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Galactic coordinate system based on multi-wavelength catalogs

Zhu, Zi; Liu, Jia-Cheng; Ding, Ping-Jie

The currently used Galactic coordinate system (GalCS) is based on the FK5 system at J2000.0, which was transformed from the FK4 system at B1950.0. The limitations and misunderstandings related to this transformed GalCS can be avoided by defining a new GalCS that is directly connected to the International Celestial Reference System (ICRS). With mor…