News tagged with elliptical galaxies

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Energizing the Filaments of NGC 1275

When examining clusters of galaxies, astronomers often find massive elliptical galaxies lurking at the centers. In some of these, long filaments of gas and dust extend outwards from the core. One of the best ...

May 11, 2011
4.2 / 5 (5) 17

Large galaxies stopped growing 7 billion years ago

(PhysOrg.com) -- Galaxies are thought to develop by the gravitational attraction between and merger of smaller 'sub-galaxies', a process that standard cosmological ideas suggest should be ongoing. But new ...

Apr 20, 2011
4.9 / 5 (7) 4 | with audio podcast

Giant ring of black holes

(PhysOrg.com) -- Just in time for Valentine's Day comes a new image of a ring -- not of jewels -- but of black holes.

Feb 09, 2011
4.8 / 5 (43) 22 | with audio podcast

NGC 4696: A cosmic question mark

This picture, taken by Hubble's Advanced Camera for Surveys, is not just a beautiful snapshot of NGC 4696, the largest galaxy in the Centaurus Cluster (galaxy cluster Abell 3526). It is also an illustration ...

Aug 12, 2010
4.1 / 5 (14) 1 | with audio podcast

Fermi maps an active galaxy's 'smokestack plumes'

If our eyes could see radio waves, the nearby galaxy Centaurus A (Cen A) would be one of the biggest and brightest objects in the sky, nearly 20 times the apparent size of a full moon. What we can't see when ...

Apr 01, 2010
5 / 5 (6) 1 | with audio podcast

Bully galaxy rules the neighborhood (w/ Video)

(PhysOrg.com) -- In general, galaxies can be thought of as "social" — hanging out in groups and frequently interacting. However, this recent NASA/ESA Hubble Space Telescope image highlights how some galaxies ...

Mar 04, 2010
4 / 5 (6) 0 | with audio podcast

Watching a Cannibal Galaxy Dine

(PhysOrg.com) -- A new technique using near-infrared images, obtained with ESO’s 3.58-metre New Technology Telescope (NTT), allows astronomers to see through the opaque dust lanes of the giant cannibal galaxy ...

Nov 20, 2009
not rated yet 0 | with audio podcast

NGC 4710 galaxy: Baffling boxy bulge (w/ Video)

(PhysOrg.com) -- Just as many people are surprised to find themselves packing on unexplained weight around the middle, astronomers find the evolution of bulges in the centres of spiral galaxies puzzling. A ...

Nov 18, 2009
4.4 / 5 (14) 0

Giant galaxy Messier 87 finally sized up

The new observations reveal that Messier 87's halo of stars has been cut short, with a diameter of about a million light-years, significantly smaller than expected, despite being about three times the extent ...

May 20, 2009
4.5 / 5 (8) 0