Articles tagged with Galaxy Formation
A team of Caltech astronomers has discovered a giant swirling disk of gas 10 billion light-years away, which is actively being fed cool primordial gas tracing back to the Big Bang. The finding provides the strongest observational support yet for the cold-flow model of galaxy formation.
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.
A team of astronomers developed a simulation that produces galaxies with characteristics similar to observed ones, including mass, size, and age. The strong galactic winds in the EAGLE-simulation lead to lighter and younger galaxies with less star formation, mirroring real galaxy observations.
Researchers propose that filaments in the cosmic web played a critical role in the evolution of galaxies in the distant universe. Galaxies residing in these filaments have a higher chance of actively forming stars, with a process known as 'pre-processing' accelerating their evolution.
A team of researchers, led by Tom Broadhurst, has reinterpreted cold dark matter as a Bose-Einstein condensate, proposing that it governs the formation of the universe's structure. The theory predicts galaxies formed relatively late and could explain puzzling cores in dwarf galaxies.
Researchers suggest that dark matter particles scattering with photons and neutrinos could explain the lack of small galaxies around the Milky Way. By tuning this interaction, scientists can learn more about dark matter's physics and its effects on galaxy formation.
Case Western Reserve University astronomers will study the outskirts of spiral galaxy M101 using Hubble Space Telescope data. The research aims to determine how galaxies form over time, with findings that could challenge current understanding of galaxy formation.
Astronomers at Yale University have discovered seven previously unseen dwarf galaxies using a novel telescope that can detect low-surface-brightness objects. The finding suggests the possibility of a new class of galaxies in space, with potential implications for dark matter and galaxy evolution.
Academics from the University of Sheffield have solved a long-standing mystery surrounding galaxy evolution by discovering that supermassive black holes accelerate molecular gas outflows at incredible speeds. This finding deepens our understanding of the future of the Milky Way and its impending collision with Andromeda.
New research opens up possibility that dark matter governs structure across whole universe, resolving puzzles in galaxy cores and formation timing. The theory suggests large stationary waves of dark matter called solitons could explain observed phenomena.
A team of astronomers led by Ivana Damjanov has found a treasure trove of compact, densely packed 'red nugget' galaxies in online archives. These galaxies are abundant in the middle-aged universe, providing new constraints on theoretical models of galaxy formation and evolution.
The AGORA project aims to resolve inconsistencies in supercomputer simulations of galaxy evolution by comparing results from different codes and processes. By applying the principle of reproducibility, researchers hope to identify key physics ingredients that produce realistic galaxies.
The AGORA project aims to resolve issues in galaxy formation simulations by systematically comparing high-resolution codes using a common set of initial conditions and astrophysical assumptions. The comparisons will help researchers determine which simulation results are due to the code platform or underlying theoretical assumptions.
Astronomers at UMass Amherst and UT at Austin identify the most distant galaxy, with a redshift parameter of z = 7.51, indicating it is 700 million years old. The discovery challenges theories on galaxy formation and suggests intense star-forming galaxies may be more common than thought.
Researchers use spectroscopy to confirm distance of newly discovered galaxy, z8-GND-5296, which forms stars at a rate ~300 times that of the Milky Way. The discovery sheds light on the earliest formation of galaxies and provides insights into the evolution of galaxies throughout the universe's age.
Astronomers have created time-lapse movies of a jet of superheated gas emanating from a supermassive black hole at the center of galaxy M87. The research team analyzed Hubble data to study the details of this process in understanding galaxy formation and black hole physics.
Researchers used blazar observations to estimate the extragalactic background light (EBL) by measuring the attenuation of high-energy gamma rays. By applying this methodology to blazars at different distances, they were able to study EBL evolution and characterize its build-up over cosmic time.
Engineers at NASA's Goddard Space Flight Center performed delicate 'eye surgery' to implant the MIRI instrument, weighing 181 pounds, into the ISIM module. The precise operation requires coordination among multiple team members to avoid disturbing the critical science instruments.
Astronomers at CU-Boulder used the Hubble Space Telescope to study a quasar's impact on early universe conditions. The team found that 'sideline quasars' likely teamed up with the bright quasar to heat helium gas, preventing small galaxy formation.
