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Table 3

List of instruments used.

Star NACO VISIR Spitzer archive
13,27,54 mas 75 mas (IRAC 0.6, MIPS 1.2)

Pistol Star K-S13/S27, Lp-L27 PAH2*, SiC*, NeII* IRAC1, 2, 3, 4
WR102ka problem IRAC1, 2, 3, 4
WR102ka MIPS24
LBV1806-20 K-S27, Lp-L27 IRAC1, 2, 3, 4
LBV1806-20 MIPS24
HD 168625 3.74/4.05/Lp-L54 PAH1, PAH2 IRAC1, 2, 3, 4
HD 168625 K-S27, Lp-L27 SiC, NeII MIPS24
HD 168607 K-S27, Lp-L27 IRAC1, 2, 3, 4
HD 168607 MIPS24
MWC930 K-S27, Lp-L27*
MWC314 K-S27, Lp-L27 IRAC1, 2, 3, 4
HD 152234 PAH1, SiC, NeII
WR102e K-S13/S27, Lp-L27 IRAC1, 2, 3, 4
HD 164794 K-S27, Lp-L27 IRAC1, 2, 3, 4
HD 164794 MIPS24

Star WISE-archive HST-archive other
(1.38) 25,50,100 mas archive

Pistol Star 1,2,3*,4* yes 2MASS**
WR102ka 1,2,3,4 no SINFONI***
LBV1806-20 1, 2, 3, 4 yes N/A
HD 168625 1, 2, 3*, 4 yes N/A
HD 168607 1, 2, 3, 4 yes N/A
MWC930 1, 2, 3, 4 yes N/A
MWC314 1, 2, 3, 4 no swift*, EMMI*
HD 152234 1, 2, 3, 4 no N/A
WR102e 1, 2, 3*,4* yes N/A
HD 164794 1, 2, 3, 4 yes* VISIR*

Notes. The pixel size in angular units (mas or arcsec) of the cameras is indicated. The filters and NACO cameras (S13, S27, L27, L54) are mentioned. The central wavelength of each filter is provided in Table 4.

(*)

Too faint, saturated, not used (insufficient resolution or not deep enough).

(***)

SINFONI, scale 250 mas × 150 mas, data presented in Oskinova et al. (2013).

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