Spatially resolving the outer atmosphere of the M giant BK Virginis in the CO first overtone lines with VLTI/AMBER

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Table 1

Summary of the AMBER observations of BK Vir with the E0-G0-H0 AT configuration.

#	Night	t_obs	B_p	PA	Seeing	Airmass	DIT	Number	Calibrator
		(UTC)	(m)	(°)	(′′)		(s)	of frames

1	2009 Jan. 19	07:43:32	13.9/27.9/41.9	73	0.9	1.2	6	75	ν Hya^†
2	2009 Feb. 28	06:15:16	15.6/31.2/46.8	74	0.7	1.1	6	75	ν Hya^†
3	2009 Apr. 15	03:43:30	15.9/31.8/47.8	74	0.8	1.1	6	75	β Crv

Notes.

^(†)

Means that the calibrator was observed before and after the science target. Seeing is in the visible.

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