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Virtual 'UniverseMachine' sheds light on galaxy evolution（图）
Virtual UniverseMachine sheds light galaxy evolution
2019/10/21
How do galaxies such as our Milky Way come into existence? How do they grow and change over time? The science behind galaxy formation has long been a puzzle, but a University of Arizona-led team of sc...
New delta Scuti:Rare pulsating star 7,000 light years away is 1 of only 7 in Milky Way
New delta Scuti pulsating star 7,000 light years 1 of only 7 Milky Way
2017/3/13
The star is one that pulsates and so is characterized by varying brightness over time. It’s situated 7,000 light years away from the Earth in the constellation Pegasus, said astronomer Farley Fer...
The AGN fraction of submm-selected galaxies and contributions to the submm/mm-wave extragalactic background light
galaxies contributions
2014/12/22
We present a comparison of the SCUBA half degree extragalactic survey (SHADES) at 450 μm, 850 μm and 1100 μm with deep guaranteed time 15 μm AKARI FU-HYU survey data and Spitzer guaranteed time data a...
Luke-warm dark matter: Bose-condensation of ultra-light particles
Luke-warm dark matter ultra-light particles
2010/3/18
We discuss the thermal evolution and Bose condensation of ultra-light scalar particles with Compton wavelength of galactic scales. We find an upper bound of 1.5 K for the dark matter temperature from ...
Faint light in clusters of galaxies。
PHENOMENOLOGICAL APPROACH TO THE MODELLING OF ELLIPTICAL GALAXIES: THE PROBLEM OF THE MASS-TO-LIGHT RATIO
galaxies kinematics and dynamics-galaxies elliptical and lenticular-galaxies structure-dark matter-galaxies
2009/2/13
In this paper the problem of the phenomenological modelling of
elliptical galaxies using various available observational data is presented. Recently,
Tortora, Cardona and Piedipalumbo (2007) suggest...