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Journal Articles Astron.Astrophys. Year : 2024

PDRs4All III: JWST's NIR spectroscopic view of the Orion Bar

Els Peeters , Emilie Habart (1) , Olivier Berné (2) , Ameek Sidhu , Ryan Chown , Dries van de Putte , Boris Trahin (1) , Ilane Schroetter (2) , Amélie Canin (2) , Felipe Alarcón , Bethany Schefter , Baria Khan , Sofia Pasquini , Alexander G.G.M Tielens , Mark G Wolfire , Emmanuel Dartois (3) , Javier R Goicoechea , Alexandros Maragkoudakis , Takashi Onaka , Marc W Pound , Sílvia Vicente , Alain Abergel (1) , Edwin A Bergin , Jeronimo Bernard-Salas , Christiaan Boersma , Emeric Bron (4) , Jan Cami , Sara Cuadrado , Daniel Dicken , Meriem Elyajouri (1) , Asunción Fuente , Karl D Gordon , Lina Issa (2) , Christine Joblin (2) , Olga Kannavou (1) , Ozan Lacinbala , David Languignon (4) , Romane Le Gal (5, 6) , Raphael Meshaka (4, 1) , Yoko Okada , Massimo Robberto , Markus Röllig , Thiébaut Schirmer (1) , Benoit Tabone (1) , Marion Zannese (1) , Isabel Aleman , Louis Allamandola , Rebecca Auchettl , Giuseppe Antonio Baratta , Salma Bejaoui , Partha P Bera , John H Black , Francois Boulanger (7) , Jordy Bouwman , Bernhard Brandl , Philippe Brechignac (3) , Sandra Brünken , Mridusmita Buragohain , Andrew Burkhardt , Alessandra Candian , Stéphanie Cazaux , Jose Cernicharo , Marin Chabot (8) , Shubhadip Chakraborty (9) , Jason Champion (2) , Sean W.J Colgan , Ilsa R Cooke , Audrey Coutens (2) , Nick L.J Cox , Karine Demyk (2) , Jennifer Donovan Meyer , Sacha Foschino (2) , Pedro García-Lario , Maryvonne Gerin (4) , Carl A Gottlieb , Pierre Guillard (10, 11) , Antoine Gusdorf (12, 4) , Patrick Hartigan , Jinhua He , Eric Herbst , Liv Hornekaer , Cornelia Jäger , Eduardo Janot-Pacheco , Michael Kaufman , Sarah Kendrew , Maria S Kirsanova , Pamela Klaassen , Sun Kwok , Álvaro Labiano , Thomas S.-Y Lai , Timothy J Lee , Bertrand Lefloch (5) , Franck Le Petit (4) , Aigen Li , Hendrik Linz , Cameron J Mackie , Suzanne C Madden (13) , Joëlle Mascetti (14) , Brett A Mcguire , Pablo Merino , Elisabetta R Micelotta , Karl Misselt , Jon A Morse , Giacomo Mulas (2) , Naslim Neelamkodan , Ryou Ohsawa , Roberta Paladini , Maria Elisabetta Palumbo , Amit Pathak , Yvonne J Pendleton , Annemieke Petrignani , Thomas Pino (3) , Elena Puga , Naseem Rangwala , Mathias Rapacioli (15, 16) , Alessandra Ricca , Julia Roman-Duval , Joseph Roser , Evelyne Roueff (4) , Gaël Rouillé , Farid Salama , Dinalva A Sales , Karin Sandstrom , Peter Sarre , Ella Sciamma-O'Brien , Kris Sellgren , Sachindev S Shenoy , David Teyssier , Richard D Thomas , Aditya Togi , Laurent Verstraete (1) , Adolf N Witt , Alwyn Wootten , Nathalie Ysard (1) , Henning Zettergren , Yong Zhang , Ziwei E Zhang , Junfeng Zhen
Els Peeters
  • Function : Author
Ameek Sidhu
  • Function : Author
Ryan Chown
  • Function : Author
Dries van de Putte
  • Function : Author
Felipe Alarcón
  • Function : Author
Bethany Schefter
  • Function : Author
Baria Khan
  • Function : Author
Sofia Pasquini
  • Function : Author
Alexander G.G.M Tielens
  • Function : Author
Mark G Wolfire
  • Function : Author
Javier R Goicoechea
  • Function : Author
Alexandros Maragkoudakis
  • Function : Author
Takashi Onaka
  • Function : Author
Marc W Pound
  • Function : Author
Sílvia Vicente
  • Function : Author
Edwin A Bergin
  • Function : Author
Jeronimo Bernard-Salas
  • Function : Author
Christiaan Boersma
  • Function : Author
Jan Cami
  • Function : Author
Sara Cuadrado
  • Function : Author
Daniel Dicken
  • Function : Author
Asunción Fuente
  • Function : Author
Karl D Gordon
  • Function : Author
Ozan Lacinbala
  • Function : Author
Yoko Okada
  • Function : Author
Massimo Robberto
  • Function : Author
Markus Röllig
  • Function : Author
Isabel Aleman
  • Function : Author
Louis Allamandola
  • Function : Author
Rebecca Auchettl
  • Function : Author
Giuseppe Antonio Baratta
  • Function : Author
Salma Bejaoui
  • Function : Author
Partha P Bera
  • Function : Author
John H Black
  • Function : Author
Francois Boulanger
  • Function : Author
Jordy Bouwman
  • Function : Author
Bernhard Brandl
  • Function : Author
Sandra Brünken
  • Function : Author
Mridusmita Buragohain
  • Function : Author
Andrew Burkhardt
  • Function : Author
Alessandra Candian
  • Function : Author
Stéphanie Cazaux
  • Function : Author
Jose Cernicharo
  • Function : Author
Sean W.J Colgan
  • Function : Author
Ilsa R Cooke
  • Function : Author
Nick L.J Cox
  • Function : Author
Jennifer Donovan Meyer
  • Function : Author
Pedro García-Lario
  • Function : Author
Carl A Gottlieb
  • Function : Author
Patrick Hartigan
  • Function : Author
Jinhua He
  • Function : Author
Eric Herbst
  • Function : Author
Liv Hornekaer
  • Function : Author
Cornelia Jäger
  • Function : Author
Eduardo Janot-Pacheco
  • Function : Author
Michael Kaufman
  • Function : Author
Sarah Kendrew
  • Function : Author
Maria S Kirsanova
  • Function : Author
Pamela Klaassen
  • Function : Author
Sun Kwok
  • Function : Author
Álvaro Labiano
  • Function : Author
Thomas S.-Y Lai
  • Function : Author
Timothy J Lee
  • Function : Author
Aigen Li
  • Function : Author
Hendrik Linz
  • Function : Author
Cameron J Mackie
  • Function : Author
Brett A Mcguire
  • Function : Author
Pablo Merino
  • Function : Author
Elisabetta R Micelotta
  • Function : Author
Karl Misselt
  • Function : Author
Jon A Morse
  • Function : Author
Naslim Neelamkodan
  • Function : Author
Ryou Ohsawa
  • Function : Author
Roberta Paladini
  • Function : Author
Maria Elisabetta Palumbo
  • Function : Author
Amit Pathak
  • Function : Author
Yvonne J Pendleton
  • Function : Author
Annemieke Petrignani
  • Function : Author
Elena Puga
  • Function : Author
Naseem Rangwala
  • Function : Author
Alessandra Ricca
  • Function : Author
Julia Roman-Duval
  • Function : Author
Joseph Roser
  • Function : Author
Gaël Rouillé
  • Function : Author
Farid Salama
  • Function : Author
Dinalva A Sales
  • Function : Author
Karin Sandstrom
  • Function : Author
Peter Sarre
  • Function : Author
Ella Sciamma-O'Brien
  • Function : Author
Kris Sellgren
  • Function : Author
Sachindev S Shenoy
  • Function : Author
David Teyssier
  • Function : Author
Richard D Thomas
  • Function : Author
Aditya Togi
  • Function : Author
Adolf N Witt
  • Function : Author
Alwyn Wootten
  • Function : Author
Henning Zettergren
  • Function : Author
Yong Zhang
  • Function : Author
Ziwei E Zhang
  • Function : Author
Junfeng Zhen
  • Function : Author

