The asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex?

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Table 1

Overview of VLTI/MATISSE observations of HD 163296.

Target							Calibrator

Date and time (UTC)	Seeing	τ₀	Stations	Array	ϑ_max (mas)		Name	LDD	Bands	Time (UTC)

	(″)	(ms)			L	N		(mas)
2019-03-23 08:41	0.45	9.7	A0-B2-D0-C1	Small	11	33	δ Sgr	5.86	LN	08:53
2019-05-06 08:19	0.7	4.6	K0-G1-D0-J3	Large	3	8	HD 156637	2.16	L	08:07
							δ Sgr	5.86	N	08:38
2019-06-26 06:26	2.5	0.9	A0-B2-D0-C1	Small	11	34	HD 165135	3.46	LN	07:25
2019-06-29 07:07	0.9	2.4	A0-B2-D0-C1	Small	11	35	HD 165135	3.46	LN	07:38

Notes. τ₀ is the atmospheric coherence time. LDD is the estimated angular diameter of the calibrator. ϑ_max is the resolution corresponding to the longest baseline in the array. Bands indicate the band(s) that the calibrator was used for.

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