CST stars

Affiliation
American Association of Variable Star Observers (AAVSO)
Thu, 05/14/2015 - 23:36

Is it of any value to observe CST stars, or once they have been designated as such there is no need anymore?

Affiliation
American Association of Variable Star Observers (AAVSO)
CST stars

 

 

The short answer is "No!" - it is not valuable to sepnd your effort monitoring tnem. The longer answer is that there are numerous photometric surveys that record such stars as "by-catch", so they won't actually be lost if they aren't truly constant - but the likelihood - very high, normally - is that they are actually constant and were mis-classified for some obscure historical reason.

Cheers,

Doug

Affiliation
American Association of Variable Star Observers (AAVSO)
Good to know

Ok, Thanks!  The reason this came up is I was perusing the Sky Atlas 2000 and noticed quite a few "variables" plotted besides the ones I am familiar with.  Upon looking them up, a significant number of them were CST.  I even looked at some light curves, but just saw random scatter.

Affiliation
American Association of Variable Star Observers (AAVSO)
CST

"constant":

CST

Non-variable stars (constant), formerly suspected to be variable and hastily designated. Further observations have not confirmed their variability.

Affiliation
American Association of Variable Star Observers (AAVSO)
v1081 tauri

oh good to read your posts as i was planing to observe this star but then this is a constant so no need really. thanks