Luminous blue variables: An imaging perspective on their binarity and near environment

Christophe Martayan; Alex Lobel; Dietrich Baade; Andrea Mehner; Thomas Rivinius; Henri M. J. Boffin; Julien Girard; Dimitri Mawet; Guillaume Montagnier; Ronny Blomme; Pierre Kervella; Hugues Sana; Stanislav Štefl; Juan Zorec; Sylvestre Lacour; Jean-Baptiste Le Bouquin; Fabrice Martins; Antoine Mérand; Fabien Patru; Fernando Selman; Yves Frémat

doi:10.1051/0004-6361/201526578

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Volume 587 (March 2016)

A&A, 587 (2016) A115

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Table 2

Summary of the NACO and VISIR observations.

Date	Instrument	Mode	Length	Seeing	Transparency

17/06 + 01/08/2010	NACO	SM	4 × 1 h	0.8″	clear
17−18/07/2011	NACO	VM	1 n	0.65″–0.8″	clear
18−19/07/2011^a	NACO	VM	0.5 n	0.55″–0.65″	clear-thin
20/07/2011^b	VISIR	VM	0.5 n	1.0″–1.5″	thin-thick

Notes. The service mode (SM) or visitor mode (VM) is indicated in Col. 3. The length of the observations is given in hours or in nights in Col. 4. Columns 5 and 6 provide the weather condition: R-band image quality and sky transparency.

^(a)

a NACO technical problem prevented observation of the star WR102ka.

^(b)

a significant fraction of the planned observations were not performed owing to the weather.

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