AZ Cas spectra at ingress
Posted: November 19, 2012 - 12:14pm
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
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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