Mu_Crucis

Mu Crucis

Mu Crucis

Star in the constellation Crux

Mu Crucis, Latinized from μ Crucis, is the seventh-brightest star in the constellation Crux commonly known as the Southern Cross. μ Crucis is a wide double star of spectral class B stars, magnitude 4.0 and 5.2 respectively. They lie about 370 light-years away, and both stars are likely physically attached. The brighter component is known as μ1 Crucis or μ Crucis A, while the fainter is μ2 Crucis or μ Crucis B.

Quick Facts Observation data Epoch J2000 Equinox, Apparent magnitude (V) ...

μ1 Crucis is the brighter of the two stars with an apparent magnitude of 4.0. It is a hot massive main sequence or subgiant star, over a thousand times as luminous as the sun.

μ2 Crucis is the fainter of the pair. Its apparent magnitude is 5.2 and it is a Be star, a star spinning so quickly that it has ejected a disc of material that creates emission lines in its spectrum. The disc is inclined at 36° to our line of sight.[11]

References

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    Zorec, J.; Arias, M. L.; Cidale, L.; Ringuelet, A. E. (2007). "Be star disc characteristics near the central object". Astronomy & Astrophysics. 470 (1): 239–247. Bibcode:2007A&A...470..239Z. doi:10.1051/0004-6361:20066615. hdl:11336/38181.
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