BEIJING, July 2 (Xinhua) -- Chinese scientists recently proposed that the current dark matter halo of the Milky Way is "slightly oblate." The study, conducted by researchers from the University of the Chinese Academy of Sciences (UCAS), in collaboration with several domestic and international re...
The halo of the Milky Way provides a laboratory to study the properties of the shocked hot gas that is predicted by models of galaxy formation. There is observational evidence of energy injection into the halo from past activity in the nucleus of the Milky Way1,2,3,4; however, the origin...
Two stellar components in the halo of the Milky Way. Daniela Carollo,Timothy C. Beers,Young Sun Lee,Masashi Chiba,John E. Norris,Ronald Wilhelm,Thirupathi Sivarani,Brian Marsteller,Jeffrey A. Munn,Coryn A. L. Bailer-Jones,Paola Re Fiorentin,Donald G. York. Nature . 2007...
We performed an extended analysis of the parameter space for the interaction of the Magellanic System with the Milky Way (MW). The varied parameters cover the phase space parameters,the masses, the structure, and the orientation of both Magellanic Clouds
We present results from our survey of RR Lyrae stars in the halo of the Milky Way. Since these stars are standard candles, the survey is capable of finding spatial structures in the halo, such as streams of debris left by the destruction of small satellites by the tidal forces of the ...
We present a spectroscopic study of a sample of 238 RR Lyrae stars, from the QUEST survey, located in the Galactic halo at distances between 4 and 20 kpc from the Sun. Combining their spatial position and kinematics we were able to identify sub-structures in this part of the halo. Some ...
(Abridged) We recently found that the halo of the Milky Way contains a large reservoir of warm-hot gas that contains a large fraction of the missing baryons from the Galaxy. The average physical properties of this circumgalactic medium (CGM) are determined by combining average absorption and ...
Spiral galaxies are surrounded by large gaseous halos. That the disk of the Milky Way has a hot envelope was first proposed by Spitzer (1956). Spitzer considered such a “Galactic Corona” to explain spectroscopic observations that have been made ear- ...
Astronomers at the University of Michigan's College of Literature, Science, and the Arts (LSA) discovered for the first time that the hot gas in the halo of the Milky Way galaxy is spinning in the same direction and at comparable speed as the galaxy's disk, which contains our stars, pla...
Recent studies using Gaia DR2 have identified a massive merger in the early history of the Milky Way (MW) whose debris is dominated by radial and counterrotating orbits. This event, dubbed the Gaia-Enceladus/Gaia-Sausage (GE/GS), is also hypothesized to have built the majority of the inner...