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Table 3.

Encounter age with open clusters and corresponding peculiar velocity.

HMXB Cluster Encounter age vpec M1ZAMS M2ZAMS Xfer
[Myr] [km s−1] [ M] [ M] [ M]
1A 0114+650 UBC 600 −4.4 37 13 12 4 ± 3
NGC 457 −17 50 40 18 ...
LS I+61 303 IC 1805 −5 9 55 31 ...
UBC 191 −16 12 39 19 ...
NGC 884 −15 14 51 20 ...
NGC 957 −15 18 15 12 1 ± 3
ASCC 9 −10 33 18 15 ...
X Per ASCC 13 −24 33 28 15 1 ± 4
HD 259440 Stock 10 −38 31 12.7 10 6 ± 3
COIN-Gaia 28 −47 11 28 15 4 ± 3
4U 1700-377 UBC 323 −1.9 110 31 27 19 ± 6
NGC 6231 −2.1 62 24.6 23 23 ± 6
IGR J17544−2619 UBC 571 −5.4 37 14.4 14 10 ± 3
UBC 540 −28 54 14 11 12 ± 3
Cyg X-1 NGC 6871 −4.4 26 56 32 ...

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