Octans was one of the southern constellations created by 18th-century French astronomer Nicolas-Louis de Lacaille. He used them to fill the gaps in the southern sky map, naming them for tools of the arts and sciences of his day. An octant was a navigation device that preceded the sextant.
If astronomers talk about the death of stars, it's probably not pop stars they mean. Unless the pop star created Ziggy Stardust, Major Tom and Aladdin Sane, and sang "Life on Mars", "Starman" and "Hallo Spaceboy". Here are some of the astronomy tributes to David Bowie.