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1. PDRs4All VIII: Mid-IR emission line inventory of the Orion Bar

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

Mid-infrared emission features probe the properties of ionized gas, and hot or warm molecular gas. The Orion Bar is a frequently studied photodissociation region (PDR) containing large amounts of gas under these conditions, and was observed with the MIRI IFU aboard JWST as part of the "PDRs4All" program. The resulting IR spectroscopic images of high angular resolution (0.2") reveal a rich observational inventory of mid-IR emission lines, and spatially resolve the substructure of the PDR, with a mosaic cutting perpendicularly across the ionization front and three dissociation fronts. We extracted five spectra that represent the ionized, atomic, and molecular gas layers, and measured the most prominent gas emission lines. An initial analysis summarizes the physical conditions of the gas and the potential of these data. We identified around 100 lines, report an additional 18 lines that remain unidentified, and measured the line intensities and central wavelengths. The H I recombination lines originating from the ionized gas layer bordering the PDR, have intensity ratios that are well matched by emissivity coefficients from H recombination theory, but deviate up to 10% due contamination by He I lines. We report the observed emission lines of various ionization stages of Ne, P, S, Cl, Ar, Fe, and Ni, and show how certain line ratios vary between the five regions. We observe the pure-rotational H$_2$ lines in the vibrational ground state from 0-0 S(1) to 0-0 S(8), and in the first vibrationally excited state from 1-1 S(5) to 1-1 S(9). We derive H$_2$ excitation diagrams, and approximate the excitation with one thermal (~700 K) component representative of an average gas temperature, and one non-thermal component (~2700 K) probing the effect of UV pumping. We compare these results to an existing model for the Orion Bar PDR and highlight the differences with the observations., Comment: 26 pages, 12 figures, 3 tables. Submitted to A&A, under review (1st revision)

Published
2024
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2. A far-ultraviolet-driven photoevaporation flow observed in a protoplanetary disk

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

Most low-mass stars form in stellar clusters that also contain massive stars, which are sources of far-ultraviolet (FUV) radiation. Theoretical models predict that this FUV radiation produces photo-dissociation regions (PDRs) on the surfaces of protoplanetary disks around low-mass stars, impacting planet formation within the disks. We report JWST and Atacama Large Millimetere Array observations of a FUV-irradiated protoplanetary disk in the Orion Nebula. Emission lines are detected from the PDR; modelling their kinematics and excitation allows us to constrain the physical conditions within the gas. We quantify the mass-loss rate induced by the FUV irradiation, finding it is sufficient to remove gas from the disk in less than a million years. This is rapid enough to affect giant planet formation in the disk.

Published
2024

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

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
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., Comment: 52 pages, 30 figures, submitted to A&A

Published
2023
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4. PDRs4All II: JWST's NIR and MIR imaging view of the Orion Nebula

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

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.

Published
2023
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5. PDRs4All IV. An embarrassment of riches: Aromatic infrared bands in the Orion Bar

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract

(Abridged) Mid-infrared observations of photodissociation regions (PDRs) are dominated by strong emission features called aromatic infrared bands (AIBs). The most prominent AIBs are found at 3.3, 6.2, 7.7, 8.6, and 11.2 $\mu$m. The most sensitive, highest-resolution infrared spectral imaging data ever taken of the prototypical PDR, the Orion Bar, have been captured by JWST. We provide an inventory of the AIBs found in the Orion Bar, along with mid-IR template spectra from five distinct regions in the Bar: the molecular PDR, the atomic PDR, and the HII region. We use JWST NIRSpec IFU and MIRI MRS observations of the Orion Bar from the JWST Early Release Science Program, PDRs4All (ID: 1288). We extract five template spectra to represent the morphology and environment of the Orion Bar PDR. The superb sensitivity and the spectral and spatial resolution of these JWST observations reveal many details of the AIB emission and enable an improved characterization of their detailed profile shapes and sub-components. While the spectra are dominated by the well-known AIBs at 3.3, 6.2, 7.7, 8.6, 11.2, and 12.7 $\mu$m, a wealth of weaker features and sub-components are present. We report trends in the widths and relative strengths of AIBs across the five template spectra. These trends yield valuable insight into the photochemical evolution of PAHs, such as the evolution responsible for the shift of 11.2 $\mu$m AIB emission from class B$_{11.2}$ in the molecular PDR to class A$_{11.2}$ in the PDR surface layers. This photochemical evolution is driven by the increased importance of FUV processing in the PDR surface layers, resulting in a "weeding out" of the weakest links of the PAH family in these layers. For now, these JWST observations are consistent with a model in which the underlying PAH family is composed of a few species: the so-called 'grandPAHs'., Comment: 25 pages, 10 figures, to appear in A&A

