12/16/2023 0 Comments New james webb images![]() ![]() Almost 180 of these externally illuminated photoevaporating disks around young stars (aka Proplyds) have been discovered in the Orion nebula, and HST-10 (the one in the picture) is one of the largest known. ![]() These disks are being dissipated or “photo-evaporated” due to the strong radiation field of the nearby stars of the Trapezium creating a cocoon of dust and gas around them. ![]() Young star with disk inside its cocoon: Planet forming disks of gas and dust around a young star. Co-led by Peeters, French National Centre for Scientific Research (CNRS) scientist Olivier Berné, and Institut d’Astrophysique Spatiale (IAS) associate professor Emilie Habart, PDRs4All is an international collaboration which involves a team of more than one hundred scientists in 18 countries, including Western astrophysicists Jan Cami, Ameek Sidhu, Ryan Chown, Bethany Schefter, Sofia Pasquini and Baria Kahn. These images have been obtained as part of the Early Release Science program Photodissociation Regions for All (PDRs4All ID 1288) on Webb. We started this project in 2017, so we have been waiting more than five years to get these data,” said Western astrophysicist Els Peeters. “We are blown away by the breathtaking images of the Orion Nebula. Several images in different filters were combined to create this composite image: F140M and F210M (blue) F277W, F300M, F323N, F335M, and F332W (green) F405N (orange) and F444W, F480M, and F470N (red). Technical details: The image was obtained with the James Webb Space Telescope NIRCam instrument on September 11, 2022. Molecules and dust can survive longer in the shielded environment offered by the dense Bar, but the surge of stellar energy sculpts a region that displays an incredible richness of filaments, globules, young stars with disks and cavities.Ĭredit: NASA, ESA, CSA, PDRs4All ERS Team image processing Salomé Fuenmayor The strong and harsh ultraviolet radiation of the Trapezium cluster creates a hot, ionized environment in the upper right, and slowly erodes the Orion Bar away. The scene is illuminated by a group of hot, young massive stars (known as the Trapezium Cluster) that is located just off the top right of the image. Most prominent is the Orion Bar, a wall of dense gas and dust that runs from the top left to the bottom right in this image, and that contains the bright star θ2 Orionis A. This is a composite image from several filters that represents emission from ionized gas, hydrocarbons, molecular gas, dust and scattered starlight. The inner region of the Orion Nebula as seen by the James Webb Space Telescope’s NIRCam instrument. ![]()
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