First Immense Orion Nebula Webb Space Telescope Images Leave Astronomers “Blown Away”

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First Immense Orion Nebula Webb Space Telescope Images Leave Astronomers
The inner region of the Orion Nebula as seen with the James Webb Space Telescope's NIRCam instrument. This is a multi-filter composite image showing emissions from ionized gas, molecular gas, hydrocarbons, dust, and scattered starlight. Most prominent is the Orion Bar, a wall of dense gas and dust that extends from the upper left to lower right of the image and contains the bright star θ2 Orion A. The scene is illuminated by a hot, young, massive star cluster (known as a trapezoidal cluster) located just off the upper-right corner of the image. Strong and harsh ultraviolet radiation from the trapezoidal cluster creates a hot ionizing environment in the upper right, slowly eroding the Orion rod. Molecules and dust can survive longer in the shielded environment provided by the denser bars, but the surge in stellar energy causes filaments, globules, disk-shaped young stars, and cavities to become unbelievable. As abundant areas are shaped. Image Credits: NASA, ESA, CSA, Data Reduction and Analysis: PDRs4All ERS Team. Graphics processing S. Fuenmayor

Stunning new Webb images show the Orion Nebula

The James Webb Space Telescope (Webb) has once again demonstrated its incredible capabilities by capturing the most detailed and sharp image yet of the inner region of the Orion Nebula. This stellar nursery in the constellation Orion is about 1,350 light-years from Earth.

Researchers at Western University in Ontario, Canada, were part of an international collaboration aimed at the newly released images.

“I am overwhelmed by the amazing images of the Orion Nebula. This project started for him in 2017, so he waited over five years to get this data,” said an astrophysicist at Western University. says Els Peeters. These images were acquired at JWST as part of the Early Release Science program Photodissociation Regions for All (PDRs4All ID 1288). Co-led by Peeters, Olivier Berné, scientist at the French National Center for Scientific Research (CNRS), and Emilie Habart, associate professor at the Institut d’Astrophysique Spatiale (IAS), PDRs4All is an international research project involving a team of over 100 scientists. This is joint research. 18 countries participated. Other Western University astrophysicists involved in PDRs4All include Jean Cami, Amic Sidhu, Ryan Chung, Bethany Schefter, Sophia Pasquini, and Barria Khan.

Young stars with disks in cocoons: Planets form disks of gas and dust around young stars. These disks are scattered, or “photoevaporated,” by the intense radiation fields of stars near the trapezium, creating cocoons of dust and gas around them. In the Orion Nebula, nearly 180 of these externally illuminated photoevaporative disks (also called proprids) have been found in the Orion Nebula, with HST-10 (one pictured) being the largest known. It’s one of those things. The orbit of Neptune is shown for comparison. Filaments: The big picture contains a wealth of filaments of different sizes and shapes. The inset here shows a thin, tortuous filament that is particularly rich in hydrocarbon and hydrogen molecules. θ2 Orion A: The brightest star in this image is θ2 Orion A, bright enough to be visible to the unaided eye from dark places on Earth. Starlight reflected on dust particles causes a red glow in its immediate vicinity. Spherical young stars: When dense clouds of gas and dust become gravitationally unstable, they collapse into stellar embryos that gradually gain mass and begin to glow until nuclear fusion can begin in the core. This young star is still embedded in the natal cloud. Image Credits: NASA, ESA, CSA, Data Reduction and Analysis: PDRs4All ERS Team. Graphic Editing S. Fuenmayor & O. Bern

“These new observations will allow us to better understand how massive stars alter the clouds of gas and dust in which they are born,” said Peters, of Western University. Professor of Astronomy and a faculty member at the Institute for Earth and Space Exploration.

“Large young stars emit large amounts of ultraviolet radiation directly into the primordial clouds that still surround them, and this changes the physical shape and chemical composition of the clouds. and how it influences planet formation is not yet known.”

Newly released images reveal many spectacular features within the nebula, down to magnitudes that rival the size of our Solar System.

“You can clearly see some dense filaments. These filamentary structures have the potential to nurture new generations of stars in the lower regions of dust and gas clouds. It also shows systems that have already formed,” said Boerne. “Inside that cocoon, young stars are observed in nebulae with disks of dust and gas where planets are forming. Small stars dug out by new stars blown away by strong radiation and the nascent star wind.” You can clearly see the cavities.”

