Articles tagged with Local Group
A new project, GP4Streets, provides tailored 'greening prescriptions' for UK streets to adapt to local climate challenges. Communities will be equipped with monitoring tools and DIY greening kits to improve air quality, temperature, and biodiversity.
A team of astronomers has obtained detailed images of a small galaxy and its surroundings, revealing features typically associated with larger galaxies. The study found that the mechanisms fueling galaxy growth may be more universal than previously thought, suggesting that even dwarf galaxies can build stellar halos through accretion.
Astronomers have proposed a new method for measuring the distances of galaxies, utilizing double-period RR Lyrae (RR Lyr) stars. The study, published in Nature Astronomy, aims to improve the accuracy of distance measurements by leveraging the unique properties of these stars.
Erik Herron's project aims to create a more perfect union by fostering open discussions about election integrity and values. Through public events and online resources, Herron encourages community groups to prioritize security, efficiency, and access in their elections.
Researchers used the Panchromatic Hubble Andromeda Treasury Triangulum Extended Region — or PHATTER — survey to study the Triangulum galaxy. The team discovered two drastically different structures depending on the age of the stars, with younger and older stars having distinct distributions.
A team of researchers has discovered three ultra-faint dwarf galaxies around a Milky Way-mass galaxy, providing insights into the formation and evolution of these enigmatic objects. The findings may help develop universal models for how the universe's oldest galaxies formed.
Astronomers using the VLA discovered that fast-moving cosmic ray electrons drive winds in the neighboring galaxy M33, slowing down new star formation. This finding challenges previous theories, suggesting cosmic rays are a more general cause of galactic winds.
A Rutgers study found community-based groups more effective than health-care organizations in raising awareness of at-home testing availability and increasing its completion rates. The research suggests that partnerships between CBOs and HCOs are crucial to strengthen health outcomes.
Astronomers have discovered a massive galaxy protocluster, believed to be a 'galaxy shipyard', in the distant universe. The discovery provides insights into galaxy cluster formation and sheds light on the process of galaxies forming into clusters.
A team of astronomers has made detailed observations of a large tidal flow around the Sombrero galaxy, revealing its strange morphology and shedding light on its possible merger history. The study's findings suggest that the galaxy's unusual shape may be due to cannibalism by a satellite dwarf galaxy.
Using numerical simulations, researchers showed that satellite galaxies can retain gas and experience new episodes of star formation after passing close to their parent galaxy. This process is driven by the satellite's reserve of cold gas and minimum distance from its parent galaxy.
Researchers have created a new map of dark matter in the local universe using machine learning, revealing previously undiscovered filamentary structures connecting galaxies. The map provides a detailed understanding of the distribution of dark matter and its gravitational influence on galaxies.
A new study led by IAC researchers using the OSIRIS instrument on GRANTECAN has discovered the most densely populated galaxy cluster in formation in the primitive universe. The cluster, located 12.5 billion light years from us, is made up of galaxies with normal star formation rates and is predicted to evolve into a Virgo-like cluster.
IC 10 is the closest-known starburst galaxy, with ample supplies of cool hydrogen gas fueling its furious star formation. The faint object, located 2.2 million light-years from Earth, remains difficult to study due to cosmic dust and stars blocking our view.
Researchers at the University of Michigan have found a massive galaxy, M32p, in Andromeda's outer stellar halo, shedding light on the evolution and survival of disk galaxies. This discovery helps explain the formation of Andromeda's enigmatic M32 satellite galaxy.
The Hubble Space Telescope has discovered a rare relic galaxy, NGC 1277, that remains unchanged for the past 10 billion years. This unique find provides valuable insights into the origin and evolution of galaxies billions of years ago.
Researchers have discovered that the Milky Way and Andromeda galaxies are roughly the same size, with Andromeda being 800 billion times heavier than the Sun. This finding challenges previous estimates of dark matter in the Andromeda galaxy and suggests that scientists may need to revise their understanding of the local group.
An international team of astronomers has discovered a galactic arrangement where dwarf satellite galaxies orbit the main body in a narrow disk around Centaurus A. This finding contradicts commonly used cosmological models and simulations.
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.
A third of Clinical Commissioning Groups (CCGs) in England are using private companies to screen patient referrals from GPs to specialist services. While some schemes aim to reduce costs, others improve referral quality. However, most CCGs lack evidence on whether their schemes have saved money overall.
Astronomers using the Subaru Telescope's Hyper Suprime-Cam camera observed deep, super-wide-field images of the galaxies and their populations of young stars. The team discovered that the spatial distribution of young stars around these galaxies follows closely that of their distribution of neutral hydrogen.
