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AZ Cas spectra at ingress

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Robin Leadbeater
AZ Cas spectra at ingress

Spectra of AZ Cas taken in the blue are showing dramatic changes associated with impending ingress. (see attached raw spectra)  Absorption lines from the outer atmosphere of the M star have appeared superimposed on the M star spectrum.

Robin

www.threehillsobservatory.co.uk

Robin Leadbeater
AZ Cas spectra at ingress

That should read of course

..... superimposed on the B star spectrum

 

(Why is there  facilty for editing posts on this forum and why do I have to re-enter the thread title??)

 

Robin 

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