Properties and nature of Be stars - 28. Implications of systematic observations for the nature of the multiple system with the Be star o Cassiopeæ and its circumstellar environment

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Volume 517 (July 2010)

A&A, 517 (2010) A24

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Table 4:

NPOI observations and model fit results.
UT Date	Julian Year	Triangles	Calibrator	$\rho$ [mas]	$\theta$ [deg]	$\sigma_{\rm maj}$ [mas]	$\sigma_{\rm min}$ [mas]	PA [deg]
2005 Sep. 13	2005.6996	EC-W7C-W7E	$\kappa$ And	9.5	134.3	0.58	0.10	120
2005 Sep. 15	2005.7051	EC-W7C-W7E	$\kappa$ And	10.1	132.4	0.55	0.09	119
2006 Nov. 18	2006.8796	EC-W7C-W7E, W7C-CW-W7W	$\mu$ And	7.5	19.5	0.47	0.11	95
2007 Aug. 9	2007.6024	EC-NC-EN, E6E-E6N-EN	$\zeta$ Cas	16.8	270.4	0.54	0.15	46
2007 Aug. 18	2007.6271	EC-NC-EN, E6E-E6N-EN	$\zeta$ Cas	17.0	268.1	0.52	0.16	38
2007 Aug. 20	2007.6326	EC-NC-EN, E6E-E6N-EN	$\zeta$ Cas	16.9	269.1	0.57	0.15	46

Notes. The listed triangles of baselines refer to the astrometric stations E (East), C (Center), W (West), and N (North), and the imaging stations W7 and E6. $\rho$ and $\theta$ (measured east from north) refer to the position of the secondary relative to the primary component. $\sigma_{\rm maj}$ and $\sigma_{\rm min}$ and PA refer to the major, minor axis, and position angle of the error ellipse of the position measurement. The shape and orientation of this error ellipse is directly related to the synthesized beam.

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