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A far-ultraviolet–driven photoevaporation flow observed in a protoplanetary disk

O. Berné, É. Habart, E. Peeters, I. Schroetter, A. Canin, A. Sidhu, R. Chown, E. Bron, T. J. Haworth, P. D. Klaassen, B. Trahin, D. Van De Putte, F. Alarcón, M. Zannese, A. Abergel, E. A. Bergin, J. Bernard-Salas, C. Boersma, J. Cami, S. Cuadrado, E. Dartois, D. Dicken, M. Elyajouri, A. Fuente, J. R. Goicoechea, K. D. Gordon, L. Issa, C. Joblin, O. Kannavou, B. Khan, O. Lacinbala, D. Languignon, R. Le Gal, A. Maragkoudakis, R. Meshaka, Y. Okada, T. Onaka, S. Pasquini, M. W. Pound, M. Robberto, M. Röllig, B. R. Schefter, T. Schirmer, T. Simmer, B. Tabone, A. G. G. M. Tielens, S. Vicente, M. G. Wolfire, PDRs4All Team, I. Aleman, L. Allamandola, R. Auchettl, G. A. Baratta, C. Baruteau, S. Bejaoui, P. P. Bera, J. H. Black, F. Boulanger, J. Bouwman, B. Brandl, P. Brechignac, S. Brünken, M. Buragohain, A. Burkhardt, A. Candian, S. Cazaux, J. Cernicharo, M. Chabot, S. Chakraborty, J. Champion, S. W. J. Colgan, I. R. Cooke, A. Coutens, N. L. J. Cox, K. Demyk, J. Donovan Meyer, C. Engrand, S. Foschino, P. García-Lario, L. Gavilan, M. Gerin, M. Godard, C. A. Gottlieb, P. Guillard, A. Gusdorf, P. Hartigan, J. He, E. Herbst, L. Hornekaer, C. Jäger, E. Janot-Pacheco, M. Kaufman, F. Kemper, S. Kendrew, M. S. Kirsanova, C. Knight, S. Kwok, Á. Labiano, T. S. -Y. Lai, T. J. Lee, B. Lefloch, F. Le Petit, A. Li, H. Linz, C. J. Mackie, S. C. Madden, J. Mascetti, B. A. McGuire, P. Merino, E. R. Micelotta, J. A. Morse, G. Mulas, N. Neelamkodan, R. Ohsawa, R. Paladini, M. E. Palumbo, A. Pathak, Y. J. Pendleton, A. Petrignani, T. Pino, E. Puga, N. Rangwala, M. Rapacioli, A. Ricca, J. Roman-Duval, E. Roueff, G. Rouillé, F. Salama, D. A. Sales, K. Sandstrom, P. Sarre, E. Sciamma-O'Brien, K. Sellgren, M. J. Shannon, A. Simonnin, S. S. Shenoy, D. Teyssier, R. D. Thomas, A. Togi, L. Verstraete, A. N. Witt, A. Wootten, N. Ysard, H. Zettergren, Y. Zhang, Z. E. Zhang, J. Zhen

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 photodissociation regions (PDRs) on the surfaces of protoplanetary disks around low-mass stars, which affects planet formation within the disks. We report James Webb Space Telescope and Atacama Large Millimeter Array observations of a FUV-irradiated protoplanetary disk in the Orion Nebula. Emission lines are detected from the PDR; modeling their kinematics and excitation allowed us to constrain the physical conditions within the gas. We quantified the mass-loss rate induced by the FUV irradiation and found that 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.

Keywords
Astrophysics - Astrophysics of Galaxies

Science
Volume 383, Number 6686, Page 988
2024 March

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia