All pulsating Algols detected and analysed thus far lie inside the classical 5 Scuti star instability strip
very close to the ZAMS (Mkrichian et al.
The instability strip
, which goes through Xinjiang, Afghanistan, Pakistan, and may immediately affect the Ferghana Valley, Kadyr Malikov, Director of Analytical and Research Center, told reporters today.
A sampling of topics: stellar evolution models of rotation in white dwarfs, central stars of planetary nebulae, a new look at the empirical initial-final mass relation, white dwarfs in the Capodimonte Deep Field, broad-band molecular polarization in white dwarfs, self-consistent diffusion in low mass hot stars, Spitzer observations of GD 362 and other metal-rich white dwarfs, the progenitors of type Ia supernovae, and testing the purity of the ZZ Ceti instability strip
The latter are main-sequence stars that are expected to pulsate because they lie in the so-called instability strip
on the Hertzsprung- Russell diagram.
All stars that begin life with about 5 to 20 solar masses eventually pass through the instability strip
, some more than once.