Castor (star) in their spectra, and all are flare stars. "α Geminorum" (Latinised to "Alpha Geminorum") is the star system's Bayer designation. Castor and Pollux are the two "heavenly twin" stars that give the constellation Gemini (meaning "twins" in Latin) its name. The name "Castor" refers specifically to Castor, one of the twin sons of Zeus and Leda in Greek and Roman mythology. The star was annotated by the Arabic description "Al-Ras al-Taum al-Muqadim", which translates as "the head of the foremost twin." In the catalogue of stars in the "Calendarium of Al Achsasi Al Mouakket", this star was designated "Aoul al
Leda and the Swan (Correggio) and extraordinary balance between naturalist rendering and poetic transfiguration. Correggio had made a study of Michelangelo's "Leda and the Swan". According to Vasari's "Lives of the Artists", the "Leda" and a "Venus" (i.e. "Danaë") were commissioned by Federico II Gonzaga, Duke of Mantua as a gift for Charles V, Holy Roman Emperor. This is supported by the theory that Jupiter was flying out of the right hand side of "Leda" in swan form and into the left hand side of "Danaë" in golden-shower form. However, one more recent study suggests that all the paintings in the "amori di Giove" series