- 初始質(zhì)量函數(shù)
- 起始質(zhì)量函數(shù)
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initial mass function中文什么意思
例句與用法
- Comparing with the current observations , which include the number density distribution in space , mass function , etc . , the so - called standard modes for both the power law and gaussian cluster initial mass functions are selected among many runs of simulations . the deviation from the standard modes , which is resulted from the change of the parameter for the initial conditions , is discussed in detail . the discussion of the model parameters is also presented although they are adopted as the typical values based on previous work
對應(yīng)一定的初始分布我們發(fā)現(xiàn)無論是冪律的還是對數(shù)高斯的球狀星團初始質(zhì)量譜經(jīng)過長時間的動力學(xué)演化都會得到和現(xiàn)在銀河系觀測到的球狀星團系統(tǒng)相符的對數(shù)高斯的質(zhì)量分布；動力學(xué)演化會明顯地改變球狀星團系統(tǒng)的空間密度分布，靠近銀心區(qū)域的球狀星團瓦解得更多；經(jīng)過動力學(xué)演化后的球狀星團速度分布函數(shù)在靠近銀心的區(qū)域明顯得不同于初始分布，初始擁有較大軌道偏心率的球狀星團更容易瓦解。 - The number density distribution of globular cluster in space will change with time due to the dynamic evolution , especially for those in the central region of the galaxy ; 5 . for the power law initial cluster mass function , the peak value of the mass function after the dynamic evolution is sensitive to the lower limit of the initial mass function we adopt . the suggested value in this paper is - 104m , which is consistent with that reduced from the dynamical analyses for the giant molecular clouds
對于冪率的初始質(zhì)量譜，球狀星團系統(tǒng)動力學(xué)演化后質(zhì)量分布的轉(zhuǎn)折點質(zhì)量主要是由初始質(zhì)量函數(shù)的質(zhì)量下限決定的，最為適合的值為10 ~ 4m _ ；冪率的初始質(zhì)量譜的譜指數(shù)對球狀星團系統(tǒng)動力學(xué)演化后質(zhì)量分布的轉(zhuǎn)折點質(zhì)量也有影響，其最佳值為1 . 5 2 . 0 ；經(jīng)過大約5gyr的動力學(xué)演化，冪率的初始質(zhì)量譜就會演化成為高斯的對數(shù)質(zhì)量分布并具有在隨后的動力學(xué)演化中保持對數(shù)高斯形式質(zhì)量分布的特性。
百科釋義
The initial mass function (IMF) is an empirical function that describes the distribution of initial masses for a population of stars. The IMF is often given as a probability distribution function (PDF) for the mass at which a star enters the main sequence (begins hydrogen fusion).
詳細百科解釋