Published
2023
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6. PDRs4All: A JWST Early Release Science Program on radiative feedback from massive stars

Author

Berné, Olivier, Habart, Émilie, Peeters, Els, Abergel, Alain, Bergin, Edwin A., Bernard-Salas, Jeronimo, Bron, Emeric, Cami, Jan, Cazaux, Stéphanie, Dartois, Emmanuel, Fuente, Asunción, Goicoechea, Javier R., Gordon, Karl D., Okada, Yoko, Onaka, Takashi, Robberto, Massimo, Röllig, Markus, Tielens, Alexander G. G. M., Vicente, Silvia, Wolfire, Mark G., Alarcon, Felipe, Boersma, C., Canin, Ameélie, Chown, Ryan, Dicken, Daniel, Languignon, David, Gal, Romane Le, Pound, Marc W., Trahin, Boris, Simmer, Thomas, Sidhu, Ameek, Van De Putte, Dries, Cuadrado, Sara, Guilloteau, Claire, Maragkoudakis, Alexandros, Schefter, Bethany R., Schirmer, Thiébaut, Aleman, Isabel, Allamandola, Louis, Auchettl, Rebecca, Baratta, Giuseppe Antonio, Bejaoui, Salma, Bera, Partha P., Bilalbegovic, Goranka, Black, John H., Boulanger, Francois, Bouwman, Jordy, Brandl, Bernhard, Brechignac, Philippe, Brunken, Sandra, Burkhardt, Andrew, Candian, Alessandra, Cernicharo, Jose, Chabot, Marin, Chakraborty, Shubhadip, Champion, Jason, Colgan, Sean W. J., Cooke, Ilsa R., Coutens, Audrey, Cox, Nick L. J., Demyk, Karine, Meyer, Jennifer Donovan, Engrand, Cécile, Foschino, Sacha, Garcıa-Lario, Pedro, Gavilan, Lisseth, Gerin, Maryvonne, Godard, Marie, Gottlieb, Carl A., Guillard, Pierre, Gusdorf, Antoine, Hartigan, Patrick, He, Jinhua, Herbst, Eric, Hornekaer, Liv, Jaeger, Cornelia, Janot-Pacheco, Eduardo, Joblin, Christine, Kaufman, Michael, Kemper, Francisca, Kendrew, Sarah, Kirsanova, Maria S., Klaassen, Pamela, Knight, Collin, Kwok, Sun, Labiano, Alvaro, Lai, Thomas S. -Y., Lee, Timothy J., Lefloch, Bertrand, Petit, Franck Le, Li, Aigen, Linz, Hendrik, Mackie, Cameron J., Madden, Suzanne C., Mascetti, Joelle, McGuire, Brett A., Merino, Pablo, Micelotta, Elisabetta R., Misselt, Karl, Morse, Jon A., Mulas, Giacomo, Neelamkodan, Naslim, Ohsawa, Ryou, Omont, Alain, Paladini, Roberta, Palumbo, Maria Elisabetta, Pathak, Amit, Pendleton, Yvonne J., Petrignani, Annemieke, Pino, Thomas, Puga, Elena, Rangwala, Naseem, Rapacioli, Mathias, Ricca, Alessandra, Roman-Duval, Julia, Roser, Joseph, Roueff, Evelyne, Rouille, Gael, Salama, Farid, Sales, Dinalva A., Sandstrom, Karin, Sarre, Peter, Sciamma-O'Brien, Ella, Sellgren, Kris, Shannon, Matthew J., Shenoy, Sachindev S., Teyssier, David, Thomas, Richard D., Togi, Aditya, Verstraete, Laurent, Witt, Adolf N., Wootten, Alwyn, Ysard, Nathalie, Zettergren, Henning, Zhang, Yong, Zhang, Ziwei E., and Zhen, Junfeng

