V. G. Orlov and V. V. Voitsekhovich
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70-264, C.P. 04510, México D. F., México (orlov@astro.unam.mx).
Received September 3 2014.
Accepted November 28 2014.
]]> RESUMEN
Presentamos mediciones de estrellas dobles mediante interferometría de motas, obtenidas en agosto de 2010 con el telescopio de 1.5 m y en mayo de 2010 con el telescopio de 2.1 m del Observatorio Astronómico Nacional en SPM (México). Reportamos los resultados de 331 mediciones de 321 sistemas, con una magnitud límite para las primarias de V = 12.9. Las separaciones angulares medidas están comprendidas entre 0.13 y 7.39 segundos de arco. 269 pares resultaron tener separaciones de menos de 1 segundo de arco. El error medio en las separaciones es de 0.032 segundos de arco, y en los ángulos de posición, 2 grados. La ambigüedad usual de 180 grados en los ángulos de posición fue corregida para la mayoría de ellos usando observaciones de otros autores.
ABSTRACT
We present speckle interferometric measurements of double stars performed during August of 2010 with the 1.5 m telescope and during May of 2010 with the 2.1 m telescope of the Observatorio Astronómico Nacional at SPM (México). We report here the results of 331 measurements of 321 systems with a primary limiting magnitude of V = 12.9. The measured angular separations range from 0".13 to 7".39. Two hundred and sixty-nine pairs have separations less than 1". The mean error in separation is 0".032 and 2° in position angle. The usual 180° ambiguity was corrected for the majority of position angles by comparison with observations performed by other observers.
Key Words: binaries: visual — stars: fundamental parameters — techniques: high angular resolution — techniques: interferometric.
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ACKNOWLEDGMENT
]]> The speckle interferometry program at the OAN telescopes is supported by the Dirección General de Asuntos del Personal Académico (UNAM, México) under project IN102514.
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