SIMBAD references

2001AJ....121.1597H - Astron. J., 121, 1597-1606 (2001/March-0)

Speckle interferometry of southern double stars. II. Measures from the CASLEO 2.15 meter telescope, 1995-1996.

HORCH E., VAN ALTENA W.F., GIRARD T.M., FRANZ O.G., LOPEZ C.E. and TIMOTHY J.G.

Abstract (from CDS):

Relative astrometry is presented for 198 observations of 160 double stars. The data were obtained at the 2.15 m telescope at the Complejo Astronómico El Leoncito (Argentina) with a multianode microchannel array (MAMA) detector system. Five high-quality nondetections are also reported. When judged against ephemeris positions for binaries with very well determined orbits, the separation residuals exhibit a root mean square deviation of 13.2+3.4–1.9 mas and the position angle residuals exhibit rms deviation of 2°.9+0°.8–0°.5. Factors affecting the measurement precision are discussed.

Abstract Copyright: ∼

Journal keyword(s): Astrometry - Stars: Binaries: Close - Stars: Binaries: Visual - Techniques: Interferometric

Simbad objects: 166

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