Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jdso....6..266r&link_type=abstract
Journal of Double Star Observations, vol. 6, no. 4, p. 266-273.
Astronomy and Astrophysics
Astrophysics
Scientific paper
LIADA's (Liga Iberoamericana de Astronomía) Double Star Section reports angular separations, position angles, V magnitudes and spectral types for 37 neglected visual double stars obtained in 2005. A total of 128 measures were averaged into 80 mean positions that range in separation from 3.12" to 348.74". Our observations were made by means of several techniques (CCD detectors, astrometric eyepieces, photographic plates, and astrometric catalogs). About 51 % of double stars were unconfirmed pairs discovered by John Herschel which remained neglected since before 1850. BVIJHK photometries, astrometric, and kinematical data were used/obtained to determine astrophysical parameters (spectral types and luminosity classes, photometric distances, etc). The nature of the double stars were determined using several criteria classifying them as optical, physical, or common origin pairs. Only 5-6 % were physical double stars. Two new systems were discovered.
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