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Table 3.

ULX abundances and frequencies across host galaxy morphological types.

Sample cULXss
Sub-sample All El. Le. ESp. LSp. Ir.
ULXs 292 49 26 107 92 17
Galaxies 149 18 16 53 45 13
Pot. gals. 722 151 75 109 114 147
ULX/gal. 0.40 0.32 0.35 0.98 0.81 0.12
Gal. frac. 0.21 0.12 0.21 0.49 0.37 0.09

Sample cbULXss
Sub-sample All El. Le. ESp. LSp. Ir.

ULXs 69 10 16 25 10 1
Pot. gals. 12 166 2174 1787 2052 1416 850
ULX/gal.(%) 0.57 0.46 0.90 1.22 0.71 0.12

Notes. Number of ULX candidates in cULXss and cbULXss, number of galaxies that host them, number of galaxies that could potentially host them, ULX frequencies, and fraction of galaxies with candidates, divided according to morphological groups of their host galaxies. No distinction is made between bright ULXs and their host galaxies as no more than one candidate has been found in each. For the cbULXss, the ULX frequencies/fraction of galaxies are presented in %.

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