Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Schneider N"'
Autor:
Christensen, I. Barlach, Wyrowski, F., Veena, V. S., Beuther, H., Semenov, D., Menten, K. M., Jacob, A. M., Kim, W. -J., Cunningham, N., Gieser, C., Hacar, A., Li, S., Schneider, N., Skretas, I., Winters, J. M.
Deuterated molecules and their molecular D/H-ratios (RD(D)) are important diagnostic tools to study the physical conditions of star-forming regions. The degree of deuteration, RD(D), can be significantly enhanced over the elemental D/H-ratio dependin
Externí odkaz:
http://arxiv.org/abs/2406.09145
Autor:
Rashidi, A., Yahia, H., Bontemps, S., Schneider, N., Bonne, L., Hennebelle, P., Scholtys, J., Attuel, G., Turiel, A., Simon, R., Cailly, A., Zebadua, A., Cherif, A., Lacroix, C., Martin, M., Aouni, A. El, Sakka, C., Maji, S. K.
Publikováno v:
Astronomy & Astrophysics 2024
We present significant improvements to our previous work on noise reduction in {\sl Herschel} observation maps by defining sparse filtering tools capable of handling, in a unified formalism, a significantly improved noise reduction as well as a decon
Externí odkaz:
http://arxiv.org/abs/2406.00893
Autor:
Guevara, C., Ossenkopf-Okada, J. Stutzki V., Graf, U., Okada, Y., Schneider, N., Goldsmith, P. F., Pérez-Beaupuits, J. P., Kabanovic, S., Mertens, M., Rothbart, N., Güsten, R.
Context. Recent studies of the optical depth comparing [12CII] and [13CII] line profiles in Galactic star-forming regions revealed strong self-absorption in [12CII] by low excitation foreground material, implying a large column density of C+ correspo
Externí odkaz:
http://arxiv.org/abs/2404.17538
Autor:
Schneider, N., Ossenkopf-Okada, V., Keilmann, E., Roellig, M., Kabanovic, S., Bonne, L., Csengeri, T., Klein, B., Simon, R., Comeron, F.
High-latitude intermediate-velocity clouds (IVCs) are part of the Milky Way's HI halo and originate from either a galactic fountain process or extragalactic gas infall. They are partly molecular and can most of the time be identified in CO. Some of t
Externí odkaz:
http://arxiv.org/abs/2404.15739
Autor:
Tiwari, M., Kievit, R., Kabanovic, S., Bonne, L., Falasca, F., Guevara, C., Higgins, R., Justen, M., Karim, R., Kavak, Ü., Pabst, C., Pound, M. W., Schneider, N., Simon, R., Stutzki, J., Wolfire, M., Tielens, A. G. G. M.
We explore the potential of the Gaussian Mixture Model (GMM), an unsupervised machine learning method, to identify coherent physical structures in the ISM. The implementation we present can be used on any kind of spatially and spectrally resolved dat
Externí odkaz:
http://arxiv.org/abs/2310.02939
Autor:
Bonne, L., Kabanovic, S., Schneider, N., Zavagno, A., Keilmann, E., Simon, R., Buchbender, C., Guesten, R., Jacob, A. M., Jacobs, K., Kavak, U., Polles, F. L., Tiwari, M., Wyrowski, F., Tielens, A. G. G. M
Publikováno v:
A&A 679, L5 (2023)
It has long been discussed whether stellar feedback in the form of winds and/or radiation can shred the nascent molecular cloud, thereby controlling the star formation rate. However, directly probing and quantifying the impact of stellar feedback on
Externí odkaz:
http://arxiv.org/abs/2310.01657
Autor:
Bonne, L., Bontemps, S., Schneider, N., Simon, R., Clarke, S. D., Csengeri, T., Chambers, E., Graf, U., Jackson, J. M., Klein, R., Okada, Y., Tielens, A. G. G. M., Tiwari, M.
We present new $^{13}$CO(1-0), C$^{18}$O(1-0), HCO$^{+}$(1-0) and H$^{13}$CO$^{+}$(1-0) maps from the IRAM 30m telescope, and a spectrally-resolved [CII] 158 $\mu$m map observed with the SOFIA telescope towards the massive DR21 cloud. This traces the
Externí odkaz:
http://arxiv.org/abs/2305.07785
Autor:
Pouteau, Y., Motte, F., Nony, T., Gonzalez, M., Joncour, I., Robitaille, J. -F., Busquet, G., Galvan-Madrid, R., Gusdorf, A., Hennebelle, P., Ginsburg, A., Csengeri, T., Sanhueza, P., Dell'Ova, P., Stutz, A. M., Towner, A. P. M., Cunningham, N., Louvet, F., Men'shchikov, A., Fernandez-Lopez, M., Schneider, N., Armante, M., Bally, J., Baug, T., Bonfand, M., Bontemps, S., Bronfman, L., Brouillet, N., Diaz-Gonzalez, D., Herpin, F., Lefloch, B., Liu, H. -L., Lu, X., Nakamura, F., Luong, Q. Nguyen, Olguin, F., Tatematsu, K., Valeille-Manet, M.
Publikováno v:
A&A 674, A76 (2023)
Among the most central open questions regarding the initial mass function (IMF) of stars is the impact of environment on the shape of the core mass function (CMF) and thus potentially on the IMF. The ALMA-IMF Large Program aims to investigate the var
Externí odkaz:
http://arxiv.org/abs/2212.09307
Autor:
Clarke, S. D., Sanchez-Monge, A., Williams, G. M., Howard, A. D. P., Walch, S., Schneider, N.
We present an analysis of the outer Galaxy giant molecular filament (GMF) G214.5-1.8 (G214.5) using Herschel data. We find that G214.5 has a mass of $\sim$ 16,000 M$_{\odot}$, yet hosts only 15 potentially protostellar 70 $\mu$m sources, making it hi
Externí odkaz:
http://arxiv.org/abs/2211.02422
Autor:
Tiwari, M., Wolfire, M., Pound, M. W., Tarantino, E., Karim, R., Bonne, L., Buchbender, C., Güsten, R., Guevara, C., Kabanovic, S., Kavak, Ü., Mertens, M., Schneider, N., Simon, R., Stutzki, J., Tielens, A. G. G. M.
We quantified the effects of stellar feedback in RCW 49 by determining the physical conditions in different regions using the [CII] 158 $\mu$m and [OI] 63 $\mu$m observations from SOFIA, the $^{12}$CO (3-2) observations from APEX and the H$_2$ line o
Externí odkaz:
http://arxiv.org/abs/2208.08174