Multicolour CCD Measurements of Visual Double and Multiple Stars. III

Details Multicolour CCD Measurements of Visual Double and Multiple Stars. III Multicolour CCD Measurements of Visual Double and Multiple Stars. III

2006-11-16

arxiv.org/abs/astro-ph/0611515v1

Astronomy and Astrophysics

Astrophysics

7 pages, 2 Postscript figures, 1 appendix, 1 annex containing 3 tables. Appendix A and Tables~4-6 are only available in electr

Scientific paper

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. Accurate astrometric and photometric data allowing to characterize the individual components are provided. These data are confronted to Hipparcos data or to data from an older epoch in order to assess the nature of the observed systems. 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). 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 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 deg and 0.01" respectively, while those in differential photometry are of the order of 0.01-0.02 mag in general. 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.

Affiliated with

Also associated with

No associations

Rating

Multicolour CCD Measurements of Visual Double and Multiple Stars. III does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multicolour CCD Measurements of Visual Double and Multiple Stars. III, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multicolour CCD Measurements of Visual Double and Multiple Stars. III will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-622272