Acrux

Acrux is the brightest star in the southern cross (Bottom)
earthsky.org

Star: Acrux (Alpha Crucis)
Chemical Makeup: Hydrogen and Helium
Location: 
            Right Ascension: 12h 26m 35.89522s
            Declination: −63°
Spectrum Analysis of Most Abundant Chemical: 

http://www.umop.net/spctelem.htm

Stellar Classification: B0.5 IV
References:

http://earthsky.org/brightest-stars/acrux-shines-in-the-southern-cross
https://en.wikipedia.org/wiki/Alpha_Crucis