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Artificial Galaxy: Full Matrix of Stages

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Artificial Galaxy: Full Matrix of Stages

 

Table 7 represents the full matrix of stages of binary stars in a model spiral galaxy with the total mass of matter in stars of tex2html_wrap_inline8891 for tex2html_wrap_inline10986 (flat spectrum), tex2html_wrap_inline8893 and Lyne and Lorimer's distribution for kick velocities (equation 7.4.2)  with tex2html_wrap_inline8895 km stex2html_wrap_inline8853 (which gives the transverse velocity distribution for modeled pulsars best-fitting Lyne and Lorimer (1994)[132] data; Figure 24). The flat initial mass ratio spectrum was chosen because it is currently the most popular among researchers (e.g. Tutukov and Yungelson (1993b)[197]; Pols and Marinus (1994)[163]) and to which many physically reasonable assumptions about the initial mass ratio leads (say, both masses obeying a Salpeter-like power law, or the total binary mass and mass of the primary obeying Salpeter's law, etc.). 

The rows and columns of Table 7 correspond to the evolutionary states of the primary and the secondary binary component, respectively. Numbers less than unity are given in parentheses indicating that the corresponding binary state occurs quite rarely in the Galaxy; the dots mean that no such system was formed during a typical computational run of 1 million initial binaries.



Mike E. Prokhorov
Sat Feb 22 18:38:13 MSK 1997