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Table 2

Characteristic values of superbubble blow-out.

Model z u,acc N blow ) )/tD
[H] [Myr]

SNsym 1.380 2.34 56 38.9 2.54
Windsym0 =  −0.932) 0.963 1.31 47 (7.4 1037) 26.1 1.62
IMFsym1 =  −1.15) 0.858 1.12 27 22.8 1.41
IMFsym2 =  −1.35) 0.760 0.96 25 20.1 1.23
IMFsym3 =  −1.7) 0.583 0.69 24 15.2 0.93

SNoff 1.325 2.87 3 7.2 1.93
Windoff0 =  −0.932) 0.886 1.87 12 (1.9 1037) 4.7 1.30
IMFoff1 =  −1.15) 0.779 1.69 8 4.0 1.14
IMFoff2 =  −1.35) 0.680 1.53 13 3.5 0.99
IMFoff3 =  −1.7) 0.509 1.29 29 2.6 0.74

Notes. Rows 1−5 of the table: symmetric model in a Lockman layer with H = 500  pc, n0 = 0.5   cm-3; rows 6 − 10: off-plane model with the position of the star cluster at z0 = 0.7H and H = 100  pc, n0 = 10   cm-3. : beginning of acceleration at zu (top of the bubble) in terms of ; zu,acc: coordinate zu at ; Nblow: minimum number of stars for blow-out, the wind luminosity in erg/s is transformed into a number of SNe using a time interval of 20 Myr; ): time at acceleration in units of Myrs for a bubble with Nblow stars; )/tD: time at acceleration in units of the characteristic timescale (tD means tSN, Eq. (32) or tIMF, Eq. (37), for the respective model).

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