Toward a robust physical and chemical characterization of heterogeneous lines of sight: The case of the Horsehead nebula

Autor: Ségal, Léontine, Roueff, Antoine, Pety, Jérôme, Gerin, Maryvonne, Roueff, Evelyne, Goicoechea, R. Javier, Bešlic, Ivana, Coud'e, Simon, Einig, Lucas, Mazurek, Helena, Orkisz, H. Jan, Palud, Pierre, Santa-Maria, G. Miriam, Zakardjian, Antoine, Bardeau, S'ebastien, Bron, Emeric, Chainais, Pierre, Demyk, Karine, Magalhaes, Victor de Souza, Gratier, Pierre, Guzman, V. Viviana, Hughes, Annie, Languignon, David, Levrier, François, Bourlot, Jacques Le, Petit, Franck Le, Lis, C. Dariusz, Liszt, S. Harvey, Peretto, Nicolas, Sievers, Albrecht, Thouvenin, Pierre-Antoine

Dense cold molecular cores/filaments are surrounded by an envelope of translucent gas. Some of the low-J emission lines of CO and HCO$^+$ isotopologues are more sensitive to the conditions either in the translucent environment or in the dense cold on

Externí odkaz: http://arxiv.org/abs/2409.20074

Quantifying the informativity of emission lines to infer physical conditions in giant molecular clouds. I. Application to model predictions

Autor: Einig, Lucas, Palud, Pierre, Roueff, Antoine, Pety, Jérôme, Bron, Emeric, Petit, Franck Le, Gerin, Maryvonne, Chanussot, Jocelyn, Chainais, Pierre, Thouvenin, Pierre-Antoine, Languignon, David, Bešlić, Ivana, Coudé, Simon, Mazurek, Helena, Orkisz, Jan H., Santa-Maria, Miriam G., Ségal, Léontine, Zakardjian, Antoine, Bardeau, Sébastien, Demyk, Karine, Magalhães, Victor de Souza, Goicoechea, Javier R., Gratier, Pierre, Guzmán, Viviana V., Hughes, Annie, Levrier, François, Bourlot, Jacques Le, Lis, Dariusz C., Liszt, Harvey S., Peretto, Nicolas, Roueff, Evelyne, Sievers, Albrecht

Observations of ionic, atomic, or molecular lines are performed to improve our understanding of the interstellar medium (ISM). However, the potential of a line to constrain the physical conditions of the ISM is difficult to assess quantitatively, bec

Externí odkaz: http://arxiv.org/abs/2408.08114

Evaluating the Fairness of Neural Collapse in Medical Image Classification

Autor: Mouheb, Kaouther, Elbatel, Marawan, Klein, Stefan, Bron, Esther E.

Deep learning has achieved impressive performance across various medical imaging tasks. However, its inherent bias against specific groups hinders its clinical applicability in equitable healthcare systems. A recently discovered phenomenon, Neural Co

Externí odkaz: http://arxiv.org/abs/2407.05843

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

Autor: 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., Zhen, Junfeng

Publikováno v: A&A 687, A86 (2024)

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

Externí odkaz: http://arxiv.org/abs/2404.03111

Bias versus variance when fitting multi-species molecular lines with a non-LTE radiative transfer model

Autor: Roueff, Antoine, Pety, Jérôme, Gerin, Maryvonne, Ségal, Léontine, Goicoechea, Javier, Liszt, Harvey, Gratier, Pierre, Bešlić, Ivana, Einig, Lucas, Gaudel, M., Orkisz, Jan, Palud, Pierre, Santa-Maria, Miriam, Magalhaes, Victor de Souza, Zakardjian, Antoine, Bardeau, Sebastien, Bron, Emeric E., Chainais, Pierre, Coudé, Simon, Demyk, Karine, Veloso, Viviana Guzman, Hughes, Annie, Languignon, David, Levrier, François, Lis, Dariusz C, Bourlot, Jacques Le, Petit, Franck Le, Peretto, Nicolas, Roueff, Evelyne, Sievers, Albrecht, Thouvenin, Pierre-Antoine

Robust radiative transfer techniques are requisite for efficiently extracting the physical and chemical information from molecular rotational lines.We study several hypotheses that enable robust estimations of the column densities and physical condit

Externí odkaz: http://arxiv.org/abs/2403.20057