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By NASA
This illustration shows a red, early-universe dwarf galaxy that hosts a rapidly feeding black hole at its center. Using data from NASA’s James Webb Space Telescope and Chandra X-ray Observatory, a team of astronomers have discovered this low-mass supermassive black hole at the center of a galaxy just 1.5 billion years after the Big Bang. It is pulling in matter at a phenomenal rate — over 40 times the theoretical limit. While short lived, this black hole’s “feast” could help astronomers explain how supermassive black holes grew so quickly in the early universe.NOIRLab/NSF/AURA/J. da Silva/M. Zamani A rapidly feeding black hole at the center of a dwarf galaxy in the early universe, shown in this artist’s concept, may hold important clues to the evolution of supermassive black holes in general.
Using data from NASA’s James Webb Space Telescope and Chandra X-ray Observatory, a team of astronomers discovered this low-mass supermassive black hole just 1.5 billion years after the big bang. The black hole is pulling in matter at a phenomenal rate — over 40 times the theoretical limit. While short lived, this black hole’s “feast” could help astronomers explain how supermassive black holes grew so quickly in the early universe.
Supermassive black holes exist at the center of most galaxies, and modern telescopes continue to observe them at surprisingly early times in the universe’s evolution. It’s difficult to understand how these black holes were able to grow so big so rapidly. But with the discovery of a low-mass supermassive black hole feasting on material at an extreme rate so soon after the birth of the universe, astronomers now have valuable new insights into the mechanisms of rapidly growing black holes in the early universe.
The black hole, called LID-568, was hidden among thousands of objects in the Chandra X-ray Observatory’s COSMOS legacy survey, a catalog resulting from some 4.6 million Chandra observations. This population of galaxies is very bright in the X-ray light, but invisible in optical and previous near-infrared observations. By following up with Webb, astronomers could use the observatory’s unique infrared sensitivity to detect these faint counterpart emissions, which led to the discovery of the black hole.
The speed and size of these outflows led the team to infer that a substantial fraction of the mass growth of LID-568 may have occurred in a single episode of rapid accretion.
LID-568 appears to be feeding on matter at a rate 40 times its Eddington limit. This limit relates to the maximum amount of light that material surrounding a black hole can emit, as well as how fast it can absorb matter, such that its inward gravitational force and outward pressure generated from the heat of the compressed, infalling matter remain in balance.
These results provide new insights into the formation of supermassive black holes from smaller black hole “seeds,” which current theories suggest arise either from the death of the universe’s first stars (light seeds) or the direct collapse of gas clouds (heavy seeds). Until now, these theories lacked observational confirmation.
The new discovery suggests that “a significant portion of mass growth can occur during a single episode of rapid feeding, regardless of whether the black hole originated from a light or heavy seed,” said International Gemini Observatory/NSF NOIRLab astronomer Hyewon Suh, who led the research team.
A paper describing these results (“A super-Eddington-accreting black hole ~1.5 Gyr after the Big Bang observed with JWST”) appears in the journal Nature Astronomy.
About the Missions
NASA’s Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.
The James Webb Space Telescope is the world’s premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).
Read more from NASA’s Chandra X-ray Observatory.
Learn more about the Chandra X-ray Observatory and its mission here:
https://www.nasa.gov/chandra
https://chandra.si.edu
News Media Contact
Elizabeth Laundau
NASA Headquarters
Washington, DC
202-923-0167
elizabeth.r.landau@nasa.gov
Lane Figueroa
Marshall Space Flight Center, Huntsville, Alabama
256-544-0034
lane.e.figueroa@nasa.gov
View the full article
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA employees plant an Artemis Moon Tree at NASA’s Stennis Space Center on Oct. 29 to celebrate NASA’s successful Artemis I mission as the agency prepares for a return around the Moon with astronauts on Artemis II. NASA/Danny Nowlin A tree-planting ceremony at NASA’s Stennis Space Center on Oct. 29 celebrated NASA’s successful Artemis I mission as the agency prepares for a return around the Moon with astronauts on Artemis II.
“We already have a thriving Moon Tree from the Apollo years onsite,” NASA Stennis Director John Bailey said. “It is exciting to add trees for our new Artemis Generation as it continues the next great era of human space exploration.”
NASA’s Office of STEM Engagement Next Gen STEM Project partnered with U.S. Department of Agriculture (USDA) Forest Service to fly five species of tree seeds aboard the Orion spacecraft during the successful uncrewed Artemis I test flight in 2022 as part of a national STEM Engagement and conservation education initiative.
The Artemis Moon Tree species included sweetgums, loblolly pines, sycamores, Douglas-firs, and giant sequoias. The seeds from the first Artemis mission have been nurtured by the USDA into seedlings to be a source of inspiration for the Artemis Generation.
The Moon Tree education initiative is rooted in the legacy of Apollo 14 Moon Tree seeds flown in lunar orbit over 50 years ago by the late Stuart Roosa, a NASA astronaut and Mississippi Coast resident.
NASA Stennis and the NASA Shared Services Center (NSSC), located at the site, planted companion trees during the Oct. 29 ceremony. Bailey and NSSC Executive Director Anita Harrell participated in a joint planting ceremony attended by a number of employees from each entity.
The American sweetgum trees are the second and third Moon Trees at the south Mississippi site. In 2004, ASTRO CAMP participants planted a sycamore Moon Tree to honor the 35th anniversary of Apollo 11 and the first lunar landing on July 20, 1969.
The road to space for both Apollo 14 and Artemis I went through Mississippi. Until 1970, NASA Stennis test fired first, and second stages of the Saturn V rockets used for Apollo.
NASA Stennis now tests all the RS-25 engines powering Artemis missions to the Moon and beyond. Prior to Artemis I, NASA Stennis tested the SLS (Space Launch System) core stage and its four RS-25 engines.
The Artemis Moon Trees have found new homes in over 150 communities and counting since last spring, and each of the 10 NASA centers also will plant one.
As the tree grows at NASA Stennis, so, too, does anticipation for the first crewed mission with Artemis II. Four astronauts will venture around the Moon on NASA’s path to establishing a long-term presence at the Moon for science and exploration.
The flight will test NASA’s foundational human deep space exploration capabilities – the SLS rocket and Orion spacecraft – for the first time with astronauts.
Explore More NASA Stennis Image Articles View the full article
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By NASA
8 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Artemis I Moon Tree seedlings continue to find new homes with schools, museums, libraries, universities, and community organizations across the contiguous United States. An open call to NASA’s Artifacts Module in Fall, 2023 welcomed over 1000 organization submissions, which were reviewed and ranked by a joint USDA Forest Service and NASA panel.
Final recipient selection and seedling assignments for each cycle are informed by rank and region, and subject to a limited inventory of trees germinated from each of the five species of seeds flown aboard Artemis I in 2022. Recipient selection and seedling distribution follows four cycles: Spring 2024, Fall 2024, Spring 2025, and Fall 2025.
