Articles tagged with Elliptical Galaxies
Researchers found nearly 200 compact elliptical galaxies, including 11 isolated ones, which were formed when a massive galaxy stripped away the core of a smaller one. These galaxies can escape their host clusters due to gravitational perturbations, helping them survive for about a billion years.
Astronomers observed 22 massive elliptical galaxies using the VLT and Hubble Space Telescope, revealing that star formation in their centers stopped around three billion years ago. The newly discovered inside-out nature of this shutdown may be due to a galaxy's central supermassive black hole or lack of fresh gas.
A study by University of Maryland scientists has found a functional link between supermassive black holes and molecular outflows in galaxies. The research suggests that the black holes' winds are powerful enough to drive these massive outflows, which remove star-making gas and shape the galaxy's fate.
Astronomers spotted a distant supernova split into four images due to the gravity of a massive elliptical galaxy embedded in a cluster. The unique observation will help refine dark matter estimates and study the mass of the lensing galaxy and cluster.
Astronomers spot four images of a distant supernova in a massive galaxy cluster, bending light due to gravitational lensing. The discovery provides insights into dark matter's distribution and helps refine estimates of its amount.
A team of astronomers has discovered a rare type of galaxy, named J1649+2635, that has prominent 'jets' of subatomic particles propelled outward from its core at nearly the speed of light. The unusual feature is unexpected in spiral galaxies.
Researchers at Johns Hopkins University found that massive black holes can block the formation of new stars in mature galaxies. The study suggests that these jets of radio-frequency feedback streaming from central black holes prevent hot gas from cooling and collapsing into baby stars.
Astronomers have discovered a compact galactic core, nicknamed Sparky, which is seen as it appeared 11 billion years ago. The infant galaxy contains twice as much mass as the Milky Way and is producing 300 stars per year, a rate three times faster than our galaxy.
Astronomers have observed the earliest stages of massive galaxy construction, dubbed 'Sparky', which contains about twice as many stars as our Milky Way. The discovery was made possible through combined observations from NASA's Hubble and Spitzer space telescopes.
Astronomers have discovered the most distant galaxy that acts as a cosmic magnifying glass, with a massive elliptical galaxy weighing 180 billion times more than our sun. The lensing effect offers insight into how young galaxies build themselves up into today's massive dark-matter-dominated galaxies.
Astronomers have spotted an unusual structure in the universe, resembling a corkscrew-shaped string of pearls, that winds around the cores of two colliding galaxies. The discovery has sparked excitement among researchers, who are still trying to understand the physical processes behind this phenomenon.
A team of astronomers from RIT helped analyze data showing two elliptical galaxies coalescing in a dense galaxy cluster. The study reveals rare insights into elliptical galaxy mergers and finds a string-of-pearl star formation structure with 19 young blue clusters.
The Illustris simulation recreates the evolution of the universe with unprecedented resolution, including spiral galaxies, elliptical galaxies, and large-scale structures. It also accurately models chemistries of individual galaxies, offering a realistic view of cosmic evolution.
Researchers found a runaway star cluster named HVGC-1 in the M87 galaxy, moving at over two million miles per hour. The cluster was likely flung out of the galaxy by supermassive black holes at its core.
The spiral galaxy ESO 137-001 is zooming through the Norma cluster at nearly 4.5 million miles per hour, stripping gas from its home and forming new stars in intergalactic space. Astronomers hope that studying this galaxy can help them understand how galaxies form stars and evolve over time.
A team of astronomers has discovered four new galaxy clusters, each containing thousands of individual galaxies, some 10 billion light years away. The clusters are seen as they existed 3 billion years ago, providing insights into the formation of giant elliptical galaxies.
Scientists discovered that massive galaxies in the early universe were formed by explosive star formation triggered by galaxy collisions. This theory contradicts the traditional view that galaxies grew larger over time through constant star formation and mergers.
A team of scientists led by UC Riverside astronomers used Hubble to discover 58 young, diminutive galaxies in ultraviolet light, which are 100 times more numerous and 100 times fainter than detected galaxies. These 'unseen' galaxies formed most new stars during the universe's early years.
Astronomers have found the most crowded galaxy in our part of the universe, M60-UCD1, packed with an extraordinary number of stars. The ultra-compact dwarf galaxy is estimated to be about 10 billion years old and has a density of stars about 15,000 times greater than Earth's neighborhood.
Researchers have discovered large arms of hot gas in the Coma galaxy cluster, which are estimated to be around 300 million years old. The smooth shape of these arms suggests a calm setting for the hot gas in Coma, contrary to theoretical models that expect strong turbulence.
