Long-period variable star

A long-period variable (LPV) star is a type of pulsating cool giant variable star with periods from a few days to a thousand or more, sometimes poorly defined, and sometimes irregular. Long-period variables have spectral class F and redwards, but most are red giants and AGB giants, meaning spectral class M, S or C. They are usually deep orange or red.

单词	Long period variable star
释义	Long period variable star 英语百科 Long-period variable star A long-period variable (LPV) star is a type of pulsating cool giant variable star with periods from a few days to a thousand or more, sometimes poorly defined, and sometimes irregular. Long-period variables have spectral class F and redwards, but most are red giants and AGB giants, meaning spectral class M, S or C. They are usually deep orange or red.
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Long period variable star

Long-period variable star