evolution of stars 中文意思是什麼
evolution of stars
解釋
恆星演化-
These stars are undergoing important mass loss process and are likely to represent a more evolved phase of the stellar evolution than visual carbon stars
紅外碳星經歷了重要的質量損失過程，是光學碳星演化的後期。 -
Evolution of stars of all masses takes place on a hydrodynamic time scale.
各種質量的恆星的演化，均以流體力學的時間尺度進行。 -
On the bases of the galaxy evolution theory, we use the therotical chemical evolution model of three zone ( such as halo, thick disk and thin isk ) and multi - phase ( diffuse gas, molecular clouds, stars of both low and high mass, the remnants ). by comparing with the observational constraints, such assurface densities, age - metallicity relation, g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ], supernovae rates, infall rates. the rationality of the model is verified. based on the theory model, we calculate the abundance of neutron capture element
本文正是在銀河系化學演化的基礎上，利用銀河系的三成分（ threezone ） （即暈、厚盤和薄盤）多相（ multi - phase ） （氣體，分子云，大、小質量恆星以及剩餘物質）的化學演化的理論模型，通過與觀測約束（質量面密度、場星的年齡-金屬豐度關系、太陽附近g矮星金屬含量分佈函數、三成份的特徵量、元素的星系化學演化、超新星的爆炸率、內落速率等）的比較，來檢驗模型的合理性。 -
The aim of the galaxy chemical evolution research is to reproduce the element abundance patter of stars and gas in the galaxy
銀河系化學演化研究的任務，從根本來說，是重現銀河系中恆星與氣體的元素豐度分布圖象。 -
Our results show that, during the evolution of a binary system, the system widens as it loses mass, and the orbital period increase, while orbital eccentricity remains nearly constant, which can explain the distribution regulation of orbital elements of normal g - k giant and barium stars and the distribution character of the heavy - element abundances of barium stars
計算結果表明，隨著星風吸積過程的進行，在星風質量損失階段系統軌道半長軸將增大，導致軌道周期增大，而偏心率變化不大，由此可以解釋普通紅巨星雙星系統和鋇星系統的軌道根數的分佈規律和變化情況以及鋇星重元素豐度分佈特徵。 -
We have collected a mass of stellar activity and rotation data of late - type stars. combining with the results of hipparcos satellite, we reserch the relation between stellar activity and rotation ( include rotation period and rossby number ), and discuss the distribution of stellar rotation period and the evolution of angle momentum of late - type stars
因此，我們收集了晚型恆星的色球和冕球活動的指數以及恆星自轉方面研究發表的大量的觀測資料並結合hipparcos衛星的觀測結果，對晚型恆星的磁活動與恆星自轉間的相關性進行細致的研究。 -
The average abundance distributions of heavy elements in metal - poor stars can provide fairly direct and detailed information on the nucleosynthesis in every stage after the formation of galaxies. furthermore, it can put more accurate constraints on the chemical evolution of neutron - capture elements. the solution to this problem will have important effect on the solution to a series of problems about nuclear astrophysics and the galactic evolution
貧金屬星的中子俘獲元素豐度分佈能提供星系形成后各個階段核合成的較為直接和詳細的信息，並為星系化學演化的研究提供更為準確的約束，這一問題的解決將對核天體物理及星系化學演化的一系列問題的解決產生重要影響。 -
This panel of composite images shows part of the unfolding drama of the last stages of the evolution of sun - like stars
這些合成圖展現的是逐漸顯露的類太陽恆星後期演化的部分圖景。 -
British mathematician, astronomer, and physicist who was an early exponent of the theory of relativity and conducted research on the evolution, structure, and motion of stars
愛丁頓，阿瑟?斯坦利1882 1944英國數學家、天文學家和物理學家，相對論的早期擁護者，在星體演化、結構和運動方面有很深研究 -
Allowing for selection effect, about 1 per cent of all f and g dwarfs are w uma systems, and so understanding the origin and evolution of w uma stars are of importance for investigations in the evolution of the star clusters and galaxies
如果考慮了觀測選擇效應的影響，約1左右的f和g型矮星都是wuma型相接雙星。因此，了解wuma型相接雙星的起源和演化對研究星系和星團的演化有十分重要的意義。 -
These investigators tenaciously argued the evolution of stars downward along the sequence ought to be accompanied by a continuous and very substantial loss of mass.
這些研究者就頑固地爭辯說，恆星沿主星序向下的演化，應該伴隨著連續的和很顯著的質量損失。 -
Our yields increase with the mass of the progenitor main - sequence stars. massive stars ( i. e. 18m < m < 50m ) is the primary sites of the neclearsynthesis of the r - process and can explain the galaxy chemical evolution. 3. we present formula to calculat the r - process galactic chemical evolution of ba peak elements. this formula contains metallicity abundance and point out the relation of the ba peak elements and disscuss the effect of various mass supersnova. besides, our formula can be confirmed by a lot of observations
由此可以解釋以下觀測事實: （ l ） mg ， eu均產生於snh星，但質量范圍不同，在高質量（ > 20 ） eu的產量高， mg的產量（相對于太陽） ，導致暈星中eu / mg > 0 ，而產生mg的質量范圍較大，致使在厚盤的晚期較小質量超新星也開始對mg有貢獻，而這些星對eu的貢獻很小，致使在厚盤星中eu / mg < 0 ，在厚盤中eu / fe隨金屬豐度的升高而降低，仁mg / fe隨金屬豐度的升高而不變 -
Within these tight knots of stars, observers in recent years have discovered bodies that are forbidden by the principles of ordinary stellar evolution ? but that are naturally explained as smashed - up stars
在這些緊密的恆星集團內，觀測者近年已發現通常的恆星演化理論所不容許存在的恆星，於是很自然將它們解釋成撞擊而形成的恆星。 -
Overview of universe ; solar system ; inter - stellar distance ; properties of stars ; classification and evolution ; star nebulae ; star cluster, structure and classification of glaxies ; cosmology ; observateries and telescopes
宇宙概觀、太陽系、星距量測、星的性質、分類與演化、星雲、星團、銀河、系結構分類、宇宙論、天文臺及望遠鏡。 -
Is the most important diagram in discussing stellar evolution. it is a plot of the surface temperature versus the brightness or luminosity of stars
是研究恆星演化最重要的工具，它顯示了恆星表面溫度和恆星光度的關系。 -
Influence of mixing parameters on the structure and evolution of low - and intermediate - mass stars
混合參數對中小質量恆星結構和演化的影響 -
Nature of the universe - chapter eighteen after studying the evolution of stars, we discuss objects much bigger : galaxies
在討論過恆星演化之後，我們會討論一些更大的天體星系。 -
" for his theoretical studies of the physical processes of importance to the structure and evolution of the stars
對恆星結構和演化具有重要意義的物理過程進行的理論研究 -
Before we study the sun, let us learn a bit about atoms, because they are essential in understanding the energy production and the evolution of all stars
在我們詳細探討太陽之前，先要了解一下原子它們在恆星的能量產生和演化中都很重要。 -
What is more important, the existence of these different kinds of black holes and the respective astronomical phenomena associated with them always brings far - reaching revelation to our understanding of the evolution of stars, galaxies and at last the whole universe
更重要的是，這些不同類型的黑洞的存在和與它們相關的天文現象，往往為人類了解恆星星系以至整個宇宙的演化，帶來了深遠的啟示。
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