Abstract

(Abridged) We investigate the impact of radiative feedback from massive stars on their natal cloud and focus on the transition from the HII region to the atomic PDR (crossing the ionisation front (IF)), and the subsequent transition to the molecular PDR (crossing the dissociation front (DF)). We use high-resolution near-IR integral field spectroscopic data from NIRSpec on JWST to observe the Orion Bar PDR as part of the PDRs4All JWST Early Release Science Program. The NIRSpec data reveal a forest of lines including, but not limited to, HeI, HI, and CI recombination lines, ionic lines, OI and NI fluorescence lines, Aromatic Infrared Bands (AIBs including aromatic CH, aliphatic CH, and their CD counterparts), CO2 ice, pure rotational and ro-vibrational lines from H2, and ro-vibrational lines HD, CO, and CH+, most of them detected for the first time towards a PDR. Their spatial distribution resolves the H and He ionisation structure in the Huygens region, gives insight into the geometry of the Bar, and confirms the large-scale stratification of PDRs. We observe numerous smaller scale structures whose typical size decreases with distance from Ori C and IR lines from CI, if solely arising from radiative recombination and cascade, reveal very high gas temperatures consistent with the hot irradiated surface of small-scale dense clumps deep inside the PDR. The H2 lines reveal multiple, prominent filaments which exhibit different characteristics. This leaves the impression of a "terraced" transition from the predominantly atomic surface region to the CO-rich molecular zone deeper in. This study showcases the discovery space created by JWST to further our understanding of the impact radiation from young stars has on their natal molecular cloud and proto-planetary disk, which touches on star- and planet formation as well as galaxy evolution.
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hal-04591062 , version 1 (29-05-2024)

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Els Peeters, Emilie Habart, Olivier Berné, Ameek Sidhu, Ryan Chown, et al.. PDRs4All III: JWST's NIR spectroscopic view of the Orion Bar. Astron.Astrophys., 2024, 685, pp.A74. ⟨10.1051/0004-6361/202348244⟩. ⟨hal-04591062⟩
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