New research reveals that 'red nugget' galaxies, previously thought to be extinct, were actually hidden within previous survey data. These compact galaxies may represent a missing link between distant 'red nuggets' and nearby elliptical galaxies.
Astronomers use Hubble to study distant galaxies 11 billion years ago, confirming the Hubble Sequence holds true as far back as 8 billion years. The study finds that all galaxies fit into different classifications of the sequence, with blue star-forming galaxies and massive red galaxies dominating at these early times.
The University of Colorado Boulder has joined the Sloan Digital Sky Survey-IV to study the structure and evolution of the universe. The survey will use powerful new instruments to analyze data from galaxies and quasars, shedding light on dark energy and the formation of our galaxy.
The colliding galaxy duo Arp 142 features a star-forming spiral galaxy NGC 2936 with a compressed gas core triggering new star formation. The elliptical companion NGC 2937 is warped by the encounter, but shows little effect from gravitational pull.
Astronomers discovered a rare galaxy that turns gas into stars with near 100% efficiency, outperforming even the most efficient engines. This highly tuned galaxy forms stars at a rate hundreds of times faster than our Milky Way, with the majority of its starlight emitted by a small region.
Astronomers have captured a striking image of a spiral galaxy distorted by gravitational lensing, resembling an alien from the classic computer game 'Space Invaders'. The foreground cluster of galaxies acts as a natural lens to magnify and brighten light from background galaxies, creating this surreal landscape.
The study uses combined imaging power to unveil spectacular jets of the galaxy, powered by a 2.5-billion-solar-mass central black hole. The jets exhibit unusual ring-like structures and are composed of high-energy plasma beams, subatomic particles, and magnetic fields.
Centaurus A, a well-known elliptical galaxy, has been found to harbor a gassy spiral in its center, defying traditional classifications. The discovery was made possible by the use of the Submillimeter Array radio telescope, which revealed two distinct spiral arms within the galaxy's core.
Astronomers discover that massive galaxies with 100 billion stars are growing denser due to repeated collisions and mergers. The study used gravitational lenses to analyze the mass distribution in these galaxies, finding that major collisions between large galaxies lead to increased mass density at their centers.
Astronomers detected a rotating spiral galaxy in the early universe, over 3 billion years after the Big Bang, using the Hubble Space Telescope. The galaxy, named BX442, is unlike other ancient galaxies with its grand design structure and massive size.
The closest large elliptical galaxy to the Milky Way, Centaurus A has a twisted disc of dust near its centre, formed from a cosmic collision with another galaxy. The galaxy's powerful heart features two massive jets streaming from a massive black hole, emitting strong radio emission and visible in far-infrared images.
The 'sloshing' motion in the hot gas cloud of Abell 2052 helps redistribute heavy elements and limits star formation, while also affecting the growth of the galaxy's supermassive black hole. The Chandra observations provide insights into the complex interactions within the galaxy cluster.
Astronomers using ALMA have found compelling evidence for how star-forming galaxies evolve into 'red and dead' elliptical galaxies, catching a large group of galaxies right in the middle of this change. The study reveals that galaxies are being starved of star-forming gas by their central black holes' jets.
A team of researchers has discovered the most distant developing galaxy cluster, approximately 13.1 billion light-years away, using NASA's Hubble Space Telescope. The cluster is among the brightest galaxies in the early universe and is expected to grow into a massive galactic city.
Astronomers have discovered the most distant galaxy cluster ever observed, comprising five bright galaxies that are 600 million years after the Big Bang. The cluster is believed to be a protocluster, with galaxies expected to merge and form a massive central galaxy.
Astronomers have pinpointed the most distant galaxy cluster in the early universe, comprising five tiny galaxies 600 million years after the Big Bang. The discovery confirms theoretical understanding of galaxy cluster formation and provides evidence for the hierarchical model of galaxy assembly.
Researchers have discovered two massive black holes, each with a mass equivalent to 10 billion suns, in nearby galaxies. These 'sleeping giants' are thought to be remnants of quasars that powered the early universe.
Astronomers have found two massive black holes, each with a mass of 10 billion suns, in nearby galaxies. These 'sleeping giants' are thought to be remnants of quasars that powered matter into black holes in the early universe.
Astronomers have discovered the largest black holes to date, two monsters with masses equivalent to 10 billion suns threatening to consume anything within a region five times the size of our solar system. These black holes are located in giant elliptical galaxies more than 300 million light years from Earth.
