A Sr-Rich Star on the Main Sequence of Omega Centauridoi:10.1086/510530G. S. Da CostaJohn E. NorrisLaura M. StanfordRussell D. Cannon
A main sequence star has characteristics that place it on an H-R diagram's band, or main sequence. Discover features of a main sequence star and why people may have to leave Earth one day. Why We'll Have to Leave Our Planet Over a billion years from now, the Earth's oceans will ...
A. Its distance from other stars B. Its age C. Its mass D. The amount of dust around it 相关知识点: 试题来源: 解析 C。解析:The size and brightness of a main-sequence star depend on its mass.表明主序星的大小和亮度取决于它的质量。反馈...
The transformation of a main sequence star into a red-giant star in the core-and-shell model.Presents a qualitative explanation on the behavior of the core and shell of a star. Homogeneous systems contained in a star; Maintenance of core and shell stability by a negative heat capacity; ...
The thermalactivity (radiation pressure) stops further gravitational collapse——A main sequence star is born.聚变产生的热/辐射使得物质不能进一步受引力作用塌缩,这时恒星达到了一个相对稳定平衡的状态——main sequencestar(主系星),而恒星会在这个状态待很久很久。我们的太阳也在目前这个最稳定的状态。此刻恒星...
et al. The brightest young star clusters in NGC 5253. Astrophys. J. 811, 75 (2015). Article ADS Google Scholar Sanyal, D., Grassitelli, L., Langer, N. & Bestenlehner, J. M. Massive main-sequence stars evolving at the Eddington limit. Astron. Astrophys. 580, A20 (2015). ...
*He has swapped his hectic rock star's lifestyle for that of a country gentleman.他一改摇滚歌星紧张忙碌的生活方式,开始过起了乡村绅士的生活。(我们可以用swap sth for sth替换replace sth with sth) flounce[flaʊnts]指“衣服、裙子或者窗帘的荷叶边”flouncy是...
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Describe how the mass, luminosity, surface temperature, and radius of main-sequence stars change in value going from the “bottom” to the “top” of the main sequence. One method to measure the diameter of a star is to use an object like the Moon or a planet to block out its light ...
AU Microscopii (AU Mic) is the second closest pre-main-sequence star, at a distance of 9.79 parsecs and with an age of 22 million years1. AU Mic possesses a relatively rare2 and spatially resolved3 edge-on debris disk extending from about 35 to 210 astronomical units from the star4, ...