Spring 2024 Artemis I Moon Tree Stewards
Alabama
Fairfield City Schools – Fairfield High Preparatory School Fairfield AL American Sweetgum
Meridianville Middle School Hazel Green AL Loblolly Pine
Pioneer Museum of Alabama Troy AL Loblolly Pine
Troy University Arboretum Troy AL Loblolly Pine
Arkansas
Baxter County Library Mountain Home AR American Sweetgum
Arizona
University of Arizona – Lunar and Planetary Laboratory (LPL) Tucson AZ American Sweetgum
California
Forestr.org Castro Valley CA Sequoia
Girl Scout Troop 7574 Dana Point CA Sequoia
Greenfield Union School District Greenfield CA Sequoia
Quest Science Center Livermore CA Sequoia
Santiago STEAM Magnet Elementary School Lake Forest CA Sequoia
Colorado
United States Air Force Academy USAF Academy CO American Sweetgum
Connecticut
New Milford High School New Milford CT American Sweetgum
South School – New Canaan School District New Canaan CT Sycamore
Yale University Marsh Botanical Garden New Haven CT American Sweetgum
Washington, DC
United States Capitol
Washington, DC DC American Sweetgum
Florida
Agricultural Biotechnology Academy, West Florida High School of Advanced Technology, Escambia County School District Pensacola FL Loblolly Pine
Cornerstone Learning Community Tallahassee FL American Sweetgum
Dreamers Academy Sarasota FL American Sweetgum
Florida Forest Service Tallahassee FL Loblolly Pine
Florida Polytechnic University Lakeland FL American Sweetgum
Gulfside Community Partnership School Holiday FL Loblolly Pine
H.B. Plant High School Tampa FL American Sweetgum
Hobbs Middle School Milton FL American Sweetgum
Lawton Environmental Study Area (LESA), T.W. Lawton Elementary Oviedo FL American Sweetgum
Montverde Academy Montverde FL American Sweetgum
Museum of Archaeology, Paleontology & Science New Port Richey FL American Sweetgum
Museum of Science and Industry Tampa FL American Sweetgum
North Andrews Gardens Elementary Oakland Park FL American Sweetgum
Orange Park Elementary Orange Park FL American Sweetgum
Pine Crest School Fort Lauderdale FL American Sweetgum
Port Malabar Elementary School Palm Bay FL American Sweetgum
St. Peter Catholic School Deland FL Loblolly Pine
UF/IFAS Extension Clay County 4-H Green Cove Springs FL Loblolly Pine
University of West Florida Pensacola FL Loblolly Pine
West Navarre Intermediate School Navarre FL American Sweetgum
Georgia
Berrien Elementary School Nashville GA Loblolly Pine
East Georgia State College Swainsboro GA Loblolly Pine
Lilburn Elementary School Lilburn GA Loblolly Pine
Park Elementary School Hamilton GA Loblolly Pine
Sagamore Hills Elementary School Atlanta GA Loblolly Pine
United States Air Force Moody Air Force Base GA American Sweetgum
Iowa
Cedar Rapids Community School District, Metro High School Cedar Rapids IA Sycamore
Idaho
American Falls High School American Falls ID Sycamore
Illinois
Eagle Pointe Elementary School Plainfield IL Sycamore
Marion Community Unit #2 School District, Marion Junior High School Marion IL Sycamore
Monmouth College Monmouth IL American Sweetgum
Indiana
Franklin Community High School Franklin IN American Sweetgum
Hayes Arboretum Richmond IN American Sweetgum
Kansas
Tecumseh South Elementary School Tecumseh KS American Sweetgum
Kentucky
Christian County Middle School Hopkinsville KY American Sweetgum
FIND Outdoors Gladie Visitor Center, Red River Gorge Stanton KY American Sweetgum
Graves County High School Mayfield KY American Sweetgum
Martha Layne Collins High School Shelbyville KY American Sweetgum
Louisiana
Shreve Island Elementary, Caddo Parish Schools Shreveport LA American Sweetgum
YMCA of Bogalusa Bogalusa LA Loblolly Pine
Massachusetts
Bernardston Elementary School Bernardston MA American Sweetgum
Michigan
The Botanic Garden at Historic Barns Park Traverse City MI Sycamore
Minnesota
Forest Lake Area High School Forest Lake MN Sycamore
Missouri
Columbia Public Schools Elementary Gifted Program Columbia MO American Sweetgum
Trailridge Elementary Lee’s Summit MO American Sweetgum
Mississippi
Bayou Academy Cleveland MS American Sweetgum
Clinton Community Nature Center Clinton MS American Sweetgum
North Carolina
Cardinal Gibbons High School Raleigh NC American Sweetgum
FIND Outdoors Cradle of Forestry Pisgah National Forest NC American Sweetgum
Mars Hill University Mars Hill NC American Sweetgum
Montgomery County NC Extension Master Gardener Volunteers; The Gathering Garden Mount Gilead NC Loblolly Pine
North Carolina Executive Mansion – Governor’s Residence
Raleigh NC Loblolly Pine
North Carolina School of Science and Mathematics – Morganton Morganton NC American Sweetgum
White Oak High School Jacksonville NC American Sweetgum
North Carolina School of Science and Mathematics – Durham Durham NC Sycamore
Nebraska
Hastings College Hastings NE American Sweetgum
University of Nebraska-Lincoln Lincoln NE American Sweetgum
New Hampshire
Barnstead Elementary School Center Barnstead NH Sycamore
Nashua Community College Nashua NH Sycamore
New Jersey
Edelman Planetarium at Rowan University Glassboro NJ American Sweetgum
Information Age Learning Center Wall Township NJ American Sweetgum
New Mexico
New Mexico Farm & Ranch Heritage Museum Las Cruces NM Loblolly Pine
New York
Baldwinsville Central School District Baldwinsville NY Sycamore
Bronx Community College Bronx NY Sycamore
Franklin Middle School, Kenmore-Town of Tonawanda School District Town of Tonawanda NY Sycamore
Pembroke Junior/Senior High School Corfu NY American Sweetgum
Rome City School District Rome NY Sequoia
State University of New York (SUNY) – New Paltz New Paltz NY American Sweetgum
Suffolk County Vanderbilt Museum and Planetarium Centerport NY American Sweetgum
Ohio
Claymont High School Uhrichsville OH Sycamore
Coldwater Exempted Village Schools Coldwater OH American Sweetgum
Copley-Fairlawn Middle School, Copley-Fairlawn City Schools Copley OH Sycamore
Liberty-Benton High School Findlay OH Sycamore
Marshall STEMM Academy Toledo OH American Sweetgum
Portsmouth City Schools Portsmouth OH American Sweetgum
Pymatuning Valley High School Andover OH American Sweetgum
Wayne National Forest Nelsonville OH American Sweetgum
Oklahoma
Centennial Middle School Broken Arrow OK Loblolly Pine
Jenks Northwest Elementary School Tulsa OK American Sweetgum
Perkins Public Library: Thomas – Wilhite Memorial Library Perkins OK American Sweetgum
Oregon
Crow Middle School Eugene OR American Sweetgum
Friends of Myrtle Creek Library Myrtle Creek OR American Sweetgum
Lent Elementary School Portland OR American Sweetgum
Tamarack Elementary School Hillsboro OR American Sweetgum
Willamette Elementary School, McMinnville School District McMinnville OR American Sweetgum
Pennsylvania
Allegheny Observatory, University of Pittsburgh Pittsburgh PA American Sweetgum
Montour High School McKees Rocks PA American Sweetgum
Penn State University, Penn State Erie – The Behrend College Erie PA American Sweetgum
Penn State University, Penn State Schuylkill University Park PA Sycamore
Perkiomen Valley Middle School East Collegeville PA American Sweetgum
The Reading Public Museum Reading PA Sycamore
Rhode Island
Tiverton Public Library Tiverton RI American Sweetgum
South Carolina
Academy for the Arts, Science, & Technology Myrtle Beach SC Loblolly Pine
Conway Elementary School Conway SC American Sweetgum
Manning Early Childhood Center, Clarendon School District Manning SC American Sweetgum
Spartanburg Community College Horticulture Program Spartanburg SC American Sweetgum
Tennessee
Great Smoky Mountain Council, Boy Scouts of America Knoxville TN American Sweetgum
Lipscomb Academy Nashville TN American Sweetgum
Pellissippi State Community College Knoxville TN Loblolly Pine
Sumner Academy Gallatin TN American Sweetgum
Texas
Atlanta Public Library Atlanta TX American Sweetgum
Beaumont Children’s Museum & Beaumont Botanical Gardens Beaumont TX Loblolly Pine
Bonham Pre-Kindergarten School San Marcos TX Loblolly Pine
Charles W. Young Junior High School Arlington TX Loblolly Pine
Clear Creek Intermediate, Clear Creek Independent School District (CCISD) League City TX American Sweetgum
Dallas Arboretum and Botanical Garden – Children’s Adventure Garden Dallas TX American Sweetgum
DeKalb Independent School District De Kalb TX Loblolly Pine
Doss Consolidated Common School District (CCSD) Doss TX American Sweetgum
Fort Worth Botanic Garden Fort Worth TX Loblolly Pine
Galveston County 4H Texas A&M AgriLife Extension Program (Houston Botanic Gardens) Houston TX American Sweetgum
Goliad Independent School District Goliad TX Loblolly Pine
Greens Prairie Elementary School College Station TX American Sweetgum
Groves Elementary School Humble TX Loblolly Pine
Kay Granger Elementary School Fort Worth TX Loblolly Pine
Leadership Big Bend, Nopalitos Park Alpine TX American Sweetgum
Science Hall Elementary School Kyle TX American Sweetgum
Scobee Education Center at San Antonio College San Antonio TX Loblolly Pine
Space Center Intermediate, Clear Creek Independent School District (CCISD) Houston TX Loblolly Pine
Texas A&M Forest Service Conroe TX American Sweetgum
Texas A&M University, Physics & Astronomy Department College Station TX American Sweetgum
University of Texas at Arlington Arlington TX American Sweetgum
Uplift Summit International Preparatory Middle School Arlington TX Loblolly Pine
Westside Elementary School Cedar Park TX Loblolly Pine
Zilker Botanical Garden Conservancy Austin TX Loblolly Pine
Utah
Southern Utah University STEM Center Cedar City UT American Sweetgum
Virginia
Essex County Museum Tappahannock VA American Sweetgum
Virginia Living Museum Newport News VA Loblolly Pine
Virginia Zoo Norfolk VA Loblolly Pine
Washington
Innovation Lab High School Bothell WA Sycamore
Orchard Prairie School District Spokane WA Sycamore
Richland School District Richland WA Sycamore
Upper Columbia Resource Conservation & Development Council Spokane Valley WA Sycamore
Yakima Area Arboretum Yakima WA Sycamore
Wisconsin
Dunn County Historical Society Menomonie WI Sycamore
Fall 2024 Artemis I Moon Tree Stewards
Distribution is underway through November 2024. This list will be updated once distribution is complete. Previously notified recipients who have not received a seedling may be deferred to a later cycle based on current ready-to-ship seedling inventory.
Spring 2025 Artemis I Moon Tree Stewards
Selection is in progress.
Fall 2025 Artemis I Moon Tree Stewards
Selection is in progress.
Explore Moon Trees Website View the full article
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By NASA
X-ray: NASA/CXC/SAO/J. Drake et al, IR: NASA/JPL-Caltech/Spitzer; Image Processing: NASA/CXC/SAO/N. Wolk Most stars form in collections, called clusters or associations, that include very massive stars. These giant stars send out large amounts of high-energy radiation, which can disrupt relatively fragile disks of dust and gas that are in the process of coalescing to form new planets.
A team of astronomers used NASA’s Chandra X-ray Observatory, in combination with ultraviolet, optical, and infrared data, to show where some of the most treacherous places in a star cluster may be, where planets’ chances to form are diminished.
The target of the observations was Cygnus OB2, which is the nearest large cluster of stars to our Sun — at a distance of about 4,600 light-years. The cluster contains hundreds of massive stars as well as thousands of lower-mass stars. The team used long Chandra observations pointing at different regions of Cygnus OB2, and the resulting set of images were then stitched together into one large image.
The deep Chandra observations mapped out the diffuse X-ray glow in between the stars, and they also provided an inventory of the young stars in the cluster. This inventory was combined with others using optical and infrared data to create the best census of young stars in the cluster.
In this new composite image, the Chandra data (purple) shows the diffuse X-ray emission and young stars in Cygnus OB2, and infrared data from NASA’s now-retired Spitzer Space Telescope (red, green, blue, and cyan) reveals young stars and the cooler dust and gas throughout the region.
In these crowded stellar environments, copious amounts of high-energy radiation produced by stars and planets are present. Together, X-rays and intense ultraviolet light can have a devastating impact on planetary disks and systems in the process of forming.
