Carina is a constellation in the southern sky.
Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star.
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
V520 Carinae (V520 Car / w Car / w Carinae) is a star in the constellation of Carina.
Vela is a constellation in the southern sky.