AST201H1 Lecture Notes - Annie Jump Cannon, Main Sequence, Solar System

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Published on 20 Apr 2013
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AST201H()Stars)and)Galaxies))) )
Professor)Michael)Reid))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))Lecture)Notes))
February)12,)2013)
Lecture'10:'Properties'of'Stars'(continued)'
Spectral'Types'
Edward)Pickering)–)categorize)all)the)stellar)spectra,)but)did)not)know)why)
every)category)is)different)from)one)another'
Annie'Jump'Cannon'realized)that)Spectra)A,)B,)F,)G,)K,)M,)O)are)the)ones)that)
are)important)and)form)a)pattern)in)the)order)of)OBAFGKM'
o However,)there)is)more)than)just)OBAFGKM)–)giving)a)scale)of)0(9)to)
further)distinguish)every)spectral)types'
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