4 citations · 6 across the 3 of their papers we have counts for
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astro-ph.IM2026★ 1 cited
Astrometric properties of reference frame sources as a function of redshift
Zhiyun Zhang, N. Liu, Xiaxuan Zhang +8
Previous studies based on the latest realisation of the International Celestial Reference Frame (ICRF3) have suggested a correlation between astrometric properties (such as the rad…
astro-ph.IM2017★ 4 cited
Overall properties of the Gaia DR1 reference frame
N. Liu, Z. Zhu, J. -C. Liu +1
We compare quasar positions of the auxiliary quasar solution with ICRF2 sources using different samples and evaluate the influence on the {\it Gaia} DR1 reference frame owing to th…