Blending effects on shear measurement synergy between Euclid-like and LSST-like surveys

Open Access

Table 1.

Overview of simulation setups.

	LSST-like		Euclid-like
Pixel scale	$0 \overset{″}{.} 2$ $0{{\overset{\prime\prime}{.}}}2$		$0 \overset{″}{.} 1$ $0{{\overset{\prime\prime}{.}}}1$
Effective background noise	A 5σ point source depth of 26.9		A 5σ point source depth of 26.3
PSF profile	Circular Moffat profile with parameters drawn from the KiDS survey		Circular Airy profile for a telescope with a diameter of 1.2m and an obscuration of 0.3

Galaxy positions	Grid	Random	Grid	Random
Magnitude cut	[20.0, 25.2]	[20.0, 27.5]	[20.0, 25.2]	[20.0, 27.5]

Effective simulated area	100 deg²
Input shear (g₁, g₂)	(+0.0283, +0.0283), (+0.0283, −0.0283), (−0.0283, +0.0283), (−0.0283, −0.0283)
Shape noise cancellation	Each image is paired with galaxies rotated by 90°

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