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

Massive stars disrupt their natal molecular cloud material through radiative and mechanical feedback processes. These processes have profound effects on the evolution of interstellar matter in our Galaxy and throughout the Universe, from the era of vigorous star formation at redshifts of 1-3 to the present day. The dominant feedback processes can be probed by observations of the Photo-Dissociation Regions (PDRs) where the far-ultraviolet photons of massive stars create warm regions of gas and dust in the neutral atomic and molecular gas. PDR emission provides a unique tool to study in detail the physical and chemical processes that are relevant for most of the mass in inter- and circumstellar media including diffuse clouds, proto-planetary disks and molecular cloud surfaces, globules, planetary nebulae, and star-forming regions. PDR emission dominates the infrared (IR) spectra of star-forming galaxies. Most of the Galactic and extragalactic observations obtained with the James Webb Space Telescope (JWST) will therefore arise in PDR emission. In this paper we present an Early Release Science program using the MIRI, NIRSpec, and NIRCam instruments dedicated to the observations of an emblematic and nearby PDR: the Orion Bar. These early JWST observations will provide template datasets designed to identify key PDR characteristics in JWST observations. These data will serve to benchmark PDR models and extend them into the JWST era. We also present the Science-Enabling products that we will provide to the community. These template datasets and Science-Enabling products will guide the preparation of future proposals on star-forming regions in our Galaxy and beyond and will facilitate data analysis and interpretation of forthcoming JWST observations., Comment: Submitted to PASP

Published
2022
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7. PDRs4All. VIII. Mid-infrared emission line inventory of the Orion Bar

Author

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

Published
2024
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8. PDRs4All

Author

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

Published
2024
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11. PDRs4All: A JWST Early Release Science Program on Radiative Feedback from Massive Stars

Author

Berné, Olivier, additional, Habart, Émilie, additional, Peeters, Els, additional, Abergel, Alain, additional, Bergin, Edwin A., additional, Bernard-Salas, Jeronimo, additional, Bron, Emeric, additional, Cami, Jan, additional, Dartois, Emmanuel, additional, Fuente, Asunción, additional, Goicoechea, Javier R., additional, Gordon, Karl D., additional, Okada, Yoko, additional, Onaka, Takashi, additional, Robberto, Massimo, additional, Röllig, Markus, additional, Tielens, Alexander G. G. M., additional, Vicente, Sílvia, additional, Wolfire, Mark G., additional, Alarcón, Felipe, additional, Boersma, C., additional, Canin, Amélie, additional, Chown, Ryan, additional, Dicken, Daniel, additional, Languignon, David, additional, Le Gal, Romane, additional, Pound, Marc W., additional, Trahin, Boris, additional, Simmer, Thomas, additional, Sidhu, Ameek, additional, Van De Putte, Dries, additional, Cuadrado, Sara, additional, Guilloteau, Claire, additional, Maragkoudakis, Alexandros, additional, Schefter, Bethany R., additional, Schirmer, Thiébaut, additional, Cazaux, Stéphanie, additional, Aleman, Isabel, additional, Allamandola, Louis, additional, Auchettl, Rebecca, additional, Antonio Baratta, Giuseppe, additional, Bejaoui, Salma, additional, Bera, Partha P., additional, Bilalbegović, Goranka, additional, Black, John H., additional, Boulanger, Francois, additional, Bouwman, Jordy, additional, Brandl, Bernhard, additional, Brechignac, Philippe, additional, Brünken, Sandra, additional, Burkhardt, Andrew, additional, Candian, Alessandra, additional, Cernicharo, Jose, additional, Chabot, Marin, additional, Chakraborty, Shubhadip, additional, Champion, Jason, additional, Colgan, Sean W. J., additional, Cooke, Ilsa R., additional, Coutens, Audrey, additional, Cox, Nick L. J., additional, Demyk, Karine, additional, Donovan Meyer, Jennifer, additional, Engrand, Cécile, additional, Foschino, Sacha, additional, García-Lario, Pedro, additional, Gavilan, Lisseth, additional, Gerin, Maryvonne, additional, Godard, Marie, additional, Gottlieb, Carl A., additional, Guillard, Pierre, additional, Gusdorf, Antoine, additional, Hartigan, Patrick, additional, He, Jinhua, additional, Herbst, Eric, additional, Hornekaer, Liv, additional, Jäger, Cornelia, additional, Janot-Pacheco, Eduardo, additional, Joblin, Christine, additional, Kaufman, Michael, additional, Kemper, Francisca, additional, Kendrew, Sarah, additional, Kirsanova, Maria S., additional, Klaassen, Pamela, additional, Knight, Collin, additional, Kwok, Sun, additional, Labiano, Álvaro, additional, Lai, Thomas S.-Y., additional, Lee, Timothy J., additional, Lefloch, Bertrand, additional, Le Petit, Franck, additional, Li, Aigen, additional, Linz, Hendrik, additional, Mackie, Cameron J., additional, Madden, Suzanne C., additional, Mascetti, Joëlle, additional, McGuire, Brett A., additional, Merino, Pablo, additional, Micelotta, Elisabetta R., additional, Misselt, Karl, additional, Morse, Jon A., additional, Mulas, Giacomo, additional, Neelamkodan, Naslim, additional, Ohsawa, Ryou, additional, Omont, Alain, additional, Paladini, Roberta, additional, Elisabetta Palumbo, Maria, additional, Pathak, Amit, additional, Pendleton, Yvonne J., additional, Petrignani, Annemieke, additional, Pino, Thomas, additional, Puga, Elena, additional, Rangwala, Naseem, additional, Rapacioli, Mathias, additional, Ricca, Alessandra, additional, Roman-Duval, Julia, additional, Roser, Joseph, additional, Roueff, Evelyne, additional, Rouillé, Gaël, additional, Salama, Farid, additional, Sales, Dinalva A., additional, Sandstrom, Karin, additional, Sarre, Peter, additional, Sciamma-O’Brien, Ella, additional, Sellgren, Kris, additional, Shannon, Matthew J., additional, Shenoy, Sachindev S., additional, Teyssier, David, additional, Thomas, Richard D., additional, Togi, Aditya, additional, Verstraete, Laurent, additional, Witt, Adolf N., additional, Wootten, Alwyn, additional, Ysard, Nathalie, additional, Zettergren, Henning, additional, Zhang, Yong, additional, Zhang, Ziwei E., additional, and Zhen, Junfeng, additional

Published
2022
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19. Photochemistry of PAH in water ice and of PAH:water complexes. Reaction mechanisms and astrophysical implications

Author

Noble, Jennifer, Michoulier, Eric, Aupetit, Christelle, Jouvet, Christophe, Toubin, Céline, Simon, Aude, Moudens, Audrey, Mascetti, Joëlle, Institut des Sciences Moléculaires (ISM), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Physico-Chimie Moléculaire Théorique (PCMT), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Modélisation, Agrégats, Dynamique (LCPQ) (MAD), Laboratoire de Chimie et Physique Quantiques (LCPQ), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), LERMA Cergy (LERMA), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris-Seine-Université Paris-Seine-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), ANR-13-BS08-0005,PARCS,Réactivité des PAH en matrices cryogéniques et sur la glace(2013), Vallet, Valérie, Blanc 2013 - Réactivité des PAH en matrices cryogéniques et sur la glace - - PARCS2013 - ANR-13-BS08-0005 - Blanc 2013 - VALID, Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Université Sciences et Technologies - Bordeaux 1-Université Montesquieu - Bordeaux 4-Institut de Chimie du CNRS (INC), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)

Subjects
[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], ComputingMilieux_MISCELLANEOUS, [PHYS.PHYS.PHYS-CHEM-PH] Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]
Abstract