A team of astronomers has found that galactic 'rain' may be the key to understanding why some galaxies are more productive at creating stars than others. The researchers analyzed X-rays from over 200 galaxy clusters using NASA's Chandra X-ray Observatory and discovered that massive black holes can slow down gas that helps form stars.
The Milky Way galaxy is part of a new, massive galactic supercluster called Laniakea, which spans 500 million light-years and contains 100,000 galaxies. The discovery clarifies the boundaries of our local Universe and provides new insights into the motion of galaxies.
The researchers mapped the velocities of galaxies throughout our local universe to define the region where each supercluster dominates. The Milky Way resides in the outskirts of the Laniakea Supercluster, which is 500 million light-years in diameter and contains 100,000 galaxies.
Scientists have precisely measured the mass of the Milky Way for the first time, finding it to be approximately half the weight of Andromeda. The study, led by the University of Edinburgh, used data on galaxy distances and velocities to calculate the total masses of both galaxies.
An international team of researchers devises precise method for calculating galaxy masses using gravity and expansion data. The new study shows the Milky Way has only half the mass of its neighbor Andromeda.
New supercomputer simulations show that most dark matter halos failed to form galaxies, with gas sterilized by the heat from first stars. The research improves understanding of dark matter, a mysterious substance believed to make up 85% of the universe's mass.
A new study questions the accepted model of galaxy formation, suggesting that dwarf galaxies may have formed from another galaxy through a tidal interaction. The research criticizes three recent papers that found satellite galaxies to support the standard model, instead finding 'serious issues' with their methods.
Astronomer Marshall McCall reveals the Milky Way and Andromeda are part of a larger 'Council of Giants', with 12 large galaxies arranged in a ring. The arrangement may have helped build the disks of these galaxies through gas flow.
The NASA/ESA Hubble Space Telescope has observed the remains of a star that exploded as a supernova around 600 years ago. The wispy gas structure, known as SNR B0519-69.0, is located in the Large Magellanic Cloud and features a striking blood-red color.
Recent studies with the Green Bank Telescope indicate that two neighbor galaxies may have had a close encounter. The discovery confirms a disputed finding from 2004 and shows six dense clumps of gas in the stream, strengthening the argument that they are part of a bridge between the two galaxies.
The Hubble Space Telescope has created the sharpest visible-light image ever made of the nucleus of an external galaxy, the Andromeda galaxy. The blue stars surrounding the massive black hole are just 200 million years old and formed in a burst of star formation near the black hole.
Astronomers, including Queen's University physicist Larry Widrow, have discovered a nearby cosmic encounter between the Andromeda and Triangulum galaxies, which collided about two to three billion years ago. The collision caused millions of stars to be ripped from the Triangulum disk, forming a faint stream visible in the PAndAS data.
Astronomers have discovered a mechanism for the formation of dwarf spheroidal galaxies, which are thought to be composed mostly of dark matter. The 'cosmic dance' of gravitational interactions between galaxies may trigger the removal of stars from smaller dwarf galaxies, transforming them into the observed dwarfs.
The Carnegie Hubble Program aims to decrease the uncertainty of the Hubble constant from 10% to 3% by refining distances to galaxies using Cepheid variable stars and Spitzer telescope observations. The team will observe 700 hours of nearby galaxies, correcting for lingering uncertainties and systematic errors.
The Milky Way galaxy is rotating about 100,000 miles per hour faster than previously understood, increasing its mass by 50 percent. This increase in speed and mass brings the Milky Way closer to colliding with the Andromeda Galaxy or smaller nearby galaxies.
The galaxy proto-cluster LBG-2377 is the farthest ever detected, offering a glimpse into the universe's infancy when its light was emitted. Scientists believe it may grow into a massive galaxy cluster, born from a catastrophic event with gas and matter collapsing.
The Triangulum Galaxy, located 2.9 million light-years from Earth, is ablaze with starbirth, according to a new image taken by NASA's Swift satellite. The image showcases the galaxy's high spatial resolution, revealing young, hot stars and star-forming gas clouds in unprecedented detail.
A team of researchers has discovered a web-like system of gas clouds containing the missing baryons, which are thought to make up half of the universe's mass. The clouds, detected using X-ray telescope data, have temperatures of around 1 million degrees Celsius and are spread over vast distances.
Researchers have discovered a mechanism by which the galaxy is seeded with gas to form new stars, solving a long-standing question of galactic evolution. The discovery confirms that high-velocity clouds play a key role in the chemical evolution of the galaxy by showering it with metal-poor gas.