Proceedings of the International Astronomical Union


The A-Star Puzzle
Contributed Papers

The physical properties of normal A stars


Saul J. Adelman a1
a1 Department of Physics, The Citadel, 171 Moultrie Street, Charleston, SC 29409, USA email: adelmans@citadel.edu

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Abstract

Designating a star as of A-type is a result of spectral classification. After separating the peculiar stars from those deemed to be normal using the results of a century of stellar astrophysical wisdom, I define the physical properties of the “normal” stars. The hotter A stars have atmospheres almost in radiative equilibrium. In the A stars convective motions can be found which increase in strength as the temperature decreases.


Key Words: Stars: abundances; stars: fundamental parameters; stars: rotation; convection; diffusion; magnetic fields.


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