Sat, 07/27/2013 - 13:42
An observation report of the current state of the circumstellar disk of delta Sco.
http://www.astrospectroscopy.de/State_of_delSco_disk.pdf
Ernst Pollmann
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Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de
http://www.astronomie.de/astronomische-fachgebiete