Astronomers study properties of debris disk around sun-like star by analyzing light passing through it. The transit allows scientists to infer characteristics of the disk and potentially discover analogues in our Solar System.
Astronomers using the VLA discovered a bright new object near Cygnus A's core, suggesting it could be either a rare supernova explosion or an outburst from a second supermassive black hole. The object's characteristics indicate it may have formed when the galaxy merged with another.
The Hubble Space Telescope has imaged two galaxies in close proximity, each traveling at approximately 2 million kilometers per hour. Their interaction will cause distortions and changes to the structures of both galaxies due to gravitational forces.
The Abell 370 galaxy cluster is a rich mix of various galaxy shapes, including massive elliptical and spiral galaxies. Nearly a hundred distant galaxies have multiple images caused by the lensing effect, with some featuring mysterious-looking arcs of blue light.
The VISTA survey has imaged millions of stars in the Small Magellanic Cloud, revealing surprising results about star formation history and structure. Most SMC stars formed relatively recently, unlike those in larger galaxies.
A team of scientists found a massive wave of hot gas in the Perseus galaxy cluster using Chandra X-ray Observatory data and computer simulations. The wave is thought to have formed billions of years ago after a small galaxy cluster grazed Perseus, causing its gas supply to slosh around an enormous volume.
Researchers at University of Arizona discover diffuse hydrogen gas surrounding Milky Way, accounting for large part of galaxy's baryonic mass. This finding confirms predictions from simulations and provides new insights into the nature of dark matter.
Astronomers study starburst galaxies to understand their evolution. Hubble's observations of NGC 4536 reveal high rates of star formation driven by gas supply, which fuels the creation of colorful ionized hydrogen clouds.
Claude-André Faucher-Giguère, a Northwestern University astrophysicist, has received a Faculty Early Career Development Program award from the National Science Foundation. The $794,304 grant will support improved galaxy formation simulations and interactive visualizations for public outreach.
Researchers have observed and interpreted a cosmic phenomenon resulting from the acceleration of gas clouds by black holes and reacceleration by shock waves. The study reveals the connection between double acceleration and radio emission in galaxy clusters.
Researchers directly observed two Milky Way-like galaxies when the universe was eight percent of its current age, surrounded by massive hydrogen gas halos. The galaxies are forming stars at moderate rates and already rotating, similar to today's giant spiral galaxies.
Researchers detect 75% of a typical galaxy's star formation obscured by dust, revealing surprising findings about the early universe. The Large Millimeter Telescope allows for deeper observations, pushing our knowledge of dust production and metal enrichment over cosmic time.
Researchers found that a nearby galaxy's radiation could trigger the collapse of a host galaxy, allowing a massive black hole to form and grow rapidly. The study provides new insights into the formation of supermassive black holes in the infant universe.
Astronomers have discovered the youngest and most distant galaxy ever seen, containing an abundance of interstellar dust formed by earlier star deaths. This discovery provides new information on when the first supernovae exploded and sheds light on the early Universe.
Astronomers found that stars are ripped apart by supermassive black holes much more often than previously thought, with rates dramatically increasing during galaxy collisions. This new understanding could lead to locating and studying dim black holes in the Milky Way.
Astronomers found that the Galaxy's gravitational field can interfere with determining the coordinates of distant objects, causing a
Astronomers observe a dramatic change in the appearance of supermassive black hole in NGC 2617 galaxy, revealing previously hidden inner regions. Researchers believe rapid gas swallowing and intense radiation may be responsible for the transformation.
The Reference Catalog of Galaxy SEDs (RCSED) contains value-added information about 800,000 galaxies, derived from the elaborated data analysis. The catalog presents properties such as stellar composition, brightness at various wavelengths, and galaxy spectra obtained by the Sloan Digital Sky Survey.
A new study confirms that galaxies are being pushed away from a previously unknown region of low density, called the Dipole Repeller. This region exerts a repelling force on our Local Group of galaxies, suggesting that push and pull forces are equally important.
Astronomers have discovered one of the brightest non-active galaxies in the early universe, BG1429+1202, located 11.4 billion light-years away. The galaxy's high luminosity was made possible by a gravitational lensing effect caused by a massive elliptical galaxy along the line of sight.
The galaxy RX J1140.1+0307 has a supermassive black hole with one of the lowest known masses, yet its emission spectrum cannot be explained by current models. Scientists believe other mechanisms are at play in the interactions between the inner and outer parts of the accretion disk surrounding the black hole.
