Marco, Francisco J.; Martínez Uso, María José; López, Jose A.(Cambridge University Press, 2018-03-07)
[EN] One of the important challenges that Gaia imposes on the Astrometric Catalogs, is a careful study in everything affected by parallax. A particularly important case is the necessary linkage Gaia - HCRF - ICRF2, which ...
Marco, Francisco J.; Martínez Uso, María José; López, Jose A.(Cambridge University Press, 2018-03-07)
[EN] The aim of this paper is the study of the impact that the consideration of different
physical properties as magnitude and spectral type of stars has on the geometric relations
between Hipparcos2 and UCAC4. In this ...