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[vsnet-chat 6288] (fwd) re coloUr conversions




   The following message is from John Greaves:

well, some of these buggers in this compilation are synthetic, some 
real, and you'll have to do some adding up (subtracting actually) to 
get J-K from the given V-J and V-K, but all the stuff you asked for 
(spectral types, B-V and J-K [remembering J-K ain't quite J-Ks] plus 
some extras) is here:-

http://webast.ast.obs-mip.fr/stelib/literature/Pickles_tbl2.txt

if you go up the tree an url or two you should also find a link to 
Pickles' postscripted preprint on the matter, which may well explain 
what this colour work he did is all about / where it came from.

http://webast.ast.obs-mip.fr/stelib/literature/Pickles_1998.ps

Cheers

John

NB : as I often tell folk, 'short period' low amplitude asas 
variables can be apocryphal (or sometimes low ampl. irregular lpvs).  
There's an old post on vsnet-survey about that somewhere, and the 
problem still persists in asas3 at times.  Fully automated 
fouriergram analysis is the reason, although care for when the main 
periodicity (properly frequency) peaks are low amplitude could be 
shoved into the algorithms.


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