eps Aur - 7699A line status

[Robin Leadbeater]

The excess absorption at 7699A from neutral potassium has now reached the same level as when I first detected it above the noise on 24th May 2009 (0.03A EW) See attached for the evolution over the past 2 months. Eps Aur is better placed currently though and my equipment has improved over the past 3 years so it should be possible to track it a bit further before it finally disappears into the noise.

Cheers
Robin

eps Aur excess K absorption at 7699A Dec 2011 - Feb 2012

epsaur_ki_18-4feb-21-9jan12-16dec11_excess.png (6.7 KiB) Viewed 2965 times