搜索结果: 1-14 共查到“银河系结构与运动 Milky Way”相关记录14条 . 查询时间(0.078 秒)
VLBA Measurement Promises Complete Picture of Milky Way（图）
VLBA Measurement Complete Picture Milky Way
2017/10/26
Astronomers using the National Science Foundation’s Very Long Baseline Array (VLBA) have directly measured the distance to a star-forming region on the opposite side of our Milky Way Galaxy from the S...
In a first-of-its-kind analysis, Northwestern University astrophysicists have discovered that, contrary to previously standard lore, up to half of the matter in our Milky Way galaxy may come from dist...
Milky Way-like Galaxies in Early Universe Embedded in 'Super Halos'
Milky Way-like Galaxies Early Universe Embedded Super Halos
2017/3/30
By harnessing the extreme sensitivity of the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have directly observed a pair of Milky Way-like galaxies seen when the universe was only e...
Study of Andromeda's stellar disk indicates more violent history than Milky Way（图）
Andromeda's stellar more violent history Milky Way
2015/1/20
A detailed study of the motions of different stellar populations in the disk of the Andromeda galaxy has found striking differences from our own Milky Way, suggesting a more violent history of mergers...
Dark Matter distribution in the Milky Way: microlensing and dynamical constraints
Dark Matter distribution Milky Way microlensing dynamical constraints
2011/10/20
We show that current microlensing and dynamical observations of the Galaxy allow to set interesting constraints on the Dark Matter local density and profile slope towards the galactic centre. Assuming...
Reddening and metallicity maps of the Milky Way Bulge from VVV and 2MASS. I.The method and minor axis maps
Galaxy: bulge - ISM: dust, extinction - stars: abundances
2011/10/18
We present a method to obtain reddening maps and to trace structure and metallicity gradients of the bulge using data from the recently started ESO public survey Vista Variables in the Via Lactea (VVV...
Segue 3: An Old, Extremely Low luminosity Star Cluster in the Milky Way's Halo
Extremely luminosity Star Cluster Milky Way
2011/10/10
We investigate the kinematic and photometric properties of the Segue 3 Milky Way companion using Keck/DEIMOS spectroscopy and Magellan/IMACS g and r-band imaging. Using maximum likelihood methods to a...
A Model of Habitability Within the Milky Way Galaxy
astrobiology, Galactic evolution, Galactic Habitable Zone, habitability, su- pernovae
2011/9/29
We present a model of the Galactic Habitable Zone (GHZ), described in terms of the spatial and temporal dimensions of the Galaxy that may favour the development of complex life. The Milky Way galaxy i...
In the center of the Milky Way, as well as in many other galaxies, a compact star cluster around a very massive black hole is observed. One of the possible explanations for the formation of such Nucle...
'Best evidence yet' for dark matter comes from Milky Way centre（图）
dark matter Milky Way centre
2010/12/1
Energetic radiation pulsing from the belly of the Milky Way is the clearest signal yet of dark matter. That is according to a pair of astrophysicists in the US who reach this conclusion after scrutini...
Supermassive black hole struggles to swallow Milky Way（图）
Supermassive black hole Milky Way
2010/1/11
Scientists were already aware that the huge black hole at the centre of our galaxy does not consume large amounts of matter, but it could be an even pickier eater than previously thought. That is acco...
An international team of astrophysicists has mapped the borderlands between two of our neighbouring galaxies to reveal an ongoing galactic jostle that will eventually result in the formation of one su...
Sub-structures in the halo of the milky way。
The Milky-Way bulge is studied through calculating the galactocentric
orbits of imaginary bulge stars for initial conditions simulating the bulge.
The author assumes a velocity distribution characte...