Galaxy collisions may be a key process driving galaxy assembly, rapid star formation, and accretion of gas onto central black holes. New analysis combines Hubble images with supercomputer simulations to estimate merger rates, clearing up discrepant results from previous studies.
Astronomers have discovered a unique spiral galaxy with massive jets, providing insights into the formation of galaxies and clusters in the early universe. The galaxy, dubbed Speca, has been found to exhibit three distinct episodes of jet activity, shedding new light on the processes that shaped these ancient structures.
Researchers have found that galaxies previously thought to be dead and devoid of star formation are actually still producing new stars. Using the Hubble Space Telescope, scientists observed individual young stars and clusters in four galaxies, revealing an average star-formation rate of one sun every 10,000 years.
Detecting raging storms of molecular gas streaming away from galaxies for the first time, Herschel reveals powerful outflows that could halve a galaxy's star-forming capacity within one million years. This discovery offers insights into galactic evolution and negative feedback mechanisms.
Astronomers at Yale University have discovered that small red dwarfs are much more prolific than previously believed, increasing the total number of stars in the universe. The discovery found 20 times more red dwarfs in elliptical galaxies than in the Milky Way, with potential implications for galaxy formation and evolution.
Elliptical galaxies are found to contain five to ten times as many red dwarfs as thought, with implications for galaxy formation and evolution. The discovery could lead to a reevaluation of dark matter in these galaxies.
Astronomers discovered that the first super-massive black holes formed when galaxies collided and merged together, contrary to hierarchical structure formation. These simulations reveal details of the merged galaxies on a scale of less than a light year.
Astronomers at Texas A&M University have discovered that a significant fraction of ancient galaxies in the CLG J02182-05102 cluster are still actively forming stars. The team found that star-forming galaxies are more common in this cluster than in nearby galaxy clusters.
Researchers found that the supermassive black hole at the center of M87 is displaced from its expected position, likely due to a previous merger or the iconic jet's push. This discovery could have significant implications for understanding galaxy formation and evolution.
An international team of astrophysicists has created the most complete atlas of nuclear rings, which are enormous star-forming ring-shaped regions that circle certain galactic nuclei. The catalogue includes 113 such rings in 107 galaxies and provides insights into their properties and relationships with galaxy structure.
Dr Andrew Benson and Dr Nick Devereux's research reveals the evolutionary history of the universe, explaining galaxy shapes and numbers. Their 'Lambda Cold Dark Matter' model suggests that dark matter haloes drive galaxy evolution, with elliptical galaxies resulting from multiple mergers.
The new Hubble image showcases over 12 billion years of cosmic history, from star birth to galaxy assembly. The image combines multiple colors to reveal details about galaxy distances and stellar populations.
Researchers propose a new theory that galaxies formed primarily through cold gas streams, challenging the prevailing view of galactic mergers. Computer simulations suggest these streams led to efficient star formation in massive disks, driving the creation of spiral galaxies.
Researchers have discovered two distant galaxies with massive black holes at their centers, challenging previous assumptions about the formation of these cosmic objects. The study reveals that these colossal black holes were present even 12 billion years ago, when the universe was just 1.7 billion years old.
Astronomers have discovered evidence that high-speed collisions between large elliptical galaxies can prevent new stars from forming. The study found that gravitational interactions can heat up gas, making it difficult for stars to cool and form.
A Yale University astrophysicist has discovered an upper mass limit for black holes, which appear to curb their growth at around 10 billion times the mass of our Sun. This finding has implications for the study of galaxy formation and suggests that black holes may play a key role in regulating star formation.
Astronomers discover triple merger of galaxies, dubbed 'The Bird', with ESO's VLT. The system reveals two massive spiral galaxies and a third irregular galaxy forming stars at high rates.
Astronomers have witnessed the rare sight of four galaxies crashing into each other, kicking up billions of stars and forming a single, massive galaxy. The merger, observed using NASA's Spitzer Space Telescope and WIYN Telescope, provides unprecedented insight into how the most massive galaxies in the universe form.
Astronomers have observed two Type II and Type Ia supernovae exploding in the same galaxy just 16 days apart. The rare event is unlikely to be related to anything unusual about the galaxy.
The AEGIS survey reveals a consistent relation between galaxy mass and star and gas orbital speed over billions of years, constraining galaxy formation theories. The findings suggest fundamental properties of galaxies have changed little over the past 8 billion years.
The AEGIS survey provides a unique combination of deep, intensive observations over a wide area, yielding large samples even of rare types of galaxies. The study reveals a time when galaxies were starting to reach maturity, with high star formation rates and powerful black holes at their centers.