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SUMMARY:Milne and the Dawn of the Theory of Stellar Structure - Professor 
 Chris Tout
DTSTART:20190223T105000Z
DTEND:20190223T113500Z
UID:TALK119389@talks.cam.ac.uk
CONTACT:73969
DESCRIPTION:Between 1921 and 1937 Edward Arthur Milne published around 90 
 papers on stars.  This was a period of very rapid change in our understand
 ing of these fascinating objects that make up the visible Universe and Mil
 ne was a key player in these changes.\nIn 1925 Cecilia Payne found the fir
 st indications that hydrogen is the major constituent of the Sun.  Though 
 Eddington was already convinced that nuclear fusion is the source of a sta
 r's luminosity it was not until 1928 that Gamow applied quantum mechanical
  tunnelling to alpha particle emission and it became feasible that fusion 
 could operate at the temperatures expected at the centres of stars.  Milne
 's early contributions concerned stellar atmospheres\, including the forma
 tion of spectral lines and limb darkening.  Later he delved into many aspe
 cts of stellar structure\, including rotating stars\, pulsating \nstars\, 
 binary stars and collapsed degenerate stars.  It was Milne's \nwork on col
 lapsed stars that caught the attention of Chandrasekhar and led him to det
 ermine the maximum mass for a white dwarf in 1931.  I shall endeavour to p
 ortray these exciting times and how the ideas have developed into our pres
 ent-day theory of stellar structure and \nevolution. 
LOCATION:Winstanley Lecture Theatre\, Trinity College
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