Two Component Model of Initial Masss Function

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

Weibull analyses given to the initial mass function (IMF) deduced by Miller and Scalo(1979) have shown that the mass dependence of IMF is an exp[-alpha x m]- form in low mass range while in the high mass range it assumes an exp[-alpha x sqrt(m)/ sqrt(m) - form with the break-up being at about the solar mass. Various astrophysical reasonings are given for identifying the exp[-alpha x m] and exp[-alpha x sqrt(m)/sqrt(m) with halo and disk star characteristics, respectively. The physical conditions during the halo formation mass stars favoured. The two component nature of IMF is in general accord with the d dichotomies in various stellar properties.

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