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It is the closest stellar stream to Earth yet found, and the youngest having formed about 700 million years ago.
The Helmi stream is a stellar stream of the Milky Way galaxy.
The Field of Streams is a patch of sky where several stellar streams are visible and crisscross.
HIP 13044 b, the discovered planet, is the first time that a planetary system has been discovered in a stellar stream of extragalactic origin.
In astronomy, the Arcturus Stream is a stellar stream which includes the nearby bright star Arcturus.
Numerical simulations suggest that stars ripped out from the dwarf would be spread out in a long stellar stream along its path, which were subsequently detected.
Her also shows some gradient of velocities across the galaxy's body and is embedded into a faint stellar stream, which also points towards its ongoing tidal disruption.
Globular clusters (such as Messier 54 and NGC 2419) and stellar streams are located further out in the galactic halo.
This stellar stream was originally proposed in 1995 by Donald Lynden-Bell after analyzing the distribution of globular clusters in the Milky Way.
MilkyWay@Home, a distributed computing project that attempts to generate highly accurate three-dimensional dynamic models of stellar streams in the immediate vicinity of our Milky Way Galaxy.
It has been hypothesized that large velocity dispersions could be explained as tidal dwarfs (virtually unbound stellar streams from dwarf galaxies tidally disrupted in the Milky Way potential).
For example, RAVE is suited to searching for stellar streams, some of which are remnants of dwarf galaxies that merged with the Milky Way during galaxy formation.
A stellar stream is an association of stars orbiting a galaxy that was once a globular cluster or dwarf galaxy that has now been torn apart and stretched out along its orbit by tidal forces.
There is a process of disruption acting on this cluster because of the gravitation of the Milky Way - in fact there are many stars leaving this cluster in the form of a stellar stream.
The Virgo Stellar Stream, also known as Virgo Overdensity, is the proposed name for a stellar stream in the constellation of Virgo which was discovered in 2005.
GaBany was awarded the 2010 American Astronomical Society (AAS) Chambliss Amateur Achievement Award for his work with Dr. David Martínez-Delgado (MPIA) into detection of stellar streams around nearby galaxies.
A search for a stellar stream from the Sagittarius Dwarf Elliptical Galaxy - which is currently merging with the Milky Way - in the vicinity of the sun yielded a null result, which helps constrain the shape of the Milky Way's dark halo.
HIP 13044 is an F-type giant located in the Fornax constellation's Helmi stream, a stellar stream consisting of stars that originated in a dwarf galaxy that collided and merged with the Milky Way between six and nine billion years ago.
In NGC 4216's halo, besides a rich system of globular clusters with a number of them estimated in around 700 (nearly five times more than the Milky Way),two stellar streams that are interpreted as two satellite galaxies being disrupted and absorbed by this galaxy are present.
These families are associated to the Galactic spiral structure, they are short-lived as they disperse in a relatively short timescale and they are progenitors of classical superclusters, moving groups, and stellar streams (de la Fuente Marcos & de la Fuente Marcos 2008).