Properties and Stability of Hybrid Stars
  We discuss the properties of neutron stars and their modifications due to the occurrence of hyperons and quarks in the core of the star. More specifically, we consider the general problem of exotic particles inside compact stars in light of the observed two-solar mass pulsar. In addition, we investigate neutron star cooling and a possible explanation of the recently measured cooling curve of the neutron star in the supernova remnant Cas A. 
S. Schramm, R. Negreiros, J. Steinheimer, T. Sch\"urhoff, V. Dexheimer
astro-ph.SR nucl-th