NUAGES is a research group of the Star-formation and Interstellar Medium lab at CEA Saclay. The acronym NUAGES stands for Nearby Universe Agents of Galaxy Evolution Studies. The group focuses on the study of (nearby) galaxies with interest in topics related to the interstellar dust and gas, heating and cooling processes, ISM composition and structure, low-metallicity conditions, chemical evolution of galaxies. Our projects exploit multi-wavelength observations - with an accent on IR-mm facilities such as Spitzer, AKARI, Herschel, SOFIA, IRAM, APEX, ALMA - as well as spectral synthesis models of the dust and gas.
DUST MODELING
We have expertise in dust physics and dust spectral energy distribution modeling with our in-house state-of-the-art hierarchical bayesian dust model HERBIE (developped by F. Galliano) which is applied on spatially-resolved scales and globally in galaxies.
GAS MODELING
We have expertise in the gas physics and radiative transfert modeling using, in particular, the photoionization and photodissociation region codes Cloudy and Meudon PDR. We have built grids of models to interpret gas emission on spatially-resolved as well as global scales.
CURRENT OBSERVING EFFORTS
Besides exploiting the rich archives of past telescopes, we are proactive in acquiring, for the Magellanic Clouds and nearby galaxies, far-IR observations with the instruments GREAT and FIFI-LS onboard the SOFIA observatory and submillimeter observations with ground-based observatories such as ALMA or IRAM. We are also preparing for the JWST.
DUSTPEDIA
Dustpedia is a European project that aims to provide multi-wavelength photometry of all extended nearby galaxies observed with Herschel, and tools to model and interpret their dust properties. It is a FP7 collaboration between CEA, IAS, Athens, Cardiff, Ghent.
Website: http://dustpedia.com/index.php
DWARF GALAXY SURVEY
The Dwarf Galaxy Survey (DGS) is a Herschel key program led by Suzanne Madden that observed 50 nearby low-metallicity galaxies in photometry and spectroscopy to study the properties of their star-forming interstellar medium.
Website: http://irfu.cea.fr/dap/Phocea/Vie_des_labos/Ast/ast_technique.php?id_ast=4602
MEGA-SAGE
Mega-SAGE in an international collaboration led by Margaret Meixner, based on Spitzer programs follow-up with Herschel. Its aim is to study the properties of young and evolved stars and of the ISM in the Large and Samll Magellanic Clouds.
Website: http://sage.stsci.edu/index.php
PEOPLE
ASSOCIATED MEMBERS
PREVIOUS MEMBERS (POSTDOCS AND PHD STUDENTS):
- Diane Cormier: MSCA fellow at CEA in 2017-2019.
- Sophia Lianou: Postdoc at CEA in 2015-2018.
- Fiorella Polles: PhD student at CEA in 2014-2017. Now postdoc at LERMA Paris Observatory.
- Min-Young Lee: Postdoc at CEA in 2013-2017. Now staff in KASI.
- Oskar Karczewski: Postdoc at CEA in 2014-2017.
- Mélanie Chevance: PhD student at CEA in 2013-2016. Now postdoc at the University of Heidelberg.
- Ronin Wu: Postdoc at CEA in 2010-2014. Now at Iris.ai.
- Aurélie Rémy-Ruyer: PhD student at CEA in 2010-2013.
- Sacha Hony: Postdoc at CEA in 2006-2012.
PUBLICATIONS
This is a list of first-author refereed publications from members of the group since 2017.
- D. Cormier, N. P. Abel, S. Hony, et al., 2019, A&A in press
"The Herschel Dwarf Galaxy Survey: II. Physical conditions, origin of [CII] emission, and porosity of the multiphase low-metallicity ISM" - F. L. Polles, S. C. Madden, V. Lebouteiller, et al., 2019, A&A, 622, 119
"Modeling ionized gas in low-metallicity environments: the Local Group dwarf galaxy IC10" - F. Galliano, 2018, MNRAS, 476, 1445
"A Dust spectral energy distribution model with hierarchical Bayesian inference. I. Formalism & benchmarking" - D. Cormier, F. Bigiel, M. J. Jimenez-Donaire, et al., 2018, MNRAS, 475, 3909
"Full-disc 13CO(1-0) mapping of nearby galaxies of the EMPIRE survey and the CO-to-H2 conversion factor" - F. Galliano, M. Galametz & A. Jones, 2018, ARAA, 56, 673
"The Interstellar dust properties of nearby galaxies" (review) - V. Lebouteiller, D. Pequignot, D. Cormier, et al., 2017, A&A, 602, 45
"Neutral gas heating by X-rays in primitive galaxies: Infrared observations of the blue compact dwarf I Zw 18 with Herschel" - D. Cormier, G. Bendo, S. Hony, et al., 2017, MNRAS, 468, 87
"New ALMA constraints on the star-forming interstellar medium at low metallicity: a 50pc view of the blue compact dwarf galaxy SBS 0335-052"
• Formation des Etoiles et du Milieu Interstellaire • Star Formation and Interstellar Medium
• DGS • HERSCHEL • Herschel/Pacs • Herschel/Spire • Instruments
