Red supergiants as progenitors of core-collapse supernovae

红超巨星是被证实的核崩塌超新星II-P型的前身。然而，目前还不太清楚哪些红超巨星会产生SN II-P，哪些会产生另一种类型的SN或非SN崩塌，以及哪些会在崩塌前转变为更热的天体。这个问题在很大程度上取决于红超巨星阶段质量损失的强度。这种质量损失，包括粉尘的产生，也决定了任何SN爆炸的环境条件。这个项目试图对附近星系中的红超巨星进行普查，测量它们的光度、半径和质量损失率，并将这些性质与同一系统中的SNE、SN前体和其他恒星种群(包括较少和较多进化的)的这些性质联系起来。

Red supergiants are confirmed progenitors of core-collapse supernovae of type II-P. However, it is not very well known which red supergiants produce a SN II-P, which ones might produce another type of SN or SN-less collapse, and which ones will transform into a hotter object before collapse. Much of this question relies on the strength of the mass loss during the red supergiant phase. This mass loss, including dust production, also sets the environmental conditions within which any SN explodes. This project seeks to make a census of red supergiants in nearby galaxies, measure their luminosities, radii and mass-loss rates, and relate these properties to those of SNe, SN progenitors, and other stellar populations (both less and more evolved) in the same systems.