International audience

Published
2017

20. Photochemistry of water:PAH complexes and ice mixtures: the role of molecular orientation in reactivity

Author

Noble, Jennifer, Michoulier, Eric, Aupetit, Christelle, Jouvet, Christophe, Toubin, Céline, Simon, Aude, Moudens, Audrey, Mascetti, Joëlle, Institut des Sciences Moléculaires (ISM), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Physico-Chimie Moléculaire Théorique (PCMT), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Modélisation, Agrégats, Dynamique (LCPQ) (MAD), Laboratoire de Chimie et Physique Quantiques (LCPQ), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), LERMA Cergy (LERMA), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris-Seine-Université Paris-Seine-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), ANR-13-BS08-0005,PARCS,Réactivité des PAH en matrices cryogéniques et sur la glace(2013), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Vallet, Valérie, Blanc 2013 - Réactivité des PAH en matrices cryogéniques et sur la glace - - PARCS2013 - ANR-13-BS08-0005 - Blanc 2013 - VALID, Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Université Sciences et Technologies - Bordeaux 1-Université Montesquieu - Bordeaux 4-Institut de Chimie du CNRS (INC), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse)

Subjects
[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], ComputingMilieux_MISCELLANEOUS, [PHYS.PHYS.PHYS-CHEM-PH] Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]
Abstract

International audience

Published
2016

21. Photochemistry of Fe:H2O Adducts in Argon Matrixes: A Combined Experimental and Theoretical Study in the Mid-IR and UV–Visible Regions

Author

Deguin, Vincent, Mascetti, Joëlle, Simon, Aude, Ben Amor, Nadia, Aupetit, Christian, Latournerie, Sandra, and Noble, Jennifer A.

Abstract

The photochemistry of Fe:H2O adducts is of interest in fields as diverse as catalysis and astrochemistry. Industrially, iron can be used as a catalyst to convert H2O to H2, whereas in the interstellar medium it may be an important component of dust grains, influencing the chemistry on their icy surfaces. This study consisted of the deposition and spectral characterization of binary systems of atomic iron with H2O in cryogenic argon matrixes. In this way, we were able to obtain information about the interaction of the two species; we observed the formation of adducts of iron monomers and dimers with water molecules in the mid-IR and UV–visible spectral domains. Upon irradiation with a UV radiation source, the iron species were inserted into the water molecules to form HFeOH and HFe2OH, leading in some cases to the formation of FeO possibly accompanied by the production of H2. DFT and correlated multireference wave function calculations confirmed our attributions. This combination of IR and UV–visible spectroscopy with theoretical calculations allowed us to determine, for the first time, the spectral characteristics of iron adducts and their photoproducts in the UV–visible and in the OH stretching region of the mid-IR domain.

Published
2024
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26. Modélisation de l’adsorption et de la spectroscopie de HAPs à la surface de la glace interstellaire

Author

Michoulier, Eric, Simon, Aude, Noble, Jennifer, Mascetti, Joëlle, Toubin, Céline, Physico-Chimie Moléculaire Théorique (PCMT), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Modélisation, Agrégats, Dynamique (LCPQ) (MAD), Laboratoire de Chimie et Physique Quantiques (LCPQ), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Institut des Sciences Moléculaires (ISM), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), ANR-13-BS08-0005,PARCS,Réactivité des PAH en matrices cryogéniques et sur la glace(2013), Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Université Sciences et Technologies - Bordeaux 1-Université Montesquieu - Bordeaux 4-Institut de Chimie du CNRS (INC), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), and Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2016

28. Perturbation of the Surface of Amorphous Solid Water by the Adsorption of Polycyclic Aromatic Hydrocarbons

Author

Michoulier, Eric, Toubin, Céline, Simon, Aude, Mascetti, Joëlle, Aupetit, Christian, and Noble, Jennifer A.

Abstract

This joint theoretical and experimental study establishes that the adsorption of polycyclic aromatic hydrocarbons (PAHs) onto the amorphous ice surface provokes a broadening and redshift of the “dangling” OH (dOH) ice spectral feature, the redshift increasing with PAH size up to ∼85 cm–1. It also reveals that, in certain interaction configurations, adsorption induces substantial reorganization of the hydrogen-bonding network at the ice surface. Comparison with experiments validates the novel theoretical methodology relying on the density functional-based tight binding approach, which offers a compromise between the system size and accuracy, enabling a wide sampling of surface structures. Applied in an astrophysical context, this study suggests that widening of the dOH feature by adsorption of aromatic molecules could explain its absence heretofore in observational ice spectra, offering hope that future missions with higher sensitivity will verify its presence or absence in dense regions.

Published
2020
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29. Ultrafast electronic relaxations from the S3 state of pyrene.

Author

Noble, Jennifer A., Aupetit, Christian, Descamps, Dominique, Petit, Stéphane, Simon, Aude, Mascetti, Joëlle, Ben Amor, Nadia, and Blanchet, Valérie

Abstract

The ultrafast relaxation occurring in pyrene upon excitation at 4.68 eV was studied in a supersonic gas-jet fs pump–probe experiment. Mass spectrometry and velocity map imaging of photoelectrons produced by probing via multiphoton ionisation at 800 nm reveal that the initially prepared wave packet exhibits a fast relaxation (＜80 fs), followed by a slower one of 200 fs. By comparing the propensity rules of photoionisation observed at one color with ab initio calculations, we tentatively assign these two timescales to a first internal conversion to the dark bB3g state followed by a second one to the long lived aB2u first excited state. Vertical excitation energies determined using ab initio Multi-State Complete Active Space 2nd order Perturbation Theory (MS-CASPT2), as well as oscillator strengths between several electronic states, are reported. [ABSTRACT FROM AUTHOR]

Published
2019
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30. Effets thermiques de la capture de co2 par des adsorbants solides : quelques approches par traitement d'images IR

Author

BENEVIDES, Ferreira, JOSE, Flavio, PRADERE, Christophe, Jolly, Julien, Le Bourdon, Gwénaëlle, MASCETTI, Joëlle, Pavageau, Bertrand, Servant, Laurent, Service irevues, irevues, and Association Française de Mécanique

Subjects
adsorption CO2, thermographie IR, transfert de chaleur, [PHYS.MECA]Physics [physics]/Mechanics [physics], [PHYS.MECA] Physics [physics]/Mechanics [physics], estimation chaleur d’adsorption
Abstract

Colloque avec actes et comité de lecture. Internationale.; International audience; Nous étudions par thermographie infrarouge les mécanismes de capture de CO2 (la capture par l’adsorption de CO2 gazeux sur divers types de substrats poreux) afin de mieux cerner les mécanismes physico-chimiques qui pilotent l’interaction CO2-surface. Pour pouvoir, dans l’avenir, mettre au point un procédé efficace de captage de CO2 en post-combustion, il est nécessaire de quantifier l’énergie d’adsorption d’un gaz sur un solide ( processus exothermique). La chaleur dégagée (chaleur d’adsorption) est un paramètre clé pour le choix des matériaux et pour la conception des procédés de captage. La thermographie infrarouge est utilisée pour détecter le champ de température de la surface du substrat au cours de l’adsorption de CO2, tout d’abord en couche mince. Des modèles analytiques de transfert de chaleur ont été développés afin d’évaluer la chaleur dégagée et d’estimer à l’aide d’une technique inverse la chaleur d’adsorption. La principale originalité de notre méthode est d’estimer les pertes de chaleur directement à partir de la chaleur dissipée pendant le processus d’adsorption. Ceci est possible grâce à un calcul de corrélation entre la température expérimentale et sa dérivée temporelle dans la zone de données expérimentales où aucun terme source lié au dégagement de chaleur n’intervient. Les pertes de chaleur ainsi estimées permettent ensuite de calculer à posteriori le flux de chaleur dégagé pour finalement estimer la chaleur d’adsorption. L’intérêt de la thermographie IR est aussi de pouvoir changer rapidement de configuration et de pouvoir passer de la couche mince au lit de solide adsorbant. Nous présenterons des premiers résultats tentants de relier les données en couche mince à la vitesse de propagation d’un front d’adsorption dans un lit adsorbant aussi observé par thermographie.

Published
2013

31. Photochemistry of Fe:H2O Adducts in Argon Matrixes: A Combined Experimental and Theoretical Study in the Mid-IR and UV-Visible Regions.

Author

Deguin, Vincent, Mascetti, Joëlle, Simon, Aude, Amor, Nadia Ben, Aupetit, Christian, Latournerie, Sandra, and Noble, Jennifer A.