A team of researchers has localized the source of a Fast Radio Burst (FRB) to an older dwarf galaxy over 3 billion light years away. The galaxy is believed to harbor a supermassive black hole and may be connected to other energetic events such as supernovae and gamma-ray bursts.
Astronomers have discovered a rare Hoag-type galaxy with two circular rings, providing unique insights into galaxy formation and evolution. The galaxy's inner ring is older than its outer ring, suggesting different formation histories for the two components.
The galaxy IRAS 16399-0937 hosts a double nucleus, with the northern nucleus featuring a black hole of massive proportions and a starburst region in the southern part. Hubble's observations reveal the intricate structure of this cosmic megamaser, shedding light on its unique composition and energetic processes.
NASA's Hubble Space Telescope observes the small stellar galaxy NGC 4707, a loose spiral with undefined shape and central bulge, located 22 million light-years from Earth.
A team of astronomers from ANU has found a massive galaxy supercluster near the Milky Way, which influences the motion of our Galaxy. The Vela supercluster is one of the largest concentrations of galaxies in the Universe, and further studies will confirm its size.
Astronomers have discovered a hyper-starburst galaxy that is forming stars at an incredible rate of 4,500 times the mass of the Sun every year. This galaxy, SPT 0346-52, is 12.7 billion light years from Earth and provides valuable insights into the evolution of galaxies and the formation of massive galaxies.
Astronomers detected carbon monoxide gas indicating large quantity of molecular hydrogen, suggesting formation of a single, gigantic galaxy. The cloud of cold gas is estimated to be three times the size of the Milky Way Galaxy.
A team of UCLA astronomers observed a galaxy and found that stars are responsible for producing dust, a key component of rocky planets. The researchers focused on a galaxy with two young clusters of stars and constructed a map tracing the dust in the galaxy.
Astronomers have found an extremely faint dwarf satellite galaxy, Virgo I, located 280,000 light years from the Sun. The discovery suggests hundreds of yet-undetected dwarf satellites in the halo of the Milky Way.
Astronomers have discovered a 'nearly naked' supermassive black hole after a smaller galaxy passed through a larger neighbor, stripping away nearly all its stars and gas. The remnant black hole is now speeding away at over 2,000 miles per second.
Astronomers have detected a 'hot molecular core,' a cocoon of molecules surrounding a newborn massive star, for the first time outside our Galaxy. This discovery reveals significantly different chemical compositions compared to similar objects in our own Galaxy, suggesting potential difficulties in producing large organic species.
Associate professor Chris Packham will use a $387,214 NSF grant to observe local galaxies and understand the nature of their central black holes. The project aims to uncover how these supermassive black holes influence galaxy formation.
Theoretical modeling work resolves debates on dwarf galaxy formation by accurately predicting their properties. The new simulation brings theoretical predictions into better agreement with observations of dwarf galaxies surrounding the Milky Way.
Researchers used colors to identify the ages of over 130,000 stars in the Milky Way's halo, revealing a clear hierarchy with oldest stars at the center and younger ones further away. The study supports a hierarchical model of galaxy formation, suggesting that small mini-halos merged to form the Milky Way.
A team of astronomers charted the rise and fall of galaxies over 90 percent of cosmic history using the FourStar Galaxy Evolution Survey. They discovered young galaxies that existed as early as 12.5 billion years ago, with diverse structures and star formation patterns.
Researchers used advanced instrument MOSFIRE to quantify oxygen in COSMOS-1908, a galaxy 12 billion years old. The measurement provides insights into how matter cycles in and out of galaxies, allowing for better understanding of galaxy evolution and formation.
An international team of astronomers has found a huge region around the centre of the Milky Way devoid of young stars, indicating a lack of star formation. This 'Cepheid desert' stretches for thousands of light years and challenges our understanding of the Galaxy's formation and evolution.
Astronomers have discovered a rare gravitational lensing system dubbed the Eye of Horus, which offers a unique opportunity to probe the fundamental physics of galaxies. The system, consisting of two distinct background galaxies behind a foreground galaxy, provides valuable insights into galaxy interactions and cosmology.
Astronomers have reclassified UGC 1382 as a colossal Giant Low Surface Brightness disk galaxy that rivals Malin 1 in size, with spiral arms visible in ultraviolet light. The galaxy is about 7 times the diameter of the Milky Way and has similar amounts of stars and gas to Malin 1.
A study of around 70,000 galaxies reveals that external mechanisms, such as infalling galaxy drag and gas stripping, are only relevant to quenching galaxies during the last eight billion years. Internal mechanisms, including black holes and stellar outflows, dominate star formation shutdown before this time.
