Ellipse parameters for feature A1 in Fig. 2c.
|A1||Semi-major axis (′′)||1.66||2.35|
|(no fit)||Semi-minor axis (′′)||1.14||1.61|
|RA offset ux (′′)||0.16||−0.23|
|Dec offset uy (′′)||0.11||−0.16|
|Offset angle (°)||56||236|
|Hτ = 1 (au)||49.2||70.7|
|Hτ = 1/r||0.16||0.16|
Notes. In Fig. 5, the red ellipse shows the scenario where A1 is the bottom side of R1; the purple ellipse shows A1 as a separate outermost ellipse.
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