Zobrazeno 1 - 10
of 669
pro vyhledávání: '"G. Pineau"'
Publikováno v:
A&A 688, A96 (2024)
Context: Atomic and molecular lines in galaxies offer insights into energy budgets and feedback mechanisms. Aims: This study establishes a new framework for interpreting these lines and deducing energy budgets from observations. Methods: Atomic and m
Externí odkaz:
http://arxiv.org/abs/2405.02058
Publikováno v:
A&A (2023), 675, A86
(Abridged) H2 is the most abundant molecule in the Universe. Thanks to its widely spaced energy levels, it predominantly lights up in warm gas, T > 100 K, such as shocked regions, and it is one of the key targets of JWST observations. These include s
Externí odkaz:
http://arxiv.org/abs/2307.04178
Publikováno v:
A&A 664, A118 (2022)
Most simulations of outflow feedback on star formation are based on the assumption that outflows are driven by a wide angle "X-wind," rather than a narrow jet. However, the arguments initially raised against pure jet-driven flows were based on steady
Externí odkaz:
http://arxiv.org/abs/2204.05850
Autor:
Olivares, V., Salome, P., Hamer, S. L., Combes, F., Gaspari, M., Kolokythas, K., O'Sullivan, E., Beckmann, R. S., Babul, A., Polles, F. L., Lehnert, M., Loubser, S. I., Donahue, M., Gendron-Marsolais, M. -L., Lagos, P., Forets, G. Pineau des, Godard, B., Rose, T., Tremblay, G., Ferland, G., Guillard, P.
Publikováno v:
A&A 666, A94 (2022)
The origin of the cold gas in central galaxies in groups is still a matter of debate. We present Multi-Unit Spectroscopic Explorer (MUSE) observations of 18 optically selected local Brightest Group Galaxies (BGGs) to study the kinematics and distribu
Externí odkaz:
http://arxiv.org/abs/2201.07838
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 487, Issue 3, p.3392-3403 (2019)
The nuclear-spin chemistry of interstellar water is investigated using the University of Grenoble Alpes Astrochemical Network (UGAN). This network includes reactions involving the different nuclear-spin states of the hydrides of carbon, nitrogen, oxy
Externí odkaz:
http://arxiv.org/abs/2201.02068
Publikováno v:
A&A 658, A168 (2022)
The abundance of volatile sulfur in dense clouds is long-standing problem in studies of the physics and chemistry of star-forming regions. Sulfur is an important species because its low ionization potential may possibly make it an important charge ca
Externí odkaz:
http://arxiv.org/abs/2112.01076
Autor:
Polles, F. L., Salomé, P., Guillard, P., Godard, B., Forêts, G. Pineau des, Olivares, V., Beckmann, R. S., Canning, R. E. A., Combes, F., Dubois, Y., Edge, A. C., Fabian, A. C., Ferland, G. J., Hamer, S. L., Lehnert, M. D.
The excitation of the filamentary gas structures surrounding giant elliptical galaxies at the center of cool-core clusters, a.k.a BCGs (brightest cluster galaxies), is key to our understanding of active galactic nucleus feedback, and of the impact of
Externí odkaz:
http://arxiv.org/abs/2103.09842
Autor:
Guillard, P., Appleton, P. N, Boulanger, F., Shull, J. M., Lehnert, M. D., Forets, G. Pineau des, Falgarone, E., Cluver, M. E., Xu, C. K., Gallagher, S. C., Duc, P. A.
We present Hubble Space Telescope Cosmic Origin Spectrograph (COS) UV line spectroscopy and integral-field unit (IFU) observations of the intra-group medium in Stephan's Quintet (SQ). SQ hosts a 30 kpc long shocked ridge triggered by a galaxy collisi
Externí odkaz:
http://arxiv.org/abs/2102.06843
Publikováno v:
A&A 643, A101 (2020)
Shocks are ubiquitous in the interstellar and intergalactic media, where their chemical and radiative signatures reveal the physical conditions in which they arise. Detailed astrochemical models of shocks at all velocities are necessary to understand
Externí odkaz:
http://arxiv.org/abs/2010.01042
Publikováno v:
A&A 643, A76 (2020)
Measurements of the nitrogen isotopic ratio in Solar System comets show a constant value, ~140, which is three times lower than the protosolar ratio, a highly significant difference that remains unexplained. Observations of static starless cores at e
Externí odkaz:
http://arxiv.org/abs/2009.06393