Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Longest period variable star?

  1. Apr 17, 2014 #1
    Hi, what is the name of the variable star with the longest period? I know Mira variables are in general the longest, but which particular star has the longest period? Thanks.
  2. jcsd
  3. Apr 17, 2014 #2
    Off the top of my head, I will guess Epsilon Aurigae. It's not a Mira, though.
  4. Apr 17, 2014 #3
    Ah, sorry I meant longest period pulsating variable. One book I have gives 700 days as the upper limit for Miras, another 1000 days.
  5. Apr 24, 2014 #4
    Still looking for this information...failed to find on AAVSO site.
  6. Apr 24, 2014 #5


    User Avatar
    Science Advisor

  7. Apr 24, 2014 #6
    Thank you sir, quite interesting. I suppose very long period variables are somewhat of a practical problem, even more so if in the infrared range.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook