(Press-News.org) Streams of intergalactic gas, enriched with elements heavier than helium, encircle and spiral into a massive galaxy observed at redshift 2.3, researchers report. The findings provide evidence of enriched gas recycling during galaxy formation in the early Universe. Galaxies form through the accretion of gas from the circumgalactic medium (CGM) and intergalactic medium (IGM), which subsequently condenses into stars. Simulations and observations have shown that cold stream accretion – the accumulation of pristine intergalactic gas that contains almost no elements heavier than helium – provides fuel for the star formation rate of galaxies in the early Universe. However, stellar processes in these early galaxies, such as supernovae, enrich gas within the galaxy with elements heavier than helium, including carbon. Related processes can even eject some of this material back out into the IGM. Theory predicts that the enriched gas could subsequently be recycled, accreting back into galaxies, providing additional fuel to sustain rapid star formation for longer. However, observations of enriched gas feeding high-redshift galaxies are limited. Shiwu Zhang, Zheng Cai, and colleagues use the Keck II and Subaru telescopes to observe gas surrounding a massive galaxy at redshift 2.3. In addition to helium and hydrogen, spectra of this region reveal emission lines of ionized carbon, indicating that the CGM gas surrounding the galaxy has been enriched in elements heavier than helium. Kinematic modelling of the observations suggest that streams of the enriched gas are spiraling toward the massive galaxy. Based on the findings, Zhang, Cai et al. propose that the observed inflowing enriched gas was recycled from an earlier period of star formation and calculate that it could sustain the observed star formation rate of the galaxy.
END
Recycled gas feeds a massive galaxy in the early Universe
Summary author: Walter Beckwith
2023-05-04
ELSE PRESS RELEASES FROM THIS DATE:
Reconstructing Pleistocene bacterial metabolites to revive their natural products
2023-05-04
Reconstructing the bacterial genomes recovered from the calcified plaque of human and Neanderthal remains has offered new insights into previously undescribed Pleistocene bacterial metabolites, researchers report. The approach expands researchers ability to study microbial natural products, which has otherwise been mostly limited to studying living bacteria. Bioactive small molecules produced by microbes, often called natural products, have been an important source of diverse functional compounds for industry and medicine, including many antimicrobials. Characterizing the natural products encoded in biosynthetic gene clusters ...
CRISPR and single-cell sequencing pinpoint causal genetic variants for traits and diseases
2023-05-04
A major challenge in human genetics is understanding which parts of the genome drive specific traits or contribute to disease risk. This challenge is even greater for genetic variants found in the 98% of the genome that does not encode proteins.
A new approach developed by researchers at New York University and the New York Genome Center combines genetic association studies, gene editing, and single-cell sequencing to address these challenges and discover causal variants and genetic mechanisms for ...
University of Southern California launches $1B-plus initiative for computing including AI, advanced computation and quantum computing
2023-05-04
USC President Carol L. Folt on Thursday announced a $1 billion-plus initiative for computing research and education across disciplines, with a focus on AI, machine learning and data science, augmented and virtual reality, robotics, gaming and block chain.
“I want every student who comes through our programs, whether they are in science, business, the humanities or the arts, to have a solid grounding in technology and the ethics of the work that they do,” Folt said. “We will integrate digital literacy across disciplines to create responsible leaders for the workforce of the future.”
Seeded with a $260 million gift from the ...
Teletrix licenses methods for ionizing radiation training using augmented reality
2023-05-04
A method using augmented reality to create accurate visual representations of ionizing radiation, developed at the Department of Energy’s Oak Ridge National Laboratory, has been licensed by Teletrix, a firm that creates advanced simulation tools to train the nation’s radiation control workforce.
Ionizing radiation — which is linked to cancer and other health problems — has enough energy to knock electrons off of atoms or molecules, creating ions. Occupational exposure is a common occurrence for many radiological workers, so any method of decreasing exposure helps ...
$1.4M research pipeline grant funds increased diversity of biomedical sciences workforce
2023-05-04
The National Institutes of Health has renewed a 5-year biomedical sciences research pipeline grant to LSU Health New Orleans. With the $1.4 million Postbaccalaureate Research Education Program (PREP) grant awarded by the National Institute of General Medical Sciences, LSU Health New Orleans will enhance the diversity of the biomedical sciences research workforce.
During a comprehensive one-year research education program, LSU Health New Orleans faculty will prepare individuals from backgrounds underrepresented in the biomedical sciences ...
UTEP awarded numerous grants to support NASA space research
2023-05-04
EL PASO, Texas (May 4, 2023) – Researchers at The University of Texas at El Paso will help build a robotic device for welding in space, prepare astronauts for a mission to the Moon and more, thanks to a slew of new grants from NASA.
The burst of grants awarded to faculty across various departments and colleges highlight UTEP’s strong partnership with NASA and the critical scientific and engineering contributions made by the University for space exploration.
