Context. Extremely metal-deficient [12 + log(O/H) $\\la$ 7.6] emission-line galaxies in the nearby universe are invaluable laboratories of extragalactic astronomy and observational cosmology since they allow us to study collective star formation and the evolution of galaxies under chemical ...
网络恒星形成星系 网络释义 1. 恒星形成星系 ... ) galaxy formation 星系形成 )star-forming galaxies恒星形成星系) galaxy formation and evolution 星系形成和演化 ... www.dictall.com|基于2个网页
Theory suggests that there are two primary modes of accretion through which dark-matter halos acquire the gas to form and fuel galaxies: hot- and cold-flow accretion. In cold-flow accretion, gas streams along cosmic web filaments to the centre of the halo, allowing for the efficient delivery...
Star-forming galaxies rule gamma-ray sky4 November 2021 Diffuse sky Fermi–LAT’s five-year sky map, indicating the various diffuse components that make up 80% of all photons detected. Credit: NASA The diffuse photon background that fills the universe does not limit itself to the attention-...
【预订】The Nature of Dusty Star-Forming Galaxies 已售少于100 ￥1217点击查看更多配送: 北京至 阳泉市城区 快递: 7.00预售,付款后60天内发货 保障:7天无理由退货查看更多 用户评价 参数信息 图文详情 本店推荐 用户评价 参数信息 ISBN编号 9783319883113 作者 WilliamCowley 出版社名称 Springer Berlin Heidelberg...
Lyman-alpha (Lya) photons that escape the interstellar medium of star-forming galaxies may be resonantly scattered by neutral hydrogen atoms in the circumgalactic and intergalactic media, thereby increasing the angular extent of the galaxy's Lya emission. We present predictions of this extended, low...
A new photometric index based on apparent magnitudes has been obtained to separate red galaxies dominated by old populations from those dominated by star formation. A two-component mass code has been used to estimate the stellar mass and age of the galaxies. The main results are: the two ...
galaxies: high-redshiftgalaxies: photometrygalaxies: starburstinfrared: galaxiesStarting from a sample of 24 \\micron\\ sources in the Extended Groth Strip, weuse 3.6 to 8 \\micron\\ color criteria to select ultraluminous infrared galaxies(ULIRGs) at $z\\sim2$. Spectroscopy from 20-38 \\...
Around 3 billion years after the Big Bang, he said "it really is fireworks" in the young galaxies, with a "peak of star formation and black hole activity." The telescope focused on a wide stretch of the Northern Hemisphere sky, with the equivalent of an exposure time 10 times ...
We present spatially resolved kinematics of 27 ALMA-identified dust-obscured star-forming galaxies (DSFGs) at z ∼ 1.3–2.6, as traced by Hα emission using VLT/KMOS near-infrared integral field spectroscopy from the ‘KMOS-ALMA Observations of Submillimetre Sources’ (KAOSS) Large ...