Spectroscopic and speckle-interferometric observations of the multiple system ADS 11061

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Title:		Spectroscopic and speckle-interferometric observations of the multiple system ADS 11061
Authors:		Al-Wardat, M.; Balega, Yu. Yu.; Leushin, V. V.; Musaev, F. A.
Journal:		Kinematika i Fizika Nebesnykh Tel, Suppl, no. 4, p. 49-52
Publication Date:		04/2003
Origin:		KFNT
Language:		Russian
Bibliographic Code:		2003KFNTS...4...49A

Abstract

Binary star 41 Dra is a member of the hierarchical quadruple system ADS 11061 which includes 41 Dra with a very big eccentricity (e=0.9755). Since 1993 we have performed speckle interferometric observations of the system using the 6-m BTA telescope. In addition, high resolution spectroscopy of the system was made with the echelle spectrographs of the SAO 1-m telescope and the Terskol 2-m telescope. The observations covered the periastron passage in June 2001.

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