000002016 001__ 2016
000002016 005__ 20160701171657.0
000002016 0247_ $$2DOI$$a10.1051/0004-6361:20065639
000002016 037__ $$aASTROimport-173
000002016 100__ $$aLampens, P.
000002016 245__ $$aMulticolour CCD measurements of visual double and multiple stars. III
000002016 260__ $$c2007
000002016 520__ $$aContext: Recent CCD observations were performed in the period 1998-2004 for a large sample of visual double and multiple stars selected from the Hipparcos Catalogue and/or from the Gliese Catalogue of Nearby Stars. Aims: Accurate astrometric and photometric data allowing us to characterise the individual components are provided. These data are compared to Hipparcos data or to data from an older epoch to assess the nature of the observed systems.  Methods: We simultaneously apply a Moffat-Lorentz profile with a similar shape to all detected components and adjust the profile parameters from which we obtain the relative astrometric position (epoch, position angle, angular separation) as well as differential multi-colour photometry (filters (B)VRI).  Results: We thus acquired recent data for 71 visual systems of which 6 are orbital binaries, 27 are nearby, and 30 are multiple systems. In three of these cases, the systems remained unresolved. 23 new components were detected and measured. Two new visual double stars of intermediate separation were also found. The estimated accuracies in relative position are 0.04° and 0.01 arcsec respectively, while those in differential photometry are of the order of 0.01-0.02 mag in general. Conclusions: .The nature of the association of 55 systems is evaluated. New basic binary properties are derived for 20 bound systems. Component colours and masses are provided for two orbital binaries. Based on observations collected at the National Astronomical Observatory, Rozhen, and the Astronomical Observatory, Belogradchik, both operated by the Institute of Astronomy, Bulgarian Academy of Sciences. Also based on data obtained by the Hipparcos astrometry satellite. Appendix A is only available in electronic form at http://www.aanda.org Tables 4-6 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr ( or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/464/641 
000002016 700__ $$a Strigachev, A.
000002016 700__ $$a Duval, D.
000002016 773__ $$c641-645$$i2$$pAstronomy and Astrophysics$$v464$$y2007
000002016 85642 $$ahttp://esoads.eso.org/abs/2007A%26A...464..641L
000002016 905__ $$apublished in
000002016 980__ $$aREFERD