Subjects
*PHOTOCHEMISTRY, *ARGON, *CHEMISTRY experiments, *ULTRAVIOLET spectrometry, *ASTROCHEMISTRY
Abstract

The photochemistry of Fe:H2O adducts is of interest in fields as diverse as catalysis and astrochemistry. Industrially, iron can be used as a catalyst to convert H2O to H2, whereas in the interstellar medium it may be an important component of dust grains, influencing the chemistry on their icy surfaces. This study consisted of the deposition and spectral characterization of binary systems of atomic iron with H2O in cryogenic argon matrixes. In this way, we were able to obtain information about the interaction of the two species; we observed the formation of adducts of iron monomers and dimers with water molecules in the mid-IR and UV-visible spectral domains. Upon irradiation with a UV radiation source, the iron species were inserted into the water molecules to form HFeOH and HFe2OH, leading in some cases to the formation of FeO possibly accompanied by the production of H2. DFT and correlated multireference wave function calculations confirmed our attributions. This combination of IR and UV-visible spectroscopy with theoretical calculations allowed us to determine, for the first time, the spectral characteristics of iron adducts and their photoproducts in the UV-visible and in the OH stretching region of the mid-IR domain. [ABSTRACT FROM AUTHOR]

Published
2018
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33. Electronic Spectroscopy of Protonated 1-Aminopyrene in a Cold Ion Trap.

Author

Noble, Jennifer Anna, Dedonder ‐ Lardeux, Claude, Mascetti, Joëlle, and Jouvet, Christophe

Subjects
PROTON transfer reactions, PYRENE, ION traps, ELECTRON spectroscopy, AMINO group
Abstract

In aromatic systems that contain an amino group, there is competition between protonation on a carbon atom of the skeleton and protonation on the amino group. Herein, we studied the photofragmentation of protonated 1-aminopyrene in a cold ion trap and mainly observed the protonated amino tautomer, which led to fragmentation pathways through the loss of H or NH3 groups. Several excited states were assigned, among which the fourth excited state showed broadened bands, thus indicating a fast decay that was attributed to the presence of a πσ* charge-transfer state by comparison of the experimental results with ab initio calculations. We deduced the πσ* transition energies in protonated aromatic amino compounds of increasing size directly from the ionization potentials of the neutral aromatic unsubstituted molecules. Tautomers that were protonated on a carbon atom of the pyrene skeleton were also weakly observed, and we showed that two tautomers that were protonated on a carbon atom of the aromatic ring could be distinguished by using electronic spectroscopy. [ABSTRACT FROM AUTHOR]

Published
2017
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47. Mechanism of Formation of Peroxocarbonates RhOOC(O)O(Cl)(P)3 and Their Reactivity as Oxygen Transfer Agents Mimicking Monooxygenases. The First Evidence of CO2 Insertion into the O−O Bond of Rh(η2-O2) Complexes

Author

Aresta, Michele, primary, Tommasi, Immacolata, additional, Quaranta, Eugenio, additional, Fragale, Carlo, additional, Mascetti, Joëlle, additional, Tranquille, Michel, additional, Galan, Florence, additional, and Fouassier, Monique, additional

Published
1996
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50. On the chemical reactions of carbon dioxide isoelectronic molecules CS2 and OCS with 1-butyl-3-methylimidazolium acetate.

Author

Isabel Cabaço, M., Besnard, Marcel, Chávez, Fabián Vaca, Pinaud, Noël, Sebastião, Pedro J., Coutinho, João A. P., Mascetti, Joëlle, and Danten, Yann

Subjects
CHEMICAL reactions, MOLECULES, ACETATES, CARBON dioxide, OXIDES
Abstract

Raman and NMR spectroscopies show that CS2 and OCS react spontaneously with 1-butyl-3-methylimidazolium acetate [C4mim] [Ac] in the liquid phase. The formation of [C4mim] CO2, [C4mim] COS, CH3COS− and gaseous CO2 and OCS in both systems demonstrates that the anion plays an unexpected role not observed in the CO2–[C4mim] [Ac] reaction. [ABSTRACT FROM AUTHOR]

Published
2013
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