dy persei variableの例文

例文

1. DY Persei variables are a subclass of R CrB variables that have a periodic variability in addition to their eruptions.
2. Although DY Persei variables have been considered a subset of the R CrB variables because of their irregular fades and carbon-rich spectra, they may simply be an unusual type of Carbon star unrelated to the more massive and more luminous R CrB variables.