Alnitak colour

Forums General Discussion Alnitak colour

Viewing 1 post (of 1 total)
  • Author
  • #575181
    Arthur Fentaman

    When observing Alnitak zeta Orionis recently, I noticed that one side of it appears creamy yellow and the other side blue.

    Increasing magnification split the stars into a double consisting of a blue white with a yellow companion.

    The main star is listed as a class O with the companion being a B2 III. Neither of these stars are yellow so what is giving the yellow appearance? 

    Unfortunately I am unable to image this but wondered if someone could explain what I am seeing.

Viewing 1 post (of 1 total)
  • You must be logged in to reply to this topic.