| Issue |
A&A
Volume 422, Number 3, August II 2004
|
|
|---|---|---|
| Page(s) | 1023 - 1029 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20047172 | |
| Published online | 16 July 2004 | |
Multicolour CCD measurements of nearby visual double stars. II *,**
1
Institute of Astronomy, Bulgarian Academy of Sciences, 72 Tsarigradsko Shosse Blvd., 1784 Sofia, Bulgaria e-mail: anton@astro.bas.bg
2
Royal Observatory of Belgium, Av. Circulaire 3, 1180 Brussels, Belgium e-mail: Anton.Strigachev@oma.be;Patricia.Lampens@oma.be
Received:
30
January
2004
Accepted:
13
April
2004
We present accurate CCD astrometric and photometric data for
31 nearby visual double stars in the standard filters BVRI.
The observations were collected with a 1.3-m telescope in
2001–2002.
The results consist of relative astrometric positions (epoch, angular
separation and position angle) and differential BVRI photometry of the
components. Mean errors are: 0.01´´ for the separation;
0.06° for the position angle; and 0
015 for the photometric data.
Comparing the relative positions at different epochs, we evaluate the
physical association of the systems. We additionally derive fractional masses and
true separations for the most probable binary systems and, whenever orbits
are available, also total and component masses.
Key words: stars: binaries: visual / techniques: photometric / stars: fundamental parameters
Table [see full textsee full text] is only available in the electronic form at http:www.edpsciences.org.
Tables [see full textsee full text] and [see full textsee full text] 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/422/1023
© ESO, 2004
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