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Table 1.

Number of detectable DWDs in a satellite with total stellar mass of 2 × 107M, age of 13.5 Gyr, and distance of 20 kpc for 4-year (10-year) long LISA mission assuming three SFH models: exponentially declining (fiducial), constantly star-forming and single burst.

CE evolution model γα αα
Metallicity 0.0001 0.001 0.002 0.0001 0.001 0.002

Exponentially declining SFH 45 (66) 37 (58) 31 (47) 41 (56) 35 (48) 28 (39)
Constant SFH 53 (98) 54 (96) 45 (83) 56 (99) 54 (99) 46 (84)
Single burst SFH 47 (54) 20 (47) 26 (52) 27 (34) 14 (41) 31 (42)

Notes. These numbers scales linearly with the satellite’s mass. Note also that these results can be simply re-scaled to a different binary fraction by multiplying by 1.3 and 1.6 to get binary fractions of 70% and 90% respectively.

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