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Issue A&A
Volume 384, Number 1, March II 2002
Page(s) 180 - 189
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20011822



A&A 384, 180-189 (2002)
DOI: 10.1051/0004-6361:20011822

The Tycho double star catalogue

C. Fabricius1, E. Høg1, V. V. Makarov1, 2, 3, B. D. Mason3, G. L. Wycoff3 and S. E. Urban3

1  Copenhagen University Observatory, Juliane Maries Vej 30, 2100 Copenhagen Ø, Denmark
2  Universities Space Research Association, 300 D Street S.W., Washington, DC 20024, USA
3  United States Naval Observatory, 3450 Massachusetts Avenue N.W., Washington, DC 20392-5420, USA

(Received 20 November 2001 / Accepted 18 December 2001 )

Abstract
We report the discovery of $13\,251$ visual double stars, mostly with separations between 0.3 and 1 arcsec, from a dedicated re-reduction of the Tycho data from the star mapper of the ESA Hipparcos satellite. The new doubles are combined with $18\,160$ WDS systems identified in the Catalogue, and 1220 new doubles, to form the Tycho Double Star Catalogue, TDSC, a catalogue of absolute astrometry and $B_{\rm T}$, $V_{\rm T}$ photometry for $66\,219$ components of $32\,631$ double and multiple star systems. We also include results for $32\,263$ single components for systems unresolved in TDSC, and a supplement gives Hipparcos and data for 4777 additional components. The TDSC thus contains a total of $103\,259$ entries. Cross identifications are given to WDS, HD, Hipparcos and .


Key words: stars: binaries: visual -- catalogs -- astrometry

Offprint request: C. Fabricius, cf@astro.ku.dk

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