Zobrazeno 1 - 10
of 528
pro vyhledávání: '"Gratier P"'
The specific star-formation rate of star-forming `main sequence' galaxies significantly decreased since z~1.5, due to the decreasing molecular gas fraction and star formation efficiency. However, the radio-infrared (IR) correlation has not changed si
Externí odkaz:
http://arxiv.org/abs/2411.18420
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
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
Publikováno v:
A&A 691, A109 (2024)
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
The study of the chemical composition of the interstellar medium (ISM) requires a strong synergy between laboratory astrophysics, modeling, and observations. In particular, astrochemical models have been developed for decades now and include an incre
Externí odkaz:
http://arxiv.org/abs/2407.15958
Autor:
Kashyap, Parashmoni, Majumdar, Liton, Dutrey, Anne, Guilloteau, Stéphane, Willacy, Karen, Chapillon, Edwige, Teague, Richard, Semenov, Dmitry, Henning, Thomas, Turner, Neal, Sahai, Raghvendra, Kóspál, Ágnes, Coutens, Audrey, Piétu, V., Gratier, Pierre, Ruaud, Maxime, Phuong, N. T., Di Folco, E., Lee, Chin-Fei, Tang, Y. -W.
Resolved molecular line observations are essential for gaining insight into the physical and chemical structure of protoplanetary disks, particularly in cold, dense regions where planets form and acquire their chemical compositions. However, tracing
Externí odkaz:
http://arxiv.org/abs/2407.07238
Autor:
Pety Jérôme, Gerin Maryvonne, Bron Emeric, Gratier Pierre, Orkisz Jan H., Palud Pierre, Roueff Antoine, Einig Lucas, Santa-Maria Miriam G., de Souza Magalhaes Victor, Bardeau Sébastien, Chanussot Jocelyn, Chainais Pierre, Goicoechea Javier R., Guzman Viviana V., Hughes Annie, Kainulainen Jouni, Languignon David, Levrier François, Lis Darek, Liszt Harvey S., Le Bourlot Jacques, Le Petit Franck, Oberg Karin, Peretto Nicolas, Roueff Evelyne, Sievers Albrecht, Thouvenin Pierre-Antoine, Tremblin Pascal
Publikováno v:
EPJ Web of Conferences, Vol 265, p 00048 (2022)
Atoms and molecules have long been thought to be versatile tracers of the cold neutral gas in the universe, from high-redshift galaxies to star forming regions and proto-planetary disks, because their internal degrees of freedom bear the signature of
Externí odkaz:
https://doaj.org/article/16f83695e6ca42bb95b0428757602df7
Autor:
Bron Emeric, Roueff Evelyne, Gerin Maryvonne, Pety Jérôme, Gratier Pierre, Le Petit Franck, Guzman Viviana, Orkisz Jan, de Souza Magalhaes Victor, Gaudel Mathilde, Palud Pierre, Einig Lucas, Bardeau Sébastien, Chainais Pierre, Chanussot Jocelyn, Goicoechea Javier, Hughes Annie, Kainulainen Jouni, Languignon David, Le Bourlot Jacques, Levrier François, Lis Darek, Liszt Harvey, Öberg Karin, Peretto Nicolas, Roueff Antoine, Sievers Albrecht, Thouvenin Pierre-Antoine, Tremblin Pascal
Publikováno v:
EPJ Web of Conferences, Vol 265, p 00023 (2022)
The ionization fraction in neutral interstellar clouds is a key physical parameter controlling multiple physical and chemical processes, and varying by orders of magnitude from the UV irradiated surface of the cloud to its cosmic-ray dominated centra
Externí odkaz:
https://doaj.org/article/070a7e026c0a4b8f8f0957823754c1f4
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
Autor:
Santa-Maria, M. G., Goicoechea, J. R., Pety, J., Gerin, M., Orkisz, J. H., Petit, F. Le, Einig, L., Palud, P., Magalhaes, V. de Souza, Bešlić, I., Segal, L., Bardeau, S., Bron, E., Chainais, P., Chanussot, J., Gratier, P., Guzmán, V. V., Hughes, A., Languignon, D., Levrier, F., Lis, D. C., Liszt, H. S., Bourlot, J. Le, Oya, Y., Öberg, K., Peretto, N., Roueff, E., Roueff, A., Sievers, A., Thouvenin, P. -A., Yamamoto, S.
Publikováno v:
A&A 679, A4 (2023)
We present 5 deg^2 (~250 pc^2) HCN, HNC, HCO+, and CO J=1-0 maps of the Orion B GMC, complemented with existing wide-field [CI] 492 GHz maps, as well as new pointed observations of rotationally excited HCN, HNC, H13CN, and HN13C lines. We detect anom
Externí odkaz:
http://arxiv.org/abs/2309.03186
Autor:
Palud, Pierre, Einig, Lucas, Petit, Franck Le, Bron, Emeric, Chainais, Pierre, Chanussot, Jocelyn, Pety, Jérôme, Thouvenin, Pierre-Antoine, Languignon, David, Bešlić, Ivana, Santa-Maria, Miriam G., Orkisz, Jan H., Ségal, Léontine E., Zakardjian, Antoine, Bardeau, Sébastien, Gerin, Maryvonne, Goicoechea, Javier R., Gratier, Pierre, Guzman, Viviana V., Hughes, Annie, Levrier, François, Liszt, Harvey S., Bourlot, Jacques Le, Roueff, Antoine, Sievers, Albrecht
Publikováno v:
A&A 678, A198 (2023)
The interpretation of observations of atomic and molecular tracers in the galactic and extragalactic interstellar medium (ISM) requires comparisons with state-of-the-art astrophysical models to infer some physical conditions. Usually, ISM models are
Externí odkaz:
http://arxiv.org/abs/2309.01724