搜索结果: 31-45 共查到“理学 the Milky Way”相关记录59条 . 查询时间(0.296 秒)
Distribution of High Mass X-ray Binaries in the Milky Way
Distribution High Mass X-ray Binaries Milky Way
2011/9/27
The INTEGRAL satellite, observing the sky at high energy, has quadrupled the number of supergiant X-ray Binaries known in the Galaxy and has revealed new populations of previously hidden High Mass X-r...
A Census of Baryons and Dark Matter in an Isolated, Milky Way-sized Elliptical Galaxy
Baryons Dark Matter Milky Way-sized Elliptical Galaxy
2011/1/13
We present a study of the dark and luminous matter in the isolated elliptical galaxy NGC720, based on deep X-ray observations made with Chandra and Suzaku. The gas is reliably measured to ~R2500, allo...
Catalogs of Hot White Dwarfs in the Milky Way from GALEX's Ultraviolet Sky Surveys. Constraining Stellar Evolution
Astronomical Data Bases catalogues — stars white dwarfs — stars evolution — Galaxy
2010/11/11
We present comprehensive catalogs of hot star candidates in the Milky Way, se-lected from GALEX far-UV (FUV, 1344-1786°A) and near-UV (NUV, 1771-2831°A)imaging. The FUV and NUV photometry allows us to...
Fundamental Properties of the Highly Ionized Plasmas in the Milky Way
Galaxy disk — ISM Clouds — ISM structure — ultraviolet ISM
2010/11/15
The cooling transition temperature gas in the interstellar medium (ISM), traced by the high ions,Si IV, C IV, N V and O VI, helps to constrain the flow of energy from the hot ISM with T > 106 K to the...
The Elemental Abundance Distributions of Milky Way Satellite Galaxies
Elemental Abundance Distributions Milky Way Satellite Galaxies
2010/11/11
The chemical compositions of the stars in Milky Way (MW)satellite galaxies reveals the history of gas flows and star formation (SF)intensity. This talk presented a Keck/DEIMOS spectroscopic survey of ...
Tidal stirring of Milky Way satellites: a simple picture with the integrated tidal force
stirring of Milky Way satellites simple picture integrated tidal force
2010/11/16
Most of dwarf spheroidal galaxies in the Local Group were probably formed via environmental processes like the tidal interaction with the Milky Way.We study this process via N-body simulations of dwar...
Chemically Peculiar A/F Stars in Open Clusters of the Milky Way
stars: abundances - stars main sequence - stars rotation - diffusion - Galaxy
2010/11/12
Abundance anomalies have been determined at the surface of many field and open cluster A
and F dwarfs. These abundance anomalies are most likely caused by microscopic diffusion at work within the sta...
Quantifying Kinematic Substructure in the Milky Way's Stellar Halo
Cosmology stellar halo galaxies individual(Milky Way) Galaxy halo Galaxy
2010/11/12
We present and analyze the positions, distances, and radial velocities for over 4000 blue horizontal-branch (BHB) stars in the Milky Way's halo, drawn from SDSS DR8. We search for position-velocity su...
'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...
We studied the global distribution and kinematics of the extra-planar neutral gas in the Milky Way.
We present a brief history of Galactic astrophysics, and explain the origin of halo substructure in the Galaxy. We motivate our study of tidal streams by highlighting the tight constraints that analys...
Towards a fully consistent Milky Way disc model - II. The local disc model and SDSS data of the NGP region
Galaxy Astrophysics (astro-ph.GA)
2010/12/31
We have used the self-consistent vertical disc models of the solar neighbourhood presented in Just & Jahreiss (2010), which are based on different star formation histories (SFR) and fit the local kine...
Could the Hercules satellite be a stellar stream in the Milky Way halo?
Galaxy Astrophysics (astro-ph.GA)
2010/12/29
We investigate the possibility that Hercules, a recently discovered Milky Way (MW) satellite, is a stellar stream in the process of formation. This hypothesis is motivated by Hercules' highly elongate...
Stellar Population Variations in the Milky Way's Stellar Halo
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Galaxy Astrophysics (astro-ph.GA)
2010/12/29
If the stellar halos of disk galaxies are built up from the disruption of dwarf galaxies, models predict highly structured variations in the stellar populations within these halos.
Rotation of the Milky Way and the formation of the Magellanic Stream
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
We studied the impact of the revisited values for the LSR circular velocity of the Milky Way (Reid et al. 2004) on the formation of the Magellanic Stream. The LSR circular velocity was varied within i...