Does Sirius have layers

Yes, Sirius, like many stars, has distinct layers. It is a binary star system consisting of Sirius A, a main-sequence star, and Sirius B, a white dwarf. Sirius A has an outer layer of hydrogen and helium, followed by a core where nuclear fusion occurs. Sirius B, having evolved from a red giant, has a layered structure as well, with a carbon-oxygen core surrounded by a thin outer shell.