By comparing the physical parameters of cluster and field galaxies,such as concentration index,specific star formation rate,stellar mass,and metallicity,the star formation properties of galaxies within different gravitational environments are studied.
通過(guò)對(duì)團(tuán)星系和場(chǎng)星系的聚度參數(shù)、特征恒星形成率、星系中包含的恒星質(zhì)量、金屬豐度等物理參量的比較,研究了處在不同引力環(huán)境中星系的恒星形成性質(zhì)。
The distance to the massive star-forming region W3OH in the Perseus spiral arm of the Milky Way has been measured to be 1.
以地球軌道半徑為基線,借助目前世界上最高分辨率的甚長(zhǎng)基線干涉陣(VLBA),通過(guò)測(cè)量英仙臂中大質(zhì)量恒星形成區(qū)W3OH的三角視差,得到了銀河系中距離太陽(yáng)最近的英仙臂的距離為1。
We briefly describe the theories of the formation of massive stars and related observational evidence.
吸積說(shuō)認(rèn)為,大質(zhì)量星可能與小質(zhì)量星形成于相似的過(guò)程;并合說(shuō)主張大質(zhì)量星可能是由小質(zhì)量年輕星碰撞合并而成。
Stellar Mass Function of Lyman Break Galaxies: Theoretical Perspective;
Lyman Break Galaxies的恒星質(zhì)量函數(shù)的理論預(yù)期
The black hole could then grow even stronger (from the star's mass) as to possibly absorb another.
吸收了恒星質(zhì)量之后，黑洞進(jìn)一步膨大，并有可能吞噬下一顆恒星。
Usually if the star is small in mass, most of the gases will be consumed while some of it escapes.
通常如果恒星質(zhì)量不大，大多數(shù)氣體燃燒消耗，部分氣體則會(huì)逃逸。
High-mass stars emit ultraviolet and blue light, whereas low-mass stars emit yellow and red light.
大質(zhì)量恒星發(fā)出紫外光和藍(lán)光，而小質(zhì)量恒星則發(fā)出黃光與紅光。
The explosion flings out perhaps half the star's mass into space.
爆炸也許把恒星的一半質(zhì)量擲到空間。
Massive stars are hottest in their central regions.
大質(zhì)量恒星的中心區(qū)域溫度最高。
TENDENCY TO CLUSTER IN MASSIVE STAR FORMATION
大質(zhì)量恒星形成時(shí)的成團(tuán)傾向(英)
Black holes are the evolutionary endpoints of stars at least 10 to 15 times as massive as the Sun.
黑洞是恒星演化的終點(diǎn)，這些恒星的質(zhì)量通常有10－15個(gè)太陽(yáng)大
Spectral Line Observations of Massive Star Forming Regions and Circumstellar SiO Maser;
大質(zhì)量恒星形成區(qū)和恒星SiO脈澤的譜線觀測(cè)研究
The diameters of stars, unlike their masses, have an enormous range.
恒星的直徑不同于它們的質(zhì)量，相差很大。
THE EVOLUTIONARY TRACK IN THE H-R DIAGRAM OF MODEL STARS OF 1.2 SOLAR MASS
1.2 太陽(yáng)質(zhì)量的模型恒星在赫-羅圖上的演化程
Influences of the Turbulent Stress on the Structure and Evolution of Intermediate-Mass Stars;
湍流應(yīng)力對(duì)中等質(zhì)量恒星結(jié)構(gòu)與演化的影響
The Influence of Turbulent Stress on Intermediate-Mass Star with Rotation;
湍流應(yīng)力對(duì)中等質(zhì)量轉(zhuǎn)動(dòng)恒星演化的影響
Hot bluish white clusters of massive stars are scattered throughout the galaxy, interspersed with numerous dustier reddish regions of current star formation.
熾熱的藍(lán)白色大質(zhì)量恒星群遍布整個(gè)星系，散布在眾多充滿(mǎn)塵埃略帶紅色的恒星誕生區(qū)中。
A supernova is a violent explosion that happens to the most massive stars.
超新星是指具有超大質(zhì)量的恒星所產(chǎn)生的猛烈的爆炸。
Asteroseismic Tests of Heavy Element Diffusion in Low-mass Stars;
利用星震學(xué)方法探測(cè)小質(zhì)量恒星的重元素?cái)U(kuò)散效應(yīng)
In theory, the first step toward producing a millisecond pulsar is the formation of a neutron star when a massive star goes supernova.
理論上，形成一顆毫秒脈沖星的第一步，是一個(gè)大質(zhì)量恒星在成為超新星而爆發(fā)后留下的中子星。
The embryo inside the protostar is less massive than the envelope; most of the mass is still falling inward.
原恒星內(nèi)部的胚胎的質(zhì)量比包殼小，大部分物質(zhì)一直在朝中心落去。