「今日新发现:Dark Nebulae and Star Formation in Taurus」金牛座分子云有几颗明亮的恒星,但真正吸引眼球的是黑暗尘埃.无处不在的尘埃有波浪和涟漪,形成了风景如画的尘埃兔子,但也许更重要的是,它标志着星际气体密度足够高,可以通过引力收缩形成恒星的区域.图像中心是一个由邻近恒星照亮的光云,它不仅是一个著名星...
This process begins just after the formation of the massive star that will power the mature H II region. The star begins producing copious amounts of ultraviolet radiation, converting the surrounding H2 to atomic hydrogen, and then ionizing it to very dense high-pressure H+. The very dense, ...
Interactions, star formation and extended nebulae in SDSS type 2 quasars at ★galaxies: activequasars: emission linesquasars: generaldoi:10.1111/j.1365-2966.2011.19031.xM. Villar‐MartínInstituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía s/n, 18008 Granada, SpainC. ...
The Eagle Nebula is a superb example of the interaction of massive stars with their environment, showcasing both its destructive power and its potential for triggering star formation at the periphery of the remnant molecular cloud. 3 2 The H II Region and the Molecular Cloud Structure ...
Because all the stars in a cluster have very nearly the same age and chemical composition, the differences between the member stars are entirely the result of their different masses. As time progresses after the formation of a cluster, the massive stars, which evolve the fastest, gradually ...
Star birth can take millions of years and create families of stars. Astronomers see examples of star formation in nebulae throughout our own Milky Way Galaxy and in many other galaxies. The most famous and closest stellar nursery to Earth is the Orion Nebula, which lies about 1,500 light-ye...
Nebulae are some of the most beautiful structures to be found in space: vast clouds of dust and gas that are illuminated by light from nearby stars. These regions are often busy sites of star formation, as new stars are born from clumps of dust that collect more material due to gravity....
Define Quadruple star system. Quadruple star system synonyms, Quadruple star system pronunciation, Quadruple star system translation, English dictionary definition of Quadruple star system. n 1. astronomy a group of celestial bodies that are associated a
Star formation in the Magellanic Clouds – IV. Protostars in the vicinity of 30 Doradus From a magnitude-limited infrared survey of the 30 Doradus complex we have identified four candidate protostars. These are associated with dense knots in t... AR Hyland,S Straw,TJ Jones,... - 《Mnras...
One of the remarkable features of molecular clouds is their concentration in thespiral armsin the plane of theMilky Way Galaxy. While there is no definite boundary to the arms, which have irregularities and bifurcations, the nebulae in other spiral galaxies are strung out along these narrow lanes...