Colloquium on 7 May 2015
Proxima Centauri – 100 years since its discovery


Title: Proxima Centauri – 100 years since its discovery
Speaker: Ian Glass
Date: Thursday, 7 May 2015
Time: 11:00 - 12:00
Venue: SAAO Auditorium


Proxima Cen, the current nearest star, was discovered as a high proper motion object 100 years ago by Robert Innes, working from the then Union Observatory in Johannesburg. In 1917 he announced that it is the nearest star and gave it its name. The first star to have its distance measured was the double, Alpha Cen. This was done by Thomas Henderson from the Royal Observatory in Cape Town. My talk will describe the circumstances leading up to the two events and some of the science about these stars, the nearest of their types and thus prime candidates for planet searches and other investigations.

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