SIMBAD references

2000AJ....120.2638H - Astron. J., 120, 2638-2648 (2000/November-0)

CCD speckle observations of binary stars from the southern hemisphere. II. Measures from the Lowell-Tololo telescope during 1999.


Abstract (from CDS):

Speckle observations of 145 double stars and suspected double stars are presented and discussed. On the basis of multiple observations, a total of 280 position angle and separation measures are determined, as well as 23 high-quality nondetections. All observations were taken with the (unintensified) Rochester Institute of Technology fast-readout CCD camera mounted on the Lowell-Tololo 61 cm telescope at the Cerro Tololo Inter-American Observatory during 1999 October. We find that the measures, when judged as a whole against ephemeris positions of binaries with very well-known orbits, have root mean square deviations of 1°.8±0°.3 in position angle and 13±2 mas in separation. Eleven double stars discovered by Hipparcos were also successfully observed, and the change in position angle and/or separation since the Hipparcos observations was substantial in three cases.

Abstract Copyright:

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

VizieR on-line data: <Available at CDS (J/AJ/120/2638): table2.dat table3.dat>

Simbad objects: 150

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