Articles tagged with Peculiar Galaxies
The Sloan Digital Sky Survey has released its 20th data set, featuring over three million spectra of stars and galaxies, as well as 18 new value-added catalogs. This release marks a significant expansion of the survey's efforts, integrating full all-sky panoptic spectroscopy across both hemispheres.
A team at the University of Arizona discovered exceptionally fast and powerful galactic winds from quasars a billion years after the Big Bang. These winds could have caused galaxies to lose gas supplies, effectively shutting down star formation. The study suggests that quasars with extreme outflows were more common in the early univers...
Astronomers using the James Webb Space Telescope discovered a galaxy that is not rotating, contradicting current theories about galaxy formation. The team believes this galaxy may have been formed after a single collision between two galaxies, making it a rare and unexpected finding.
Researchers used the James Webb Space Telescope to study young galaxies in the early universe, finding most were turbulent and 'clumpy'. Despite this chaos, galaxy dynamics show a gradual transition towards ordered structures, suggesting that galaxies like our Milky Way formed through frequent mergers and bursts of star formation.
A new study by Dartmouth astronomers has mapped 355 candidate satellite galaxies around dwarf galaxies, tripling the number previously surveyed. The researchers aim to understand how external conditions influence satellite formation and uncover insights into dark matter's nature.
Researchers found a core-collapsing self-interacting dark matter subhalo is responsible for the peculiar spur and gap features observed in the GD-1 stellar stream. This discovery provides insights into the nature of dark matter itself and offers a new explanation for the observed perturbations.
Scientists have discovered birth sites of gigantic elliptical galaxies, suggesting large gas flows and galaxy collisions created these ancient systems. The research, published in Nature, may finally unravel the enigma of how these giant galaxies formed.
Researchers discovered a class of unusually large and red galaxies, called Ultra-red Flattened Objects (UFOs), near the limit of Hubble's observable range. The James Webb Space Telescope's infrared capabilities allowed them to spot these 'dustier cousins' of the Milky Way.
Researchers from DTU have discovered a neutron star that rotates at an astonishing 716 times per second, making it one of the fastest-spinning objects ever observed. The neutron star is part of an X-ray binary star system and is located in the Sagittarius constellation.
UNLV astrophysicists found evidence suggesting the supermassive black hole at the center of our Milky Way galaxy, Sgr A*, is likely the result of a past cosmic merger. The study utilized data from the Event Horizon Telescope's 2022 observation of Sgr A* to investigate various growth models and demonstrated that the misaligned spin prop...
A new study published in the Astrophysical Journal has found that galaxies in denser environments are up to 25% larger than isolated galaxies. Researchers used a machine learning tool to analyze millions of galaxies and found a clear trend: galaxies with more neighbors are also on average larger.
Astronomers used James Webb Space Telescope to discover that Milky Way-like galaxies are surprisingly common and dominated throughout the universe's history. These 'disk' galaxies formed 10 billion years ago or longer and were previously thought to be fragile in early Universe.
Astronomers have discovered a galaxy with a unique activity in its core, leading to a reclassification as a giant radio galaxy. The PBC J2333.9-2343 galaxy has a blazar at its center with jets that changed direction drastically by up to 90 degrees.
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.
Astronomers studied 37 nearby galaxies using Hubble Space Telescope images in ultraviolet light, finding that faraway galaxies may not be inherently odd-shaped. The survey suggests that astronomers are detecting the 'tip of the iceberg' of very distant galaxies, and that their shapes may be influenced by incomplete observations.