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We examine the impact of fiber assignment on clustering measurements fromfiber-fed spectroscopic galaxy surveys. We identify new effects which wereabsent in previous, relatively shallow galaxy surveys such as BaryonOscillation Spectroscopic Survey . Specifically, we consider deep surveyscovering a wide redshift range from z=0.6 to z=2.4, as in the Subaru PrimeFocus Spectrograph survey. Such surveys will have more target galaxies than wecan place fibers on. This leads to two effects. First, it eliminatesfluctuations with wavelengths longer than the size of the field of view, as thenumber of observed galaxies per field is nearly fixed to the number ofavailable fibers. We find that we can recover the long-wavelength fluctuationby weighting galaxies in each field by the number of target galaxies. Second,it makes the preferential selection of galaxies in under-dense regions. Wemitigate this effect by weighting galaxies using the so-called individualinverse probability. Correcting these two effects, we recover the underlyingcorrelation function at better than 1 percent accuracy on scales greater than10 Mpc/h.

Mitigating the impact of fiber assignment on clustering measurements from deep galaxy redshift surveys