A proprid, or ionized protoplanetary disk, consists of a central protostar surrounded by a disk of dust and gas from which planets are formed. Scattered across the image are multiple protostellar jets, outflows, and nascent stars embedded in dust. “Looking at the intricate details of how the interstellar medium is structured in these environments, we have never been able to understand how planetary systems form in the presence of this harsh radiation. “These images reveal the legacy of the interstellar medium in our planetary system,” Hubbert said.

“These new observations will allow us to better understand how massive stars alter the clouds of gas and dust in which they are born,” said Peters, of Western University. Professor of Astronomy and a faculty member at the Institute for Earth and Space Exploration.
“Large young stars emit large amounts of ultraviolet radiation directly into the primordial clouds that still surround them, and this changes the physical shape and chemical composition of the clouds. and how it influences planet formation is not yet known.”
Newly released images reveal many spectacular features within the nebula, down to magnitudes that rival the size of our Solar System.
“You can clearly see some dense filaments. These filamentary structures have the potential to nurture new generations of stars in the lower regions of dust and gas clouds. It also shows systems that have already formed,” said Boerne. “Inside that cocoon, young stars are observed in nebulae with disks of dust and gas where planets are forming. Tiny stars dug out by new stars blown away by intense radiation and the star winds of newborn stars.” You can clearly see the cavities.”
A proprid, or ionized protoplanetary disk, consists of a central protostar surrounded by a disk of dust and gas from which planets are formed. Scattered across the image are multiple protostellar jets, outflows, and nascent stars embedded in dust. “Looking at the intricate details of how the interstellar medium is structured in these environments, we have never been able to understand how planetary systems form in the presence of this harsh radiation. “These images reveal the legacy of the interstellar medium in our planetary system,” Hubbert said.

Analog evolution

The Orion Nebula has long been thought to be a cradle-like environment for the solar system that “formed over 4.5 billion years ago.” That is why scientists today are interested in observing the Orion Nebula. They want to use analogies to understand what happened in his first million years of Earth evolution.

The heart of a stellar nursery like the Orion Nebula is covered by so much stardust that telescopes like the Hubble Space Telescope are used to study what is happening inside in visible light. is not possible. Webb will detect infrared radiation from space, allowing astronomers to see through these layers of dust, revealing what is happening deep inside the nebula.

The inner region of the Orion Nebula as seen by both the Spitzer Space Telescope (left) and the James Webb Space Telescope (right). Both images were taken with filters that are particularly sensitive to hydrocarbon dust emissions that illuminate the entire image. This comparison is a powerful example of how incredibly sharp Webb’s image is compared to its infrared precursor, the Spitzer Space Telescope. This is readily apparent from the complex filaments, but Webb’s sharp eyesight also allows him to better distinguish between stars and spheres and protoplanetary disks.
NIRCam image sources: NASA, ESA, CSA, PDRs4All ERS team. Photo editing by Olivier Vernet. Spitzer image credit: NASA/JPL-Caltech/T. Megaath (University of Toledo, Ohio)
Technical details: Spitzer’s image shows his 3.6-micron infrared light captured by Spitzer’s Infrared Array His camera (IRAC). JWST image shows infrared light at 3.35 microns captured by JWST NIRCam. Black pixels are artifacts due to saturation of the detector by bright stars.

“Observing the Orion Nebula was challenging because it is so bright for Webb’s unprecedentedly sensitive instruments. We can also see Jupiter and Orion, one of the brightest sources in the world,” Berné said.

At the center of the Orion Nebula is the Trapezium Star Cluster (also known as Theta Orion) discovered by Galileo. It contains young massive stars whose intense ultraviolet radiation forms clouds of dust and gas. Understanding how this intense radiation affects its surroundings is an important issue in understanding the formation of star systems like our own solar system. “Seeing these first images of the Orion Nebula is just the beginning. The PDRs4All team is hard at work analyzing Orion’s data and awaits new discoveries about the early stages of star system formation. said Habart. “I am delighted to join Webb on his journey of discovery.”

Webb is the most powerful space telescope in human history. Developed in collaboration with NASA, the European Space Agency, and the Canadian Space Agency (CSA), the mirror features a honeycomb pattern of 18 hexagonal gold-coated mirror segments and a five-layer diamond-shaped sunshade. It features a typical 6.5 meter wide mirror. The size of the tennis court. As a partner, CSA is guaranteed a share of his Webb observation time, allowing Canadian scientists to be one of the first to explore data collected by the most advanced space telescope ever. increase.

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