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The Laboratory Basis of Astrophysics
The Stellar Temperature Scale
Pressures in Stellar Atmospheres
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absolute magnitude absorb absorption lines astrophysical atomic number azimuthal quantum Balmer lines Balmer series band calcium Chapter continuous background Contr cooler stars corresponding density derived discussed dwarf effective temperature elements emission lines energy estimates excitation potential Fe n Fo-Ma Fowler and Milne giant H. H. Plaskett helium Henry Draper Catalogue hotter stars hydrogen lines Ibid intensity ionization potential ionization theory ionized atoms laboratory marginal appearance maxima maximum Menzel multiplets neutral atoms number of atoms o.o o.o observed orbits Payne photosphere Phys physical present probably Proc quantum number R. H. Fowler radiation reversing layer Russell sequence series relations silicon solar spectrum spec spectral class spectroscopic stars of Class stellar atmosphere stellar spectra strontium subordinate lines surface gravity temperature scale theory of thermal thermal ionization tion titanium ultimate lines Unblended wave-length Wolf-Rayet stars