Now researchers think they've identified a sprouting seed
of a giant elliptical galaxy, churning out new stars just 3 billion years after the Big Bang.
Another target is the supermassive black hole in the center
of the giant elliptical galaxy in M87.
A NASA Hubble Space Telescope (HST) view of a 4,000 light - year long jet of plasma emanating from the bright nucleus
of the giant elliptical galaxy M87.
Not exact matches
This is the first direct observational evidence that at least some
of the earliest so - called «dead»
galaxies — where star formation stopped — somehow evolve from a Milky Way - shaped disk into the
giant elliptical galaxies we see today.
«
Giant galaxies die from the inside out: Star formation shuts down in the centers
of elliptical galaxies first.»
«Red and dead» is the unflattering label astronomers attach to
giant elliptical galaxies full
of aged stars.
The third possibility is that the cold gas fueling the chain
of star formation originates from a high - temperature shock wave created when the two
giant elliptical galaxies crash together.
Some
ellipticals are present in the central part
of the cluster including a
giant elliptical at the center (M87) that has become so large by gobbling up nearby
galaxies that were attracted by its enormous gravity.
The
giant ellipticals (called «cD
galaxies») found close to the centers
of galaxies were formed from the collision and merging
of galaxies.
«Our fluffy objects add to the great diversity
of galaxies that were previously known, from
giant ellipticals that outshine the Milky Way, to ultra compact dwarfs,» said University
of California, Santa Cruz Professor Jean Brodie.
His first original discovery
of a
galaxy, M49, a
giant elliptical member
of the Virgo Cluster, occurred in 1771.
Giant jets
of subatomic particles moving at nearly the speed
of light have been found coming from thousands
of galaxies across the Universe, but always from
elliptical galaxies or
galaxies in the process
of merging — until now.
I don't see how we can say the Milky Way
galaxy will remain «as is» for 800 billlion years when it is going to merge with Andromeda and form a
giant elliptical galaxy in a mere couple
of billion years?
The quasar's element ratios are consistent with chemical evolution models suggesting the fast formation
of high - mass stars within around half a billion years previously, similar to the nitrogen - rich environment
of today's «
Giant Elliptical»
galaxies (Pentericci et al, 2002).
Like dust bunnies that lurk in corners and under beds, surprisingly complex loops and blobs
of cosmic dust lie hidden in the
giant elliptical galaxy NGC 1316.
The research team led by Satoru Iguchi, Associate Professor
of NAOJ, succeeded in observing a very close binary black hole in the center
of 3C66B (a
giant elliptical galaxy within the cluster A347) just before its black hole merger.
The Hubble Space Telescope has imaged the center
of giant Virgo Cluster
elliptical galaxy M60.
Detection
of the spiral's dust in a bi-symmetric structure provides strong evidence
of its position deep inside the
giant elliptical host while the vast amounts
of radio, visual, and x-ray emissions are a result
of the energy released by this continuing galactic merger (or «consumption»
of a satellite
galaxy).
On June 16, 2010, the Hubble Heritage Project released a very detailed, composite image
of the dark lanes
of dust crisscrossing the
giant elliptical galaxy Centaurus A. Taken on July 10, 2010 with the Hubble Space Telescope's Wide Field Camera 3, the panchromatic image
of ultraviolet through near - infrared wavelengths shows new details such as bluish clusters
of young massive stars and reddish gas nebulae undergoing star birth normally obscured by dust.
Astronomers (who uncovered the infrared image
of the embedded spiral using the ISO satellite) believe that the
giant elliptical's gravity has helped the consumed, barred spiral
galaxy to maintain its shape thus far.
Some
of the dust inside Centaurus A maps out what appears to be a barred spiral
galaxy, which has recently merged with its
giant elliptical host and is feeding gas into the host's central hole to produce bi-polar jets that are bright in radio wavelengths (more from APOD and ESA).