منابع مشابه
Milky Way
7 Globular clusters and Population II stars are fossil remnants of the first major epoch of star formation in the Milky Way. SIM Lite will determine precise distances to selected Pop II objects to define a reliable distance scale, and establish reliable absolute and relative ages. Those ages set a minimum age for the Universe and map the early formation history of the Milky Way. The resultant a...
متن کاملX-Rays from Isolated Black Holes in the Milky Way
Galactic stellar-population-synthesis models, chemical-enrichment models, and longduration Bulge microlensing events indicate about Ntot = 10 − 10 stellar-mass black holes reside in our Galaxy. We study X-ray emission from accretion from the interstellar medium on to isolated black holes. Although isolated black holes may be fewer in number than neutron stars, NNS ∼ 10, their higher masses, 〈M〉...
متن کاملIs the dark matter halo of the Milky Way flattened ?
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, as well as the flattening of the dark matter halo of the MW. The analysis was done by a specially adopted optimization code searching for th...
متن کاملAntimatter in the Milky Way
Observational signatures of existence of antimatter objects in the Galaxy are discussed. We focus on point-like sources of gamma radiation, diffuse galactic gamma ray background and anti-nuclei in cosmic rays.
متن کاملThe Milky Way is just an average spiral 3
It has been thought for many years that the Milky Way is an overly large spiral galaxy. Using Cephied distances to 17 spiral galaxies we calculate the true linear diameters of those galaxies. These diameters are then compared to that of the Milky Way which is found to be, at most, an averagely sized spiral galaxy. When compared to galaxies of approximately the same Hubble type (2 < T < 6) the M...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2013
ISSN: 1365-2966,0035-8711
DOI: 10.1093/mnras/stt784