photon tiring limit
hadd-e xastegi-ye foton
Fr.: limite par fatigue du photon
The maximum → mass loss rate of a star when the → wind luminosity equals the total available → stellar luminosity. The mechanical luminosity of the wind at infinity is given by: Lwind = Mdot (v∞2/2 + GM/R) = Mdot (v∞2/2 + vesc2/2). For Lwind = L*, the mass loss rate is Mdotmax = 2L*/(v∞2 + vesc2). Following Owoki & Gayly (1997), Mdottir is the maximum mass loss rate when the wind just escapes the gravitational potential, with v∞ tending toward zero. Mdottir is much larger than typical mass loss rates from → line-driven winds, where the driving lines become saturated with increasing density limiting the wind mass loss rates to about 10-4 Msun yr-1 in even the most luminous stars.