The GRAVITY young stellar object survey - VI. Mapping the variable inner disk of HD 163296 at sub-au scales

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Table A.1

HD 163296 observational log

GRAVITY observations³
Date (dd/mm/yyyy)	Array	No. of snapshots	Average seeing¹	Max. resolution²	Min. resolution
07-07-2018	D0-G2-J3-K0	12	0.63±0.13	2.25 mas	6.50 mas
14-07-2019	D0-G2-J3-K0	7	1.22±0.05	2.42 mas	6.58 mas

PIONIER observations
Date (dd/mm/yyyy)	Array	No. of snapshots	Average seeing	Max. resolution	Min. resolution

14-06-2013	D0-G1-H0-I1	1	0.96	2.38 mas	4.78 mas
02-07-2013	A1-B2-C1-D0	3	1.07 ± 0.24	4.91 mas	16.01 mas
22-04-2017	D0-G2-J3-K0	4	0.44±0.04	1.63 mas	4.28 mas
29-08-2017	A0-G1-J2-J3	4	0.70±0.25	1.28 mas	3.58 mas
30-08-2017	A0-G1-J2-J3	1	0.63	1.28 mas	3.17 mas

¹ Average seeing and its standard deviation computed over the total number of snapshots per configuration and day.

² Resolution is defined as θ = λ / (2B_max). For the values reported, weused λ₀ = 2.2 μm and λ₀ = 1.65 μm as central wavelengths for GRAVITY and PIONIER, respectively.

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