Table 1
Global and technical parameters for simulations with MSPs.
Global parameters | |||||||||
---|---|---|---|---|---|---|---|---|---|
N1 | Rg | Q1 | Wo1 | fractidal | ttidal (Gyr) | Tidal Field | Rh1 | IMF | Binary fraction |
400 000 | 1 | 0.5 | 3 | 1 | 1000 | TF | 1 | Kroupa (2001), | 95% |
800 000 | 2 | 0.6 | 4 | 2 | 1 | nTF | 2 | m1 max = 150 M⊙ | |
1 600 000 | 4 | 0.7 | 5 | ||||||
3 200 000 | 6 | ||||||||
Technical parameters | |||||||||
N2 | N2/Ntot | Wo2 | concpop | Q2 | m2 max(M⊙) | tstart (Myr) | tend (Myr) | Mstart(M⊙) | Mend(M⊙) |
50 000 | 150 000/550 000 | 7 | 0.05 | 0.5 | 20 | 0.05 × tend | 50 | 0 | Mass |
100 000 | 50 000/850 000 | 0.1 | 8 | 0.5 × tend | 100 | computed | |||
150 000 | 100 000/900 000 | 0.2 | equal to | from N2, | |||||
200 000 | 300 000/1 200 000 | tdelay | IMF and | ||||||
300 000 | 400 000/2 000 000 | ejected by | |||||||
400 000 | 200 000/3 400 000 | AGB stars |
Notes. The meaning of the parameters is as follows: N1 and N2 – number of 1P and 2P objects, respectively; Wo1 and Wo2 – King model parameters for 1P and 2P, respectively; Q1 and Q2 – virial parameters; Rg – the size of the GC circular orbit; Rh1 – half-mass radius of 1P; tidal field – tidally filling (TF) or underfilling (nTF); IMF – initial mass function; binary fraction – the ratio between the number of binaries and total objects; ttidal− time when GC orbit size increases; concpop – the ratio of half-mass radii (Rh2/Rh1); m1max and m2max – maximum stellar masses; tstart – initial time of gas re-accretion; tend – completion time of accretion; Mstart and Mend – mass of pristine and accreted gas, respectively. The GC masses presented in this work range from 4.75 × 105 M⊙ to 3.83 × 106 M⊙ The GC models presented in this work are designed to investigate how environmental factors influence the formation and evolution of MSPs. While they are not calibrated to reproduce the full diversity of MWGCs, we use them in Section 4 to draw insights into the role of the galactic environment in shaping GC evolution.
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