Astronomers discovered a rare cosmic tadpole galaxy, LEDA 36252, with its bright head and elongated tail. The galaxy features surprisingly young stars with a total mass equivalent to 10,000 Suns, indicating a recent burst of star formation triggered by the accretion of primordial gas.
Astronomers discovered that magnetic instabilities in black hole jets determine their fate. Powerful jets can punch through surrounding gas into intergalactic space, while unstable ones fall apart and deposit energy within the galaxy.
Astronomers using ALMA detected a clear signal from oxygen in a galaxy 13.1 billion light-years away, revealing insights into cosmic reionization. The detection of ionized oxygen is crucial for understanding the early Universe and the formation of galaxies.
Researchers found that supermassive black holes at galaxy centers are likely to have weaker gravitational fields, making them harder to detect. This challenges previous assumptions about the detection of gravitational waves from merging galaxies.
Researchers detected gas containing oxygen in a galaxy 13.1 billion light years away, providing insight into ancient times. The discovery helps scientists understand the universe's reionization and the nature of its first stars.
Two volunteer participants in Radio Galaxy Zoo discovered a rare C-shaped galaxy cluster that they pieced together from much smaller images of cosmic radio waves. The team's dataset, with over 1.6 million images classified by 10,000 volunteers, has already reached almost 60% completeness.
A team of astronomers used ALMA to observe a cluster of towering intergalactic gas clouds raining in on the supermassive black hole at the center of an elliptical galaxy. The new findings reshape our understanding of how supermassive black holes feed, revealing a previously unknown process known as cold, chaotic accretion.
A new ALMA observation reveals that cold dense clouds can coalesce from hot intergalactic gas and feed a galaxy's central supermassive black hole. This challenges previous views of how supermassive black holes acquire mass, indicating a chaotic and dynamic feeding process.
Researchers from the University of Birmingham detected resonant acoustic oscillations in 'M4', a 13 billion-year-old star cluster, using data from NASA's Kepler/K2 mission. This breakthrough enables asteroseismology to study the Milky Way's very early history.
An international team of scientists has detected a faint signal emitted by hydrogen gas in a galaxy over five billion light years away. The detection, achieved using the Very Large Array radio telescope, reveals an unusually large amount of hydrogen and provides insights into the history of galaxy evolution.
PhD candidate Gwendolyn Eadie has developed a method to estimate the mass of the Milky Way using globular cluster velocities. This approach predicts the mass contained within any distance from the center of the galaxy, providing new insights into the dark matter component.
Astronomers have discovered a new 'Canarias Einstein ring', a rare and unusual phenomenon that provides insight into the composition of distant galaxies. The discovery was made using data from the Gran Telescopio CANARIAS (GTC) and offers valuable information about the structure of gravitational fields and dark matter in galaxy lenses.
Researchers confirm detection of faintest early-universe galaxy using gravitational lensing, shedding light on the cosmic dark ages. The discovery could help explain how these mysterious periods ended and has implications for our understanding of the universe's evolution.
A team of astronomers has measured the mass of an ultra-diffuse galaxy using the Gran Telescopio CANARIAS, revealing it is composed primarily of dark matter with very few stars. The findings suggest that such galaxies could exist due to a large amount of dark matter protecting them from destruction.
The NASA/ESA Hubble Space Telescope has captured a striking image of the spiral galaxy NGC 6814, showcasing its luminous nucleus and sweeping arms. The galaxy's extremely bright center is believed to host a supermassive black hole with a mass about 18 million times that of the sun.
Astronomers at Indiana University have discovered a small blue galaxy, Leoncino, which contains the lowest level of heavy chemical elements (metals) ever observed in a gravitationally bound system. This finding is exciting as it could help contribute to a quantitative test of the Big Bang theory.
Researchers found that hot dust in the distant universe is often caused by three or four galaxies instead of a single one. This study applied statistical methods to data from the Herschel Space Observatory and dropped the number of stars these galaxies have to be producing by a third.
Researchers use ALMA's high-resolution data to map the rotation of cold molecular gas and dust orbiting a giant elliptical galaxy, determining the massive supermassive black hole at its center has a mass 660 million times greater than the Sun. The precise measurement is among the most accurate for a galaxy's central black hole.
A research team at Stockholm University used NASA's Fermi satellite to study light from the Perseus galaxy cluster, finding no traces of axion-like particles. The observations excluded certain types of ALPs that could explain a small amount of dark matter, advancing sensitivity for future experiments.