恆星核合成 的英文怎麼說
中文拼音 [héngxīnghégěchéng]
恆星核合成
英文
stellar nucleosynthesis- 恆 : Ⅰ形容詞1 （永久; 持久） permanent; lasting 2 （平常; 經常） usual; common; constant Ⅱ名詞1 （恆心...
- 星 : 名詞1 （夜晚天空中閃爍發光的天體） star 2 [天文學] （宇宙間能發射光或反射光的天體） heavenly body...
- 核 : 核構詞成分。
- 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
- 成 : Ⅰ動詞1 （完成; 成功） accomplish; succeed 2 （成為; 變為） become; turn into 3 （成全） help comp...
- 恆星 : [天文學] fixed star; star恆星大氣 stellar atmosphere; 恆星導航 star navigation; stellar guidance;...
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5 a star begins to form when nuclear fusion takes place
核聚變（核子融合）發生時，一顆恆星就開始了形成過程。Topics include : planets, planet formation ; stars, the sun, " normal " stars, star formation ; stellar evolution, supernovae, compact objects ( white dwarfs, neutron stars, and black holes ), plusars, binary x - ray sources ; star clusters, globular and open clusters ; interstellar medium, gas, dust, magnetic fields, cosmic rays ; distance ladder ; galaxies, normal and active galaxies, jets ; gravitational lensing ; large scaling structure ; newtonian cosmology, dynamical expansion and thermal history of the universe ; cosmic microwave background radiation ; big - bang nucleosynthesis
課程的主題包含了：行星、行星形成；恆星、太陽、正常的恆星、恆星形成；恆星演化、超新星、緻密天體（白矮星、中子星及黑洞） 、波霎、雙x -射線源；星團、球狀及疏散星團；星際介質、氣體、塵埃、磁場、宇宙射線；距離階梯；星系、正常及活躍星系、噴流；重力透鏡；大尺度結構；牛頓宇宙學、宇宙的動力膨脹及溫度發展歷史；宇宙背景微波輻射；大霹靂核合成。Among the evolution is the chemical evolution of the galaxy showing its exceeding importance. the recognize to the galaxy chemical evolution build up the basement of understanding the whole galaxy evolution. and it can restrict and constrain the evolution and ncleosyhthesis of the stellar
其中銀河系的化學演化在其中更是具有極其重要的地位，對銀河系化學演化的認識是理解整個銀河系演化的基礎，並對恆星演化與核合成理論提供約束。A star is created when huge, gigantic, gas clouds bind together due to attractive forces and form a hot core, combined from all the energy of the two gas clouds
引力作用使巨大的氣雲結合在一起，兩團氣雲所有的能量共同形成一個熱核，這時恆星就誕生了。Streams of stars may be ejected out to form something like antennae and the two galaxies will merge together. some galaxies with multiple nuclei may be the end result of the merging of two galaxies long time ago
大量恆星會隨噴流拋出，而兩個星系最終會結合為一，有些擁有多重星系核的星系，可能便是過去星系碰撞所造成的結果。If the mass of the core after a supernova explosion is more than 1. 4 but less than about 3 solar masses, then electron degenerate pressure is not strong enough to support the star. the star will contract to a size even smaller than the white dwarf. the electrons are squeezed into the nuclei and are combined with the protons to form neutrons
假若在超新星爆發后，剩餘核心質量介乎太陽質量的1 . 4至3倍，那麼核心中的電子簡並壓力便再不足以抵抗強大的引力，恆星會進一步收縮，直至電子亦被擠壓至原子核內，和質子結合成為中子。There are two different ideas about the massive star formation. some investigators suggest that high - mass stars form via dynamical collapse of cloud cores, resulting in disk accretion and molecular outflows, similar to their low - mass counterparts ; some peoples suggest that high - mass stars form by the coalescence of low - to intermediate - mass stars
關于大質量恆星的形成有兩種觀點：一種觀點認為大質量恆星通過雲核的塌縮，然後產生一個吸積盤和外流，即相似於低質量恆星的形成；另一種觀點認為大質量恆星通過中小質量的恆星併合而成。When a star is at the main sequence stage, its interior continuously fuses four hydrogen nuclei i. e. protons into one helium nucleus
在主序星階段，恆星內部不斷把四粒氫原子核即質子融合成一顆氦原子核。分享友人