Astrometric suitability of optically-bright ICRF sources for the alignment with the future Gaia celestial reference frame

Context. The International Celestial Reference Frame (ICRF), currently based on the position of 717 extragalactic radio sources observed by VLBI (Very Long Baseline Interferometry), is the fundamental celestial reference frame adopted by the International Astronomical Union (IAU) in 1997. Within the...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2008-10, Vol.490 (1), p.403-408
Hauptverfasser:	Bourda, G., Charlot, P., Le Campion, J.-F.
Format:	Artikel
Sprache:	eng
Schlagworte:	astrometry Astronomy Astrophysics Cosmology and Extra-Galactic Astrophysics Earth, ocean, space Exact sciences and technology Physics quasars: general reference systems Sciences of the Universe
Online-Zugang:	Volltext
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