Dear colleagues,
as you already know, several ARAS observers take part successful at the Halpha RV campaign, in order to determine the orbital eccentricity in the sense: zero or not zero (that's here the question).
At present we are on the ascending RV branch, and it would be great, if further observers could contribute with high-resolution spectra (for example LHIRES, 2400) to that campain.
Best wishes, Ernst Pollmann
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International Working Group ASPA
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische- ... troskopie/