Andromeda II is, in size, the second-largest dwarf spheroidal galaxy known in the Local Group, with a half-light radius 11 of about 1.2 kpc (second only to Andromeda XIX 12).With a luminosity 9 at ...

New images of a nearby dwarf galaxy have revealed a dense stream of stars in its outer regions, the remains of an even smaller companion galaxy in the process of merging with its host. The host galaxy ...

Galaxies grow by attracting and ingesting smaller galaxies, or by merging with other galaxies of comparable size. Now, a team of astronomers, including Glenn van de Ven from the Max Planck Institute ...

New image captures 'stealth merger' of dwarf galaxies Date: February 8, 2012 Source: University of California - Santa Cruz Summary: New images of a nearby dwarf galaxy have revealed a dense stream ...

These final observations at Subaru in 2011 clearly showed the stealth merger of two dwarf galaxies. Modern cosmological theory posits that large galaxies were built up from smaller ones through an ...

The host galaxy, known as NGC 4449, is the smallest primary galaxy in which a stellar stream from an ongoing merger has been identified and studied in detail. "This is how galaxies grow.

An international team of scientists led by David Martinez-Delgado (Max Planck Institute for Astronomy, Germany) has conducted research that reveals a “stealth merger” of dwarf galaxies, where ...

NGC 2623 in the constellation Cancer the Crab is the product of the merger of two spiral galaxies some 250 million light-years away. ... several globular clusters begin to form a dwarf galaxy.

But the galaxy’s merger-mania continues. Astronomers see evidence that the Milky Way has gobbled up as few as five and perhaps as many as 11 small galaxies in the past few hundred million years.

Elliptical galaxies are thought to be a product of a galaxy merger. When two galaxies of equal mass merge, their stars start to tug on one another with gravity, disrupting the stars' rotation and ...