“These joint initiatives between UTEP and NASA strengthen UTEP’s reputation as a premier research institution,” said Stephen Aley, Ph.D., ...
University of Oklahoma professor receives Top Early Career Award for Radar Science
2023-05-04
NORMAN, OKLA. – Justin Metcalf, Ph.D., assistant professor in the School of Electrical and Computer Engineering, Gallogly College of Engineering, and an affiliate faculty in the Advanced Radar Research Center at the University of Oklahoma, has received the 2023 Fred Nathanson Memorial Radar Award from the Aerospace and Electronic Systems Society of the Institute of Electrical and Electronics Engineers for his contributions to radar embedded communications, spectrum sharing, and cognitive radar.
The competitive international award recognizes “individual contributions to the radar community ...
Declines in racial disparities in COVID mortality in 2021 were largely driven by increases in white mortality and changing pandemic geography
2023-05-04
FOR IMMEDIATE RELEASE
Contact:
Jillian McKoy, jpmckoy@bu.edu
Michael Saunders, msaunder@bu.edu
##
Although national COVID mortality disparities declined in 2021, this decrease was largely explained by increases in mortality among White individuals and the shifting geography of the pandemic from urban to rural areas rather than decreases in mortality among non-Hispanic Black and Hispanic individuals.
The racial disparities in COVID-19 deaths became a defining part of the first year of the pandemic in the United States, prompting national efforts to reduce this disproportionate toll among Black and Hispanic communities through vaccination drives and other outreach when ...
Swaddles, hugs > withdrawal drugs
2023-05-04
Hugging and swaddling opioid-exposed newborns can reduce their hospital stays by almost a week, compared to older, drug-based methods, according to new research published by University of New Mexico researchers.
For years, clinicians have known that babies exposed to opioids in the womb were at risk of developing neonatal opioid withdrawal syndrome (NOWS), distressing them to the point of excessive crying, tremors and, in severe cases, even seizures.
Hospitals have used widely different approaches to care and, until now, the understanding of long-term consequences of administering opioid-withdrawal medications to infants has been limited.
“These findings will be ...
Lurie Children’s Hospital first in Illinois to be designated as a Rare Disease Center of Excellence by National Organization for Rare Disorders (NORD)
2023-05-04
Ann & Robert H. Lurie Children’s Hospital of Chicago is the first in Illinois to receive designation as a NORD Rare Disease Center of Excellence, becoming one of 40 U.S. academic medical centers selected to be a part of the first-of-it-kind national network of U.S. medical institutions dedicated to diagnosing, treating, and researching all rare diseases. The network is led by the National Organization for Rare Disorders (NORD) and is designed to foster knowledge sharing between rare disease experts across the country to help meet the unmet needs of more than 25 million ...
LAST 30 PRESS RELEASES:
Jamestown colonists brought donkeys, not just horses, to North America, old bones reveal
FIU cybersecurity researchers develop midflight defense against drone hijacking
Kennesaw State researcher aims to discover how ideas spread in the digital age
Next-generation perovskite solar cells are closer to commercial use
Sleep patterns linked to variation in health, cognition, lifestyle, and brain organization
University of Oklahoma researcher awarded funding to bridge gap between molecular data and tissue architecture
Nationally-recognized pathologist Paul N. Staats, MD, named Chair of Pathology at University of Maryland School of Medicine
The world’s snow leopards are very similar genetically. That doesn’t bode well for their future
Researchers find key to stopping deadly infection
Leafcutter ants have blind spots, just like truck drivers
Tayac receives funding for community engagement project
Parker receives funding for Elementary Education Program Professional Development School (PDS)
Physicists uncork a message in a bottle from another star
Sanders receives funding for project aimed at enabling prostheses for children with lower extremity amputation
Engineers develop solid lubricant to replace toxic materials in farming
Repurposing gemstone polishing waste to create smart cement
Patient-physician messaging by race, ethnicity, insurance type, and preferred language
Unrecognized motor difficulties and developmental coordination disorder in preschool children
Background genetic variants influence clinical features in complex disorders
Smarter battery tech knows whether your EV will make it home
Overactive microRNAs block fat cell development in progeria
Crosswalk confusion: MA drivers flummoxed by pedestrian hybrid beacons, find UMass Amherst researchers
Study shows heart disease mortality disproportionately burdens low-income communities in California
Intracardiac echocardiography recognized as ‘transformative’ imaging modality in new SCAI position statement
Study finds ‘man’s best friend’ slows cellular aging in female veterans
To get representative health data, researchers hand out fitbits
Hiring in high-growth firms: new study explores the timing of organizational changes
Boosting work engagement through a simple smartphone diary
Climate change may create ‘ecological trap’ for species who can’t adapt
Scientists create ChatGPT-like AI model for neuroscience to build one of the most detailed mouse brain maps to date
[Press-News.org] Recycled gas feeds a massive galaxy in the early UniverseSummary author: Walter Beckwith