Speckle Interferometry of Southern Double Stars. III. Measures from the Cesco Observatory, 1994-1996

Autor:	Carlos E. Lopez, Otto G. Franz, Terrence M. Girard, James W. Davidson, E. P. Horch, J. Gethyn Timothy, William F. van Altena
Rok vydání:	2006
Předmět:	Physics Speckle pattern Stars Space and Planetary Science Observatory Detector Binary star Astronomy Astronomy and Astrophysics Speckle imaging Astrophysics Position angle Ephemeris
Zdroj:	The Astronomical Journal. 131:1000-1006
ISSN:	1538-3881 0004-6256
DOI:	10.1086/498862
Popis:	Position angle and separation measures of 482 primarily southern binary stars are presented. These were obtained from speckle observations taken at the Carlos U. Cesco Observatory, El Leoncito, Argentina, using a multianode microchannel array detector during the period 1994 July to 1996 July. When comparing our measures to the ephemeris predictions in the case of objects with well-determined orbits, we find that our measures have a precision of approximately 13 mas per observation in separation and 075/ρ in position angle, where ρ is the separation in arcseconds. We briefly discuss the photometric properties of the data and highlight four southern binaries of particular interest that emerge from the list presented.
Databáze:	OpenAIRE
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