Abd Al-Satar Al-Athary Hussian Muhyi Ali Al-Musawi | ||
| Abstract | ||
| Composition, shape, size, nature and formation of the interstellar grains has posed a real dilemma for astronomers in particular and scientist in general. The nature of this grains still unknown precisely since the first recognition that grains exist some 70 years ago. Although many observational data have been obtained,especially during the 1960's and 1970's still there was little agreement among astronomers about the nature and composition of the interstellar grains. We have investigated the normalized extinction for four stars, using microbial grain model introduced by Fred Hoyle and Wickramasinghe.We have showed that data on normalized extinction of these region might be well explained by bacterial grain model . | ||
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