Articles tagged with Galactic Clusters
A series of simulations have enabled researchers to probe the heterogeneous structure of the universe by treating galaxy distribution as a collection of points. The study reveals that on large scales, the universe approaches hyperuniformity, while on smaller scales it becomes almost antihyperuniform and strongly inhomogeneous.
Scientists have created a synthetic survey that showcases what can be expected from the Roman Space Telescope’s future observations. The simulation contains 33 million galaxies and 200,000 foreground stars, helping scientists plan observing strategies and test data analysis methods.
The James Webb Space Telescope has enabled the detection of compact structures of star clusters inside galaxies, known as clumps. Researchers have studied the link between clump formation and galaxy growth in distant galaxies, providing new insights into the early stages of galaxy formation.
The Hubble Space Telescope has shed new light on the mystery of intracluster light, finding that these stars have been wandering around for billions of years. The survey suggests that these stars were already homeless in the early stages of the cluster's formation, and current theories cannot explain their origin.
The James Webb Space Telescope has captured infrared images of a population of red spiral galaxies at unprecedented resolution, revealing their morphology in detail. These galaxies are among the farthest known spiral galaxies and suggest that such spiral galaxies existed in large numbers in the early universe.
The James Webb telescope has observed the intracluster light in galaxy clusters with unprecedented detail, revealing insights into galaxy formation and dark matter. The study demonstrates the potential of JWST for analyzing faint structures like ICL, which can help understand cluster dynamics.
A team of astronomers used the James Webb Telescope to identify five ancient globular clusters, potentially containing the first and oldest stars in the universe. The clusters were formed close to the Big Bang, offering insights into star formation and galaxy evolution.
Researchers investigated open star clusters, finding they dissolve faster than predicted by Newton's laws. The team developed a new method to count stars in tidal tails, revealing a significant difference in the number of stars between the front and rear tails.
Researchers have found the oldest visible planetary nebula, a rare celestial jewel, hosted by a 500 million-year-old galactic cluster. The team determined that the PN has a 'kinematic age' of 70,000 years and estimates its progenitor star's mass and residual core's mass.
A new technique has identified previously hidden protoclusters that could reveal new details about galaxy evolution. The ancestors of large galaxy clusters were found to be hiding in plain sight, with some protoclusters harboring unseen galaxies that evolved differently.
The W49 cluster is believed to contain approximately 100 type O stars, the hottest and most massive stars in our galaxy, all less than 1 million years old. This young star cluster is part of a larger birthing process that will eventually lead to globular clusters like those orbiting the Milky Way.
Astronomers use NASA's Chandra X-ray Observatory to study the growth of Perseus A, a supergiant galaxy at the center of a large galaxy cluster. The research reveals that Perseus A has accumulated hundreds of billions of stars by cannibalizing gas and smaller galaxies in the vicinity.
Scientists have imaged the pressure fronts in a colossal cosmic 'weather system' produced by the collision of two giant clusters of galaxies. The data reveals a bright but relatively cool central region embedded in a large cloud of hot gas. This is the first detailed look at the late stages of this merger process.
Researchers from the University of Washington have discovered that Barnard's Galaxy, an irregular dwarf galaxy, is significantly different from the Milky Way. Using images taken by the Hubble Space Telescope, they found three star clusters within NGC 6822 to be of very different ages, with one cluster dating back 15 billion years.
Astronomers have observed five young, massive star clusters in a distant galaxy, offering a glimpse into the earliest stages of stellar nursery development. The discoveries, estimated to be around 500,000 years old, provide valuable insights into how globular clusters form and evolve over billions of years.
Astronomers have discovered large numbers of previously unknown stars in the Virgo Cluster using dying green stars as tools. The findings suggest that at least 22% of Virgo's light is coming from these hidden stars, and could affect estimates of universe mass.
Astronomers have discovered bluer galaxies in nearby clusters, indicating recent star formation and a possible ongoing process. The finding revises the Butcher-Oemler effect, suggesting that some clusters may still be forming new stars.
A team of astronomers led by Eric Neilsen discovered that a large galaxy is stripping star clusters from neighboring galaxies. The study used data from the Hubble Space Telescope to confirm that globular clusters were stripped away by M87, a giant elliptical galaxy.
Researchers have detected unusual light patterns from faint stars in a globular cluster, suggesting catastrophic star interactions. The study's findings reveal that these clusters are regions of intense stellar activity, with stars locked in orbital duets that can prevent core collapse into black holes.
The discovery of EUV emissions in the Coma cluster suggests a large cloud of cooler matter, totaling up to 10 trillion of our Suns, which could help clear up a major problem with these galactic groupings. The findings also hint at the presence of normal baryonic matter instead of dark matter or exotic particles.
Scientists successfully modeled the evolution of a massive X-ray galaxy cluster using CTC's SP, achieving unprecedented complexity and resolution. The simulation explores the collapse of high-density regions in a cube of 256 million light years on a side, incorporating gravity and hydrodynamics.