How hot is the hottest star Astronomy?

Thursday, March 12th, 2009 at 9:31 pm

Susan ASked:

I know it is something to the effect of the central star equaling 200000k but what is it in.The hottest star astronomy so far found is NGC 2440: However this is a stellar remnant, a white dwarf in particular.

Reply:

I've read an O3 dwarf before having a surface temperature of 80,000K but I cannot remember what's the name since it's in number form. Wolf-Rayet's have temperatures that soar to prescription drugs without above 100,000K,too.