CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars

Details CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007a%26a...472.1055s&link_type=abstract

Astronomy and Astrophysics, Volume 472, Issue 3, September IV 2007, pp.1055-1057

Astronomy and Astrophysics

Astrophysics

5

Stars: Binaries: Visual, Astrometry

Scientific paper

Context: We measured the angular separations, position angles, Δ V, Δ y and Δ I of wide visual double stars during the period 2003-2005. At least one component of the double stars in our sample has an entry in the Hipparcos catalogue. Aims: Our measurements are a contribution to the study of the nature of these double stars. Methods: The northern double stars of the project were observed with the 1.2 m telescope of the Kryonerion observatory and the southern with the 1.0 m SAAO. We performed multiple-exposure CCD imaging of our targets and used the standard procedure of data reduction and astrometric CCD calibrations. Results: We present measurements of 213 northern and 219 southern wide binaries.
Based on observations made at Kryonerion Observatory of the National Observatory of Athens, Greece, and the South African Astronomical Observatory. Full Table 1 and Tables 2, 3 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/472/1055

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