FATHOMER survey: III. Preliminary HI galaxy identification results

We present the HI galaxy observation results of the FATHOMER (FAst neuTral HydrOgen intensity Mapping ExpeRiment), a pilot drift scan survey by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The survey comprises 28 hours of observations over 7 nights in 2021, covering a $60\, \deg^2$ sky area in the frequency range 1.05–1.45 GHz. There are 702 HI galaxy candidates identified within the observed sky. A total of 702 galaxies are identified with HI mass above 10^6.2 Msun, signal-to-noise ratio greater than 5, and redshift z < 0.09.