Sentences with phrase «way outer halo»
What is the Milky Way outer halo made of?
http://technologyalpha.net/ Not exact matches
The only way these outer regions could remain intact was if they were bound together by the gravitational embrace of a much larger halo of invisible material, five to 10 times as massive as the visible galaxy.
Frebel used the Clay Magellan Telescope in the Chilean Andes to search the halo of the Milky Way — its outer reaches, where old stars lurk — and turned up a bright red giant about eight - tenths the mass of our sun, dubbed HE 1523 - 0901, that appeared to meet all the requirements.
Beers says the same method can date not only more stars in the inner halo but also those in the outer halo, which prevails beyond the edge of the Milky Way's stellar disk.
Similar streams of stars — curved, elongated regions with high stellar densities — have been found in the outer halo of our own Milky Way galaxy.
A new NASA Hubble Space Telescope image shows globular cluster NGC 1846, a spherical collection of hundreds of thousands of stars in the outer halo of the Large Magellanic Cloud, a neighboring dwarf galaxy of the Milky Way that can be seen from the southern hemisphere.
Some are found in globular clusters, but most move in a huge cloud around the disk called the galactic halo, which has a luminous inner component defined by globular star clusters and other easily observable stars (with coronae of hot gas possibly expelled by supernovae and of high - velocity neutron stars) and an outer dark - matter component inferred from its gravitational impact on the Milky Way's spiral disk.
However, by studying the rotation curves of the Milky Way and other galaxies, astronomers have concluded that most of the mass lies in the outer portions of the galaxy (like the halo), where there is little light given off from stars or gases.