Hipparcos astrometry for 257 stars using Tycho-2 data

Authors
Fabricius, C Makarov, VV
Citation
C. Fabricius et Vv. Makarov, Hipparcos astrometry for 257 stars using Tycho-2 data, ASTR AST SS, 144(1), 2000, pp. 45-51
Citations number
13
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
ISSN journal
03650138 → ACNP
Volume
144
Issue
1
Year of publication
2000
Pages
45 - 51
Database
ISI
SICI code
0365-0138(200005)144:1<45:HAF2SU>2.0.ZU;2-U
Abstract
We present improved Hipparcos astrometry for 257 Hipparcos stars, resolved into 342 components. For 64 of the stars no astrometry was obtained in the Hipparcos Catalogue, while for the remaining stars additional components ha ve been added by this solution or the positions have been revised considera bly. We have used the published Hipparcos transit data for the new solution s. together with results from the second reduction of the Tycho data for de fining better initial values.