Astronomers using NSF-funded South Pole Telescope and ALMA observatory discover galaxies producing stars at high rates, challenging previous understanding of galaxy formation. The discovery provides valuable data to refine computer models of star and galaxy formation in the early universe.
Rachel Somerville's research focuses on creating computer models that simulate galaxy formation and evolution. Her work helps astronomers understand how galaxies first formed and how they continue to evolve in the contemporary universe.
Researchers led by Nicolas Lehner found large quantities of cool gas with low heavy element content surrounding modern galaxies. This gas has not been strongly processed through stars, providing a substantial reservoir for fueling continued star formation in modern galaxies.
Researchers studied 544 blue galaxies and found they gradually transformed into orderly disk-shaped systems, with increasing rotation speeds and organization. The study's findings contradict previous studies that examined only well-behaved galaxies.
Astronomers have discovered galactic winds measuring up to 2,500 km/s, driven by intense bursts of star formation, potentially shutting down galaxy star formation. Young, compact galaxies with high-velocity winds are rare and may be part of a common phase in galaxy evolution.
A team of astronomers has discovered a giant galaxy-packed filament in the universe, containing hundreds of galaxies spanning 8 million light-years. The filament is ablaze with billions of new stars and offers a unique opportunity to explore how galaxies evolve and merge to form superclusters.
Astronomers have gathered direct evidence of a supermassive black hole ripping apart a star that strayed too close. The team identified the victim as a helium-rich star in a galaxy 2.7 billion light-years away, providing insights into the harsh environment around black holes.
Bahram Mobasher has received a two-year grant from NASA to compile imaging observations of galaxy surveys taken by the Hubble Space Telescope since 2002. The project aims to provide multi-wavelength data for measuring physical properties of galaxies and studying their formation and evolution.
Astronomers have discovered that galaxy halos are much larger and more massive than previously thought, with up to 90% of mass undetectable by previous instruments. The new data provides a detailed picture of the chemical structure, movement, and temperature of gases in the halo.
The Bolshoi supercomputer simulation, based on WMAP5 parameters, provides a powerful new tool for studying galaxy formation, dark matter, and dark energy. Initial studies show good agreement between the simulation's predictions and astronomers' observations.
Researchers at University of California, Santa Cruz and Institute for Theoretical Physics in Zurich simulate formation of massive spiral galaxy like Milky Way, resolving key features with high-resolution simulation. The result supports prevailing cold dark matter theory, which predicts galaxies form within dark matter halos.
A gamma-ray burst, GRB 090429B, has been identified as a potential candidate for the most distant object in the universe at an estimated distance of 13.14 billion light years. The burst was detected by NASA's Swift satellite and is believed to be extremely likely, with a 99.3% chance, to be the most distant cosmic explosion.
The Milky Way belongs to a rare subset of galaxies with two satellites as bright and close by as the Large and Small Magellanic Clouds. Researchers analyzed over 20,000 galaxies similar to the Milky Way using the Sloan Digital Sky Survey data.
The Expanded VLA is providing new insights into the formation of sun-like stars, with observations revealing previously unseen detail of molecular gas near a very young star. The telescope's improved quality is also helping researchers study large ejections of matter from massive young stars and their role in galaxy evolution.
Researchers found that just four percent of galaxies are similar to the Milky Way, with two satellites as bright and close by as the Magellanic Clouds. The study used data from the Sloan Digital Sky Survey and computer simulations to understand how the Milky Way fits into the broader context of the universe.
Researchers have discovered a thick stellar disc in the Andromeda galaxy, composed of older stars with distinct chemical and orbital properties. This finding sheds light on the formation and evolution of spiral galaxies like our own Milky Way.
Astronomers Andrey Kravtsov and Nick Gnedin's simulations reveal why galaxies were less efficient at making stars in the early universe. The team's model explains the connection between dust, gas, and star formation, shedding light on the evolution of spiral galaxies.
Researcher Stelios Kazantzidis uses Ohio Supercomputer Center's powerful systems to model galaxy mergers and simulate the formation of massive black holes. His work has potential to shed light on astrophysical phenomena and verify general relativity.
Scientists have found the largest known galaxy cluster at a staggering 7 billion light-years away, holding hundreds of galaxies. This discovery provides crucial insights into dark energy's influence on cosmic structure growth.
