Extended Data Fig. 9: Observations and models of blue and red CO emission towards W Aql.
From: Chemical tracers of a highly eccentric AGB–main-sequence star binary
The plots show that blue (a and c) and red (b and d) channels equidistant from the stellar LSR velocity (υLSR = − 23km s−1) in velocity space do not exhibit identical CO emission patterns. The ALMA observations (a and b) show an elongated emission region on the blue side (a) and an approximately round emission region on the red side (b). The same pattern is mimicked in the red (c) and blue (d) channels of the hydrodynamic model processed with MCFOST. The red and black crosses correspond to the locations of the AGB and F9 stars. Note that the modelled and observed positions do not exactly correspond. Details are given in ‘Hydrodynamic simulations’ in the Methods.