Planet-forming disks around stars naturally fade away over time. Some of the disk falls onto the star and some is heated up by X-ray and ultraviolet radiation from the star and evaporates in a wind. The latter process, known as “photoevaporation,” usually takes between 5 and 10 million years with average-sized stars before the disk disappears. If massive stars, which produce the most X-ray and ultraviolet radiation, are nearby, this process can be accelerated.
The researchers using this data found clear evidence that planet-forming disks around stars indeed disappear much faster when they are close to massive stars producing a lot of high-energy radiation. The disks also disappear more quickly in regions where the stars are more closely packed together.
For regions of Cygnus OB2 with less high-energy radiation and lower numbers of stars, the fraction of young stars with disks is about 40%. For regions with more high-energy radiation and higher numbers of stars, the fraction is about 18%. The strongest effect — meaning the worst place to be for a would-be planetary system — is within about 1.6 light-years of the most massive stars in the cluster.
A separate study by the same team examined the properties of the diffuse X-ray emission in the cluster. They found that the higher-energy diffuse emission comes from areas where winds of gas blowing away from massive stars have collided with each other. This causes the gas to become hotter and produce X-rays. The less energetic emission probably comes from gas in the cluster colliding with gas surrounding the cluster.
Two separate papers describing the Chandra data of Cygnus OB2 are available. The paper about the planetary danger zones, led by Mario Giuseppe Guarcello (National Institute for Astrophysics in Palermo, Italy), appeared in the November 2023 issue of the Astrophysical Journal Supplement Series, and is available here. The paper about the diffuse emission, led by Juan Facundo Albacete-Colombo (University of Rio Negro in Argentina) was published in the same issue of Astrophysical Journal Supplement, and is available here.
NASA’s Marshall Space Flight Center in Huntsville, Alabama, manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.
JPL managed the Spitzer Space Telescope mission for NASA’s Science Mission Directorate in Washington until the mission was retired in January 2020. Science operations were conducted at the Spitzer Science Center at Caltech. Spacecraft operations were based at Lockheed Martin Space in Littleton, Colorado. Data are archived at the Infrared Science Archive operated by IPAC at Caltech. Caltech manages JPL for NASA.
Read more from NASA’s Chandra X-ray Observatory.
Learn more about the Chandra X-ray Observatory and its mission here:
https://www.nasa.gov/chandra
https://chandra.si.edu
Visual Description
This release features a composite image of the Cygnus OB2 star cluster, which resembles a night sky blanketed in orange, purple, and grey clouds.
The center of the square image is dominated by purple haze. This haze represents diffuse X-ray emissions, and young stars, detected by the Chandra X-ray observatory. Surrounding the purple haze is a mottled, streaky, brick orange cloud. Another cloud resembling a tendril of grey smoke stretches from our lower left to the center of the image. These clouds represent relatively cool dust and gas observed by the Spitzer Space Telescope.
Although the interwoven clouds cover most of the image, the thousands of stars within the cluster shine through. The lower-mass stars present as tiny specks of light. The massive stars gleam, some with long refraction spikes.
News Media Contact
Megan Watzke
Chandra X-ray Center
Cambridge, Mass.
617-496-7998
mwatzke@cfa.harvard.edu
Lane Figueroa
Marshall Space Flight Center, Huntsville, Alabama
256-544-0034
lane.e.figueroa@nasa.gov
View the full article
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By NASA
X-ray: NASA/CXC/Xiamen Univ./C. Ge; Optical: DESI collaboration; Image Processing: NASA/CXC/SAO/N. Wolk Astronomers using NASA’s Chandra X-ray Observatory have found a galaxy cluster has two streams of superheated gas crossing one another. This result shows that crossing the streams may lead to the creation of new structure.
Researchers have discovered an enormous, comet-like tail of hot gas — spanning over 1.6 million light-years long — trailing behind a galaxy within the galaxy cluster called Zwicky 8338 (Z8338 for short). This tail, spawned as the galaxy had some of its gas stripped off by the hot gas it is hurtling through, has split into two streams.