A team of astronomers has discovered that young galaxies can grow by sucking in cool streams of hydrogen and helium gas, forming new stars. This process, known as accretion, provides a gentler alternative to galaxy mergers, which are thought to be the primary mechanism for galaxy growth.
Researchers at Durham University use huge computer simulations to recreate the beginnings of the Milky Way, finding that many ancient stars originated from smaller galaxies torn apart by galaxy collisions. The simulations provide a blueprint for galaxy formation and reveal clues to the early history of the Milky Way.
Charles Steidel receives the 2010 Cosmology Prize for his revolutionary studies of distant galaxies, opening a direct observational window to the universe's early age. His work has allowed us to witness the dramatic transformation galaxies undergo throughout their lives.
The Hubble Multi-Cycle Treasury Program will survey the first third of cosmic time, observing over 250,000 distant galaxies to understand galaxy formation and evolution. The project aims to study the earliest stages in the formation of supermassive black holes and find distant supernovae important for understanding dark energy.
Researchers at Durham University have discovered a massive explosion that halted star birth in an early galaxy. The blasts scattered gas needed for new stars, regulating the galaxy's growth.
Researchers from Queen's University are making progress in detecting dark matter using the Cryogenic Dark Matter Search experiment. The team, led by Professor Wolfgang Rau, has observed two events with characteristics of an interaction involving a dark matter particle, but further analysis is needed to confirm the results.
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.
Astronomers using Hubble Ultra Deep Field have discovered the most distant galaxies in the universe, dating back 13 billion years. The findings provide key insights into the formation of galaxies and the early universe.
The MIRI detectors will enable the Webb telescope to observe the earliest stars and galaxies in the universe, allowing scientists to study the formation and evolution of the cosmos. The new video showcases the technology behind MIRI and its potential for groundbreaking discoveries.
A new study led by CU-Boulder suggests that the first large black holes in the universe formed and grew inside gigantic, starlike cocoons. These cocoons likely prevented surrounding gases from being blown away and smothered powerful x-ray radiation.
Katherine Rhode's five-year NSF CAREER award will fund a wide-field imaging survey of globular cluster systems in giant galaxies up to 65 million light years away. The goal is to quantify properties and test theories on galaxy formation.
A team of astronomers has developed a new technique to discover supernovae at greater distances than previously known. This discovery allows for the examination of galaxies that form following supernova explosions, providing valuable information about their evolution.
A team of astronomers has found a sample of massive galaxies with properties suggesting they may have formed recently, running counter to widely-held beliefs. The discovery challenges our understanding of galaxy formation and evolution, offering new opportunities for research into the origin and early history of galaxies.
Astronomers have discovered star birth within a cloud of primordial gas, known as the Leo Ring, which lacks dark matter and heavy elements. This finding suggests that new galaxies may have formed through a distinct process, potentially providing insight into the early Universe.
Astronomers have identified a new type of dwarf galaxy, formed out of pristine gas without dark matter. Led by Johns Hopkins University, the discovery was made using the Galaxy Evolution Explorer and suggests that these galaxies may be common throughout the early universe.
Sandra Faber is being honored for her extraordinary advances in understanding the properties of distant galaxies, dark matter, large-scale structure, and black holes. Her innovative leadership has driven significant discoveries in modern cosmology, including the role of dark matter in galaxy formation.
Researchers harness supercomputing to recreate how galaxies form, develop, and collapse. The most detailed recreation of the universe's evolution to date is created using computer simulations that incorporate black hole physics.
In a groundbreaking study, scientists have discovered that stars were forming at an incredible rate in the core region of an infant galaxy. With a diameter of just 4000 light-years, the star-forming core of J1148+5251 is incredibly productive and reaches its physical limit.
SkyView's latest survey is now available in WorldWide Telescope, with visitors generating 300,000 images a month, up from 20,000 ten years ago. The project provides a single interface for accessing over 36 surveys covering nearly 100 wavelength bands, making astronomy accessible to everyone.
Astronomers have discovered a rare event in the life of a distant quasar, marking the first time a huge flow of gas has been seen coming from one. This observation sheds light on how quasars come into being and may hold clues to galaxy formation.
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.
A team of Caltech astronomers reveals that spiral galaxies have more bars than previously thought, with most forming in smaller, low-mass galaxies. The study suggests that bars play a crucial role in galaxy evolution, fueling new star formation and feeding massive black holes.