Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402...13l&link_type=abstract
Proceedings of the ESA Symposium `Hipparcos - Venice '97', 13-16 May, Venice, Italy, ESA SP-402 (July 1997), p. 13-18
Astronomy and Astrophysics
Astronomy
10
Scientific paper
The Hipparcos Catalogue provides astrometric results for 117955 catalogue entries, including the position at epoch 1991.25, the parallax, and the proper motion components. For most of the entries these five parameters, representing the assumed uniform space motion of a single star, were sufficient to represent the astrometric measurements. Many of the objects are in reality double or multiple stars, and for 17917 entries additional parameters were introduced to cope with the various manifestations of multiplicity. Details on the additional parameters are contained in the Double and Multiple Systems Annex, divided in five parts according to the type of solution: resolved systems with astrometric data on each component (13211 entries with a total of 24588 components), astrometric binaries with curved orbital motion but without a periodic solution (2622 entries), astrometric binaries with orbital solutions (235 entries), astrometric binaries revealed through the variability of one of the components (`variability-induced movers'; 288 entries), and objects where the single-star hypothesis was rejected based on the residuals although no specific physical model of the multiplicity could be determined (`stochastic' solutions; 1561 entries). More than a third of the entries in the Annex were not previously known to be non-single. The construction of the Annex and the characteristics of the different types of solution are described.
No associations
LandOfFree
The HIPPARCOS Catalogue Double and Multiple Systems Annex 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 The HIPPARCOS Catalogue Double and Multiple Systems Annex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The HIPPARCOS Catalogue Double and Multiple Systems Annex will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1879012