This is the second pair of tails trailing behind a galaxy in this system. Previously, astronomers discovered a shorter pair of tails from a different galaxy near this latest one. This newer and longer set of tails was only seen because of a deeper observation with Chandra that revealed the fainter X-rays.
Researchers have discovered a second pair of tails trailing behind a galaxy in this cluster. Previously, astronomers discovered a shorter pair of tails from a different galaxy close to this latest one. This newer and longer set of tails was only seen because of a deeper observation with Chandra that revealed the fainter X-rays that have been shown in the optical data. These tails span for over a million light-years and help determine the evolution of the galaxy cluster.X-ray: NASA/CXC/Xiamen Univ./C. Ge; Optical: DESI collaboration; Image Processing: NASA/CXC/SAO/N. Wolk Astronomers now have evidence that these streams trailing behind the speeding galaxies have crossed one another. Z8338 is a chaotic landscape of galaxies, superheated gas, and shock waves (akin to sonic booms created by supersonic jets) in one relatively small region of space. These galaxies are in motion because they were part of two galaxy clusters that collided with each other to create Z8338.
This new composite image shows this spectacle. X-rays from Chandra (represented in purple) outline the multimillion-degree gas that outweighs all of the galaxies in the cluster. The Chandra data also shows where this gas has been jettisoned behind the moving galaxies. Meanwhile an optical image from the Dark Energy Survey from the Cerro Tololo Inter-American Observatory in Chile shows the individual galaxies peppered throughout the same field of view.
The original gas tail discovered in Z8338 is about 800,000 light-years long and is seen as vertical in this image (see the labeled version). The researchers think the gas in this tail is being stripped away from a large galaxy as it travels through the galaxy cluster. The head of the tail is a cloud of relatively cool gas about 100,000 light-years away from the galaxy it was stripped from. This tail is also separated into two parts.
The team proposes that the detachment of the tail from the large galaxy may have been caused by the passage of the other, longer tail. Under this scenario, the tail detached from the galaxy because of the crossing of the streams.
The results give useful information about the detachment and destruction of clouds of cooler gas like those seen in the head of the detached tail. This work shows that the cloud can survive for at least 30 million years after it is detached. During that time, a new generation of stars and planets may form within it.
The Z8338 galaxy cluster and its jumble of galactic streams are located about 670 million light-years from Earth. A paper describing these results appeared in the Aug. 8, 2023, issue of the Monthly Notices of the Royal Astronomical Society and is available online at: https://academic.oup.com/mnras/article/525/1/1365/7239302.
NASA’s Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.
Read more from NASA’s Chandra X-ray Observatory.
Learn more about the Chandra X-ray Observatory and its mission here:
https://www.nasa.gov/chandra
https://chandra.si.edu
Visual Description:
This release features a composite image of two pairs of hot gas tails found inside a single galaxy cluster. The image is presented both labeled and unlabeled, with color-coded ovals encircling the hot gas tails.
In both the labeled and unlabeled versions of the image, mottled purple gas speckles a region of space dotted with distant flecks of red and white. Also present in this region of space are several glowing golden dots. These dots are individual galaxies that together form the cluster Zwicky 8338.
To our right of center is a glowing golden galaxy with a mottled V shaped cloud of purple above it. Yellow labels identify the two arms of the V as tails trailing behind the hurtling galaxy below.
To our left of center is another golden galaxy, this one surrounded by purple gas. Behind it, opening toward our right in the shape of a widening V lying on its side, are two more mottled purple clouds. Labeled in white, these newly-discovered gas tails are even larger than the previously discovered tails labeled in yellow. These tails, which overlap with the galaxy on our right, are over 1.6 million light-years long.
News Media Contact
Megan Watzke
Chandra X-ray Center
Cambridge, Mass.
617-496-7998
Lane Figueroa
Marshall Space Flight Center, Huntsville, Alabama
256-544-0034
lane.e.figueroa@nasa.gov
View the full article
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