brown dwarves造句

• brown dwarfs can then form directly from ultralow-mass cores
  棕矮星因此能够在超轻云核里形成。
• Proto-brown dwarf
  原褐矮星
• For these reasons, astronomers favor a more starlike formation scenario for brown dwarfs
  因为这些理由，天文学家认为棕矮星的起源，较倾向恒星形成的方式。
• If that happens before the embryo has had time to attain stellar mass, the result is a brown dwarf
  假如这发生在胚胎达到恒星质量之前，结果就是一颗棕矮星。
• We find that disks are in fact ubiquitous around brown dwarfs that are a few million years old
  事实上，我们发现在年龄为数百万年的棕矮星旁，到处可见气盘的存在。
• In short, brown dwarfs are girdled by disks just as often as stars are, and their disk lifetimes are similar
  总而言之，棕矮星被气盘环绕的情况与恒星一样常见，而且它们气盘的寿命都差不多。
• In the turbulence scheme, such binary systems should be nearly as common among brown dwarfs as among stars
  在乱流说的架构下，这种双星系统发生在棕矮星上的机率，应与发生在一般恒星上相当。
• What, then, accounts for brown dwarfs, which tip the scales at merely a few tens of jupiters ( a few hundredths of a solar mass )
  那麽，如何才能解释棕矮星仅有数十颗木星的质量（太阳质量的百分之几）呢？
• The ejection scenario, on the other hand, attributes brown dwarfs to dynamical interactions that can toss an embryo out of the molecular cloud
  另一方面，排斥说将棕矮星归因于将胚胎扔出分子云的动态交互作用。
• If the turbulence scenario is correct, young brown dwarfs, too, should have disks and maybe even planets [ see box on page 45 ]
  假如乱流说是正确的，年轻的棕矮星也应有气盘，甚至拥有行星（参见93页棕矮星也有行星吗？
• Indeed, in a young cluster of a given age, the percentage of brown dwarfs with disks is comparable to the percentage of stars with disks
  在相同年龄的年轻星团里，带有气盘的棕矮星比率，确实与带有气盘的恒星比率相当。
• This mystery of how and why their growth is arrested, before they gather enough mass to ignite as stars, is at the heart of the current debate on brown dwarf genesis
  目前关于棕矮星起源的争论，主要是在它们聚积足够的质量而像恒星般燃烧发光前，这个神秘的因素如何与为何遏止了它们的成长。
• In the turbulence scenario, the sequence of events is the same for stars and brown dwarfs; stars simply come from cores that happen to be larger, and brown dwarfs from cores that happen to be smaller
  在乱流说里，恒星与棕矮星的演化序列完全相同；只不过恒星源自较大的云核，而棕矮星来自较小的云核。
• In the turbulence scenario, the sequence of events is the same for stars and brown dwarfs; stars simply come from cores that happen to be larger, and brown dwarfs from cores that happen to be smaller
  在乱流说里，恒星与棕矮星的演化序列完全相同；只不过恒星源自较大的云核，而棕矮星来自较小的云核。
• The turbulence picture predicts that whatever is true of low-mass stars should also be true of brown dwarfs, whereas the ejection hypothesis predicts that brown dwarfs will lose some of their starlike characteristics in the course of being ejected
  乱流说预期低质量恒星与棕矮星的发生机制并无二致，排斥说则预言棕矮星在被排斥逐出的过程中会丧失某些恒星的特性。
• The turbulence picture predicts that whatever is true of low-mass stars should also be true of brown dwarfs, whereas the ejection hypothesis predicts that brown dwarfs will lose some of their starlike characteristics in the course of being ejected
  乱流说预期低质量恒星与棕矮星的发生机制并无二致，排斥说则预言棕矮星在被排斥逐出的过程中会丧失某些恒星的特性。
• The dark star ? ? named nemesis by astronomers ? ? is thought to be a brown dwarf " that i round the sun in an orbit so large it is measured in light years, the distance light travels in a year, equivalent to about 6, 000 billion miles
  这颗被天文学家叫做复仇女神星的暗星被认为是一颗"褐矮星"，它围绕太阳旋转的轨道大得要用光年计量，光年是光在一年中走过的距离，大约等于6万亿英里。
• The dark star ? ? named nemesis by astronomers ? ? is thought to be a brown dwarf " that spins round the sun in an orbit so large it is measured in light years, the distance light travels in a year, equivalent to about 6, 000 billion miles
  这颗被天文学家叫做复仇女神星的暗星被认为是一颗"褐矮星"，它围绕太阳旋转的轨道大得要用光年计量，光年是光在一年中走过的距离，大约等于6万亿英里。
• Using the largest ground-based telescopes, as well as the spitzer space telescope ( the infrared counterpart to the hubble ), several groups, including ours, have recently shown that brown dwarf disks manifest the same properties
  最近，包括我们在内的许多研究团队，使用地面上几个最大的望远镜与史毕哲太空望远镜（相当于红外波段的哈伯太空望远镜），已经证实了棕矮星的气盘具有这些相同的性质。
• Various astronomers, including us, have now surveyed large numbers of fledgling brown dwarfs in nearby young star-forming regions and clusters ( where stars'ages can be estimated from their color and brightness ), looking for this infrared excess
  现在，包括我们在内的许多天文学家，已经在邻近的年轻恒星形成区域和星团（在那里恒星的年龄可由颜色与亮度来估计）里，检视了大量初生未久的棕矮星，寻找过量的红外光。