8 results on '"Chainais, Pierre"'
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2. Neural network-based emulation of interstellar medium models
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Palud, Pierre, primary, Einig, Lucas, additional, Le Petit, Franck, additional, Bron, Émeric, additional, Chainais, Pierre, additional, Chanussot, Jocelyn, additional, Pety, Jérôme, additional, Thouvenin, Pierre-Antoine, additional, Languignon, David, additional, Bešlić, Ivana, additional, Santa-Maria, Miriam G., additional, Orkisz, Jan H., additional, Ségal, Léontine E., additional, Zakardjian, Antoine, additional, Bardeau, Sébastien, additional, Gerin, Maryvonne, additional, Goicoechea, Javier R., additional, Gratier, Pierre, additional, Guzman, Viviana V., additional, Hughes, Annie, additional, Levrier, François, additional, Liszt, Harvey S., additional, Le Bourlot, Jacques, additional, Roueff, Antoine, additional, and Sievers, Albrecht, additional
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- 2023
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3. Deep learning denoising by dimension reduction: Application to the ORION-B line cubes
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Einig, Lucas, primary, Pety, Jérôme, additional, Roueff, Antoine, additional, Vandame, Paul, additional, Chanussot, Jocelyn, additional, Gerin, Maryvonne, additional, Orkisz, Jan H., additional, Palud, Pierre, additional, Santa-Maria, Miriam G., additional, de Souza Magalhaes, Victor, additional, Bešlić, Ivana, additional, Bardeau, Sébastien, additional, Bron, Emeric, additional, Chainais, Pierre, additional, Goicoechea, Javier R., additional, Gratier, Pierre, additional, Guzmán, Viviana V., additional, Hughes, Annie, additional, Kainulainen, Jouni, additional, Languignon, David, additional, Lallement, Rosine, additional, Levrier, François, additional, Lis, Dariusz C., additional, Liszt, Harvey S., additional, Le Bourlot, Jacques, additional, Le Petit, Franck, additional, Öberg, Karin, additional, Peretto, Nicolas, additional, Roueff, Evelyne, additional, Sievers, Albrecht, additional, Thouvenin, Pierre-Antoine, additional, and Tremblin, Pascal, additional
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- 2023
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4. Gas kinematics around filamentary structures in the Orion B cloud
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Gaudel, Mathilde, primary, Orkisz, Jan H., additional, Gerin, Maryvonne, additional, Pety, Jérôme, additional, Roueff, Antoine, additional, Marchal, Antoine, additional, Levrier, François, additional, Miville-Deschênes, Marc-Antoine, additional, Goicoechea, Javier R., additional, Roueff, Evelyne, additional, Le Petit, Franck, additional, de Souza Magalhaes, Victor, additional, Palud, Pierre, additional, Santa-Maria, Miriam G., additional, Vono, Maxime, additional, Bardeau, Sébastien, additional, Bron, Emeric, additional, Chainais, Pierre, additional, Chanussot, Jocelyn, additional, Gratier, Pierre, additional, Guzman, Viviana, additional, Hughes, Annie, additional, Kainulainen, Jouni, additional, Languignon, David, additional, Le Bourlot, Jacques, additional, Liszt, Harvey, additional, Öberg, Karin, additional, Peretto, Nicolas, additional, Sievers, Albrecht, additional, and Tremblin, Pascal, additional
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- 2023
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5. Tracers of the ionization fraction in dense and translucent gas
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Bron, Emeric, primary, Roueff, Evelyne, additional, Gerin, Maryvonne, additional, Pety, Jérôme, additional, Gratier, Pierre, additional, Le Petit, Franck, additional, Guzman, Viviana, additional, Orkisz, Jan H., additional, de Souza Magalhaes, Victor, additional, Gaudel, Mathilde, additional, Vono, Maxime, additional, Bardeau, Sébastien, additional, Chainais, Pierre, additional, Goicoechea, Javier R., additional, Hughes, Annie, additional, Kainulainen, Jouni, additional, Languignon, David, additional, Le Bourlot, Jacques, additional, Levrier, François, additional, Liszt, Harvey, additional, Öberg, Karin, additional, Peretto, Nicolas, additional, Roueff, Antoine, additional, and Sievers, Albrecht, additional
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- 2020
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6. Quantitative inference of the H2 column densities from 3 mm molecular emission: case study towards Orion B
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Gratier, Pierre, primary, Pety, Jérôme, additional, Bron, Emeric, additional, Roueff, Antoine, additional, Orkisz, Jan H., additional, Gerin, Maryvonne, additional, de Souza Magalhaes, Victor, additional, Gaudel, Mathilde, additional, Vono, Maxime, additional, Bardeau, Sébastien, additional, Chanussot, Jocelyn, additional, Chainais, Pierre, additional, Goicoechea, Javier R., additional, Guzmán, Viviana V., additional, Hughes, Annie, additional, Kainulainen, Jouni, additional, Languignon, David, additional, Le Bourlot, Jacques, additional, Le Petit, Franck, additional, Levrier, François, additional, Liszt, Harvey, additional, Peretto, Nicolas, additional, Roueff, Evelyne, additional, and Sievers, Albrecht, additional
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- 2020
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7. C18O,13CO, and12CO abundances and excitation temperatures in the Orion B molecular cloud
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Roueff, Antoine, primary, Gerin, Maryvonne, additional, Gratier, Pierre, additional, Levrier, François, additional, Pety, Jérôme, additional, Gaudel, Mathilde, additional, Goicoechea, Javier R., additional, Orkisz, Jan H., additional, de Souza Magalhaes, Victor, additional, Vono, Maxime, additional, Bardeau, Sébastien, additional, Bron, Emeric, additional, Chanussot, Jocelyn, additional, Chainais, Pierre, additional, Guzman, Viviana V., additional, Hughes, Annie, additional, Kainulainen, Jouni, additional, Languignon, David, additional, Le Bourlot, Jacques, additional, Le Petit, Franck, additional, Liszt, Harvey S., additional, Marchal, Antoine, additional, Miville-Deschênes, Marc-Antoine, additional, Peretto, Nicolas, additional, Roueff, Evelyne, additional, and Sievers, Albrecht, additional
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- 2020
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8. Gas kinematics around filamentary structures in the Orion B cloud
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Mathilde Gaudel, Jan H. Orkisz, Maryvonne Gerin, Jérôme Pety, Antoine Roueff, Antoine Marchal, François Levrier, Marc-Antoine Miville-Deschênes, Javier R. Goicoechea, Evelyne Roueff, Franck Le Petit, Victor de Souza Magalhaes, Pierre Palud, Miriam G. Santa-Maria, Maxime Vono, Sébastien Bardeau, Emeric Bron, Pierre Chainais, Jocelyn Chanussot, Pierre Gratier, Viviana Guzman, Annie Hughes, Jouni Kainulainen, David Languignon, Jacques Le Bourlot, Harvey Liszt, Karin Öberg, Nicolas Peretto, Albrecht Sievers, Pascal Tremblin, Agence Nationale de la Recherche (France), Centre National de la Recherche Scientifique (France), Centre National D'Etudes Spatiales (France), l'Observatoire de Paris, Ministerio de Ciencia, Innovación y Universidades (España), Swedish Research Council, Orkisz, Jan H., Pety, Jérôme, Roueff, Antoine, Marchal, Antoine, Levrier, François, Miville-Deschênes, Marc-Antoine, Goicoechea, Javier R., Roueff, Evelyne, Santa-Maria, Miriam G., Bron, Emeric, Chainais, Pierre, Chanussot, Jocelyn, Gratier, Pierre, Guzman, Viviana, Le Bourlot,Jacques, and Liszt, Harvey
- Subjects
ISM: kinematics and dynamics ,HII regions ,ISM: individual objects: Orion B ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,Stars: formation ,FOS: Physical sciences ,Astronomy and Astrophysics ,ISM: clouds ,Astrophysics - Astrophysics of Galaxies ,Radio lines: ISM - Abstract
39 pags., 78 figs., 2 tabs. 6 apps., Understanding the initial properties of star-forming material and how they affect the star formation process is key. From an observational point of view, the feedback from young high-mass stars on future star formation properties is still poorly constrained. In the framework of the IRAM 30m ORION-B large program, we obtained observations of the translucent and moderately dense gas, which we used to analyze the kinematics over a field of 5 deg^2 around the filamentary structures. We used the ROHSA algorithm to decompose and de-noise the C18O(1-0) and 13CO(1-0) signals by taking the spatial coherence of the emission into account. We produced gas column density and mean velocity maps to estimate the relative orientation of their spatial gradients. We identified three cloud velocity layers at different systemic velocities and extracted the filaments in each velocity layer. The filaments are preferentially located in regions of low centroid velocity gradients. By comparing the relative orientation between the column density and velocity gradients of each layer from the ORION-B observations and synthetic observations from 3D kinematic toy models, we distinguish two types of behavior in the dynamics around filaments: (i) radial flows perpendicular to the filament axis that can be either inflows (increasing the filament mass) or outflows and (ii) longitudinal flows along the filament axis. The former case is seen in the Orion B data, while the latter is not identified. We have also identified asymmetrical flow patterns, usually associated with filaments located at the edge of an HII region. This is the first observational study to highlight feedback from HII regions on filament formation and, thus, on star formation in the Orion B cloud. This simple statistical method can be used for any molecular cloud to obtain coherent information on the kinematics., This work was supported in part by the French Agence Nationale de la Recherche through the DAOISM grant ANR21-CE31-0010 and by the Programme National “Physique et Chimie du Milieu Interstellaire” (PCMI) of CNRS/INSU with INC/INP, co-funded by CEA and CNES. We thank “le centre Jules Jensen” from Observatoire de Paris for its hospitality during the workshops devoted to this project. This research has made use of data from the Herschel Gould Belt Survey (HGBS) project (http: //gouldbelt-herschel.cea.fr). The HGBS is a Herschel Key Programme jointly carried out by SPIRE Specialist Astronomy Group 3 (SAG 3), scientists of several institutes in the PACS Consortium (CEA Saclay, INAF-IFSI Rome and INAF-Arcetri, KU Leuven, MPIA Heidelberg), and scientists of the Herschel Science Center (HSC). J.R.G. and M.G.S.M. thank the Spanish MCIYU for funding support under grant PID2019-106110GB-I00. J.O. acknowledges funding from the Swedish Research Council, grant No. 2017-03864.
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- 2023
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