PDRs4All II: JWST's NIR and MIR imaging view of the Orion Nebula
Creators: name: Habart, Emilie
name: Peeters, Els
name: Berné, Olivier
name: Trahin, Boris
name: Canin, Amélie
name: Chown, Ryan
name: Sidhu, Ameek
name: Van De Putte, Dries
name: Alarcón, Felipe
name: Schroetter, Ilane
name: Dartois, Emmanuel
name: Vicente, Sílvia
name: Abergel, Alain
name: Bergin, Edwin A.
name: Bernard-Salas, Jeronimo
name: Boersma, Christiaan
name: Bron, Emeric
name: Cami, Jan
name: Cuadrado, Sara
name: Dicken, Daniel
name: Elyajouri, Meriem
name: Fuente, Asunción
name: Goicoechea, Javier R.
name: Gordon, Karl D.
name: Issa, Lina
name: Joblin, Christine
name: Kannavou, Olga
name: Khan, Baria
name: Lacinbala, Ozan
name: Languignon, David
name: Gal, Romane Le
name: Maragkoudakis, Alexandros
name: Meshaka, Raphael
name: Okada, Yoko
name: Onaka, Takashi
name: Pasquini, Sofia
name: Pound, Marc W.
name: Robberto, Massimo
name: Röllig, Markus
name: Schefter, Bethany
name: Schirmer, Thiébaut
name: Tabone, Benoit
name: Tielens, Alexander G. G. M.
name: Wolfire, Mark G.
name: Zannese, Marion
name: Ysard, Nathalie
name: Miville-Deschenes, Marc-Antoine
name: Aleman, Isabel
name: Allamandola, Louis
name: Auchettl, Rebecca
name: Baratta, Giuseppe Antonio
name: Bejaoui, Salma
name: Bera, Partha P.
name: Black, John H.
name: Boulanger, Francois
name: Bouwman, Jordy
name: Brandl, Bernhard
name: Brechignac, Philippe
name: Brünken, Sandra
name: Buragohain, Mridusmita
name: Burkhardt, rew
name: Candian, Alessandra
name: Cazaux, Stéphanie
name: Cernicharo, Jose
name: Chabot, Marin
name: Chakraborty, Shubhadip
name: Champion, Jason
name: Colgan, Sean W. J.
name: Cooke, Ilsa R.
name: Coutens, Audrey
name: Cox, Nick L. J.
name: Demyk, Karine
name: Meyer, Jennifer Donovan
name: Foschino, Sacha
name: García-Lario, Pedro
name: Gavilan, Lisseth
name: Gerin, Maryvonne
name: Gottlieb, Carl A.
name: Guillard, Pierre
name: Gusdorf, Antoine
name: Hartigan, Patrick
name: He, Jinhua
name: Herbst, Eric
name: Hornekaer, Liv
name: Jäger, Cornelia
name: Janot-Pacheco, Eduardo
name: Kaufman, Michael
name: Kemper, Francisca
name: Kendrew, Sarah
name: Kirsanova, Maria S.
name: Klaassen, Pamela
name: Kwok, Sun
name: Labiano, Álvaro
name: Lai, Thomas S. -Y.
name: Lee, Timothy J.
name: Lefloch, Bertrand
name: Petit, Franck Le
name: Li, Aigen
name: Linz, Hendrik
name: Mackie, Cameron J.
name: Madden, Suzanne C.
name: Mascetti, Joëlle
name: McGuire, Brett A.
name: Merino, Pablo
name: Micelotta, Elisabetta R.
name: Misselt, Karl
name: Morse, Jon A.
name: Mulas, Giacomo
name: Neelamkodan, Naslim
name: Ohsawa, Ryou
name: Omont, Alain
name: Paladini, Roberta
name: Palumbo, Maria Elisabetta
name: Pathak, Amit
name: Pendleton, Yvonne J.
name: Petrignani, Annemieke
name: Pino, Thomas
name: Puga, Elena
name: Rangwala, Naseem
name: Rapacioli, Mathias
name: Ricca, Alessandra
name: Roman-Duval, Julia
name: Roser, Joseph
name: Roueff, Evelyne
name: Rouillé, Gaël
name: Salama, Farid
name: Sales, Dinalva A.
name: Sandstrom, Karin
name: Sarre, Peter
name: Sciamma-O'Brien, Ella
name: Sellgren, Kris
name: Shenoy, Sachindev S.
name: Teyssier, David
name: Thomas, Richard D.
name: Togi, Aditya
name: Verstraete, Laurent
name: Witt, Adolf N.
name: Wootten, Alwyn
name: Zettergren, Henning
name: Zhang, Yong
name: Zhang, Ziwei E.
name: Zhen, Junfeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The JWST has captured the most detailed and sharpest infrared images ever taken of the inner region of the Orion Nebula, the nearest massive star formation region, and a prototypical highly irradiated dense photo-dissociation region (PDR). We investigate the fundamental interaction of far-ultraviolet photons with molecular clouds. The transitions across the ionization front (IF), dissociation front (DF), and the molecular cloud are studied at high-angular resolution. These transitions are relevant to understanding the effects of radiative feedback from massive stars and the dominant physical and chemical processes that lead to the IR emission that JWST will detect in many Galactic and extragalactic environments. Due to the proximity of the Orion Nebula and the unprecedented angular resolution of JWST, these data reveal that the molecular cloud borders are hyper structured at small angular scales of 0.1-1" (0.0002-0.002 pc or 40-400 au at 414 pc). A diverse set of features are observed such as ridges, waves, globules and photoevaporated protoplanetary disks. At the PDR atomic to molecular transition, several bright features are detected that are associated with the highly irradiated surroundings of the dense molecular condensations and embedded young star. Toward the Orion Bar PDR, a highly sculpted interface is detected with sharp edges and density increases near the IF and DF. This was predicted by previous modeling studies, but the fronts were unresolved in most tracers. A complex, structured, and folded DF surface was traced by the H2 lines. This dataset was used to revisit the commonly adopted 2D PDR structure of the Orion Bar. JWST provides us with a complete view of the PDR, all the way from the PDR edge to the substructured dense region, and this allowed us to determine, in detail, where the emission of the atomic and molecular lines, aromatic bands, and dust originate.