"me" wrote in message
. uk...
Hi

Sirius B, a white dwarf, has a surface temperature of around 25,000
degrees
C. Sirius A, a blue/white main sequence star has a surface temperature
of
around 12,000 degrees C. Usually the bluer a star is, the hotter it
is. Just
wondered why it's not the case here.


Why do you say Sirius B is less blue than Sirius A?