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main sequence |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.12 sec. |
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main sequence [′mān ′sē·kwəns] (astronomy) The band in the spectrum luminosity diagram which has the great majority of stars; their energy derives from core burning of hydrogen into helium. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Fifth, the main sequence cluster of the H3N2 subtype comprises 3 branches: 1) porcine H3N2 and porcine H1N2 sequences from the United States, 2) porcine H3N2 isolates from Hong Kong and human H1N2, and 3) recent human H3N2 and some Japanese H3N2 isolates. Here is the main sequence of content of the quarter-length course syllabus as I presented it in spring 1970. Long-term energy sources are indispensable because it takes billions of years for life to develop, and you must have what physicists call main sequence stars which are steadily-burning, long-lived stars. |
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