tldrdaily.news logo
Tag

Galaxy Evolution

All articles tagged with #galaxy evolution

Cosmic predators: active black holes suppress star formation in neighboring galaxies
astronomy7 days ago

Cosmic predators: active black holes suppress star formation in neighboring galaxies

Astronomers using the James Webb Space Telescope found that one of the universe’s brightest quasars appears to quench star formation not only in its host galaxy but also in neighboring galaxies within about a million light-years. The study of quasar J0100+2802 showed reduced ionized oxygen in nearby galaxies, indicating suppressed star birth likely caused by intense radiation and outflows from the active supermassive black hole, suggesting a galactic “ecosystem” where massive black holes influence galaxy evolution beyond their own hosts, especially in the early universe.

via Space|
#astronomy#black-holes#galaxy-evolution
JWST unveils a cosmic jellyfish, offering clues to how galaxies evolved in the early universe
astronomy9 days ago

JWST unveils a cosmic jellyfish, offering clues to how galaxies evolved in the early universe

Using the James Webb Space Telescope, astronomers captured ESO 137-001, a jellyfish galaxy in the COSMOS field, showing trailing gas filaments stripped by ram pressure as it moves through a cluster. The image reveals blue, star-forming knots in the tails and places the system at about 8.5 billion years ago (roughly 5.3 billion years after the Big Bang), suggesting harsh cluster environments were already shaping galaxies earlier than thought; researchers plan further JWST studies to deepen understanding of galactic evolution.

via Space|
#astronomy#eso-137-001#galaxy-evolution
Webb maps the universe’s dark matter across 800,000 galaxies
space22 days ago

Webb maps the universe’s dark matter across 800,000 galaxies

Using the James Webb Space Telescope, astronomers built a detailed map of dark matter by analyzing subtle light distortions (weak gravitational lensing) from roughly 800,000 background galaxies in the COSMOS field. The 255-hour NIRCam observations, with MIRI distance measurements and prior Hubble data, yield the most galaxy-dense dark‑matter map to date—about ten times more galaxies than ground-based surveys and twice as many as the Hubble map—providing new insights into how dark matter shapes galaxy growth and the cosmic web.

via Space|
#cosmos-survey#dark-matter#galaxy-evolution
Gigantic wobbling black-hole jet rewrites galaxy science
space1 month ago

Gigantic wobbling black-hole jet rewrites galaxy science

Astronomers using the Keck Observatory, JWST and the VLA have detected the largest, most extended precessing jet from a supermassive black hole in the disk merger galaxy VV340a, with a jet spanning up to 20,000 light-years and displaying a wobbling, helical structure. The outflow strips gas and suppresses star formation by about 20 solar masses per year, challenging existing ideas about how black holes and their host galaxies co-evolve and suggesting a possible second black hole at VV340a’s center. The findings, published in Science, rely on multi-wavelength data from Keck, JWST, and VLA and signal a new window into galaxy evolution.

via Live Science|
#black-holes#galaxy-evolution#james-webb-space-telescope
A Wobbling Black Hole Jet Could Starve Its Galaxy of New Stars
astronomy1 month ago

A Wobbling Black Hole Jet Could Starve Its Galaxy of New Stars

Astronomers have observed a precessing, high-velocity jet from a supermassive black hole in VV 340a heating and ejecting gas across the galaxy, potentially quenching star formation; the outflow rate is about 19 solar masses per year, and multiwavelength data from JWST, Keck, VLA, and ALMA reveal how such black-hole activity can reshape galactic evolution.

via The Daily Galaxy|
#astronomy#black-hole#galaxy-evolution
Massive Black Hole Reveals Its Hidden Secrets
science1 month ago

Massive Black Hole Reveals Its Hidden Secrets

Using XRISM's high-resolution instruments alongside ESA's XMM-Newton and NASA's NuSTAR, scientists captured unprecedented details of a supermassive black hole in galaxy MCG–6-30-15, confirming relativistic effects near the event horizon, identifying multiple wind zones, and challenging previous models of distant reflection, thus advancing our understanding of black hole physics and galaxy growth.

via Indian Defence Review|
#black-hole#galaxy-evolution#relativistic-reflection
James Webb Telescope Discovers 'Sleeping Beauty' Galaxies in the Early Universe
science6 months ago

James Webb Telescope Discovers 'Sleeping Beauty' Galaxies in the Early Universe

Astronomers using the James Webb Space Telescope discovered over a dozen dormant galaxies in the early universe, challenging previous expectations that young galaxies should be actively forming stars. These galaxies, which paused star formation between 10 and 25 million years ago, suggest a cyclical pattern of starburst and quiescence, possibly driven by stellar feedback processes. The findings, still preliminary, open new avenues for understanding galaxy evolution and the mechanisms that regulate star formation in the early cosmos.

via Space|
#dormant-galaxies#early-universe#galaxy-evolution