Delta Crucis - Properties

Properties

This star has a stellar classification of B2 IV, making it a subgiant star that is in the process of evolving away from the main sequence stage. It is now developing into a red giant and will one day end as a white dwarf. Presently it is radiating around 10,000 times the luminosity of the Sun from its outer atmosphere at an effective temperature of 22,570 K, causing it to glow with a blue-white hue. Delta Crucis is a strong candidate Beta Cephei variable and changes its brightness subtly with a period of 1.3 hours. Its rotation is very fast, with a projected rotational velocity of 210 km s–1.

Delta Crucis is a member of the Lower Centaurus Crux (LCC) component of the Scorpius-Centaurus Association, which is an OB association of massive stars that share a common origin and motion through space. This is the nearest OB association to the Sun, with the LCC component having an age in the range of 16–20 million years.

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