Image Details
Caption: Figure 4.
HIRES spectrum taken on 2005 December 21, by George Herbig showing the Hα emission-line profile of G2 overlaid a very broad absorption line with a width of ∼1200 km s−1. The central absorption is likely formed by the superposition of two blue- and redshifted emission peaks that vary in antiphase, causing the central dip to move back and forth (see Section 5.1).
© 2026. The Author(s). Published by the American Astronomical Society.