Resolving the asymmetric inner wind region of the yellow hypergiant IRC +10420 with VLTI/AMBER in low and high spectral resolution mode

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Table 2:

Summary of the AMBER observations of IRC+10420 and the calibrator star HD 232078 in high-spectral resolution mode from Oct 14, 2008 using the UT telescope configuration UT1-UT2-UT4.
${\rm object}$	${\rm UTC}$	$N_{\rm frames}$	$B_{\rm p}$	PA	${\rm seeing}$
			[ m]	$[\hbox{$^\circ$ }]$	$[\hbox{$^{\prime\prime}$ }]$
IRC + 10420	00:26:40	125	54-129	36-75	0.9
${\rm HD~232078}$	00:03:59	125	51-130	37-78	1.1

All measurements were carried out using the fringe tracker FINITO and with an exposure time of 3 s. The uniform-disk diameter of HD 232078 (spectral type K3IIp), $d_{\rm UD} = 0.74\pm0.1$ mas, was taken from the CHARM2 catalogue (Richichi et al. 2005). $N_{\rm frames}$ is the total number of recorded frames. For the meaning of the other columns, see Table 1.

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