搜索结果: 1-15 共查到“恒星与银河系 Stars”相关记录95条 . 查询时间(0.09 秒)
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Astronomers find a “cataclysmic” pair of stars with the shortest orbit yet(图)
“灾难性”恒星 恒星 双星系统
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2023/6/9
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Baby stars hatch from stellar eggs near galaxy’s center(图)
Baby stars hatch stellar eggs near galaxy center
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2021/4/9
Astronomers have found stellar eggs containing baby stars around the center of the Milky Way galaxy. To make the discovery, the scientists used NSF's Atacama Large Millimeter/submillimeter Array (ALMA...
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How Newborn Stars Prepare for the Birth of Planets(图)
How Newborn Prepare Birth Planets
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2020/2/28
An international team of astronomers used two of the most powerful radio telescopes in the world to create more than three hundred images of planet-forming disks around very young stars in the Orion C...
Giant Planets Carving Paths around Four Young Stars,ALMA Observations Suggest
Giant Planets Carving Paths Four Young Stars ALMA
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2015/12/22
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found the clearest evidence yet that giant planets have recently formed around four young stars. These new worlds, each p...
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earching for Orphan Stars Amid Starbirth Fireworks(图)
Orphan Stars Starbirth Fireworks
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2015/10/13
A new Gemini Observatory image reveals the remarkable “fireworks” that accompany the birth of stars. The image captures in unprecedented clarity the fascinating structures of a gas jet complex emanati...
Brown Dwarfs,Stars Share Formation Process,New Study Indicates
Brown Dwarfs Stars Share Formation Process
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2015/8/4
Astronomers using the Karl G. Jansky Very Large Array (VLA) have discovered jets of material ejected by still-forming young brown dwarfs. The discovery is the first direct evidence that brown dwarfs, ...
Circumstellar gas and dust emission and mass loss from evolved stars
Orbiting a star Gas Dust emissions Evolution of stars
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2014/12/9
This dissertation presents a study of the circumstellar gas and dust emission and their relation to the mass-loss in evolved stars. Considering the physical process of heating and cooling of the dust,...
Investigation of Herbig Ae /Be stars in the near -infrared with a long baseline interferometer
Long baseline Stars Near infrared interferometry The dust
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2014/12/9
We have conducted the first systematic study of Herbig Ae/Be stars using the technique of long baseline spatial interferometry in the near-infrared, with the objective of characterizing the distributi...
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Big black holes can block new stars(图)
stars Big black holes
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2014/12/1
Massive black holes spewing out radio-frequency-emitting particles at near-light speed can block formation of new stars in aging galaxies, a study has found.
Formation and large-scale confinement of jets emitted by young stars finally elucidated
young stars plane scientists
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2014/10/30
An international team of scientists has succeeded in explaining the formation and propagation over astronomical distances of jetsof matter emitted by young stars—one of the most fascinating mysteries ...
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Mixing in star-forming clouds explains why sibling stars look alike(图)
sibling star-forming clouds
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2014/9/12
The chemical uniformity of stars in the same cluster is the result of turbulent mixing in the clouds of gas where star formation occurs, according to a study by astrophysicists at the University of Ca...
Analyzing sun-like stars that eat Earth-like planets
Analyzing sun-like stars eat Earth-like planets
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2014/6/12
Some Sun-like stars are ‘Earth-eaters.’ During their development they ingest large amounts of the rocky material from which ‘terrestrial’ planets like Earth, Mars and Venus are made.
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Surprising new class of 'hypervelocity stars' discovered escaping the galaxy(图)
hypervelocity stars galaxy
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2014/3/17
Top and side views of the Milky Way galaxy show the location of four of the new class of hypervelocity stars. These are sun-like stars that are moving at speeds of more than a million miles per hour r...
Structure and Cooling of Neutron and Hybrid Stars
Structure Cooling Neutron Hybrid Stars
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2012/2/24
The study of neutron stars is a topic of central interest in the investigation of the properties of strongly compressed hadronic matter. Whereas in heavy-ion collisions the fireball, created in the co...
Vibrational Instability of Metal-Poor Low-Mass Main-Sequence Stars
Vibrational Instability Metal-Poor Low-Mass Main-Sequence Stars
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2012/2/24
We find that low-degree low-order g-modes become unstable in metal-poor low-mass stars due to the $\varepsilon$-mechanism of the pp-chain. Since the outer convection zone of these stars is limited onl...