Search Results - "Dulieu, F"

Formation of Complex Molecules in Prestellar Cores: A Multilayer Approach by Vasyunin, A. I., Caselli, P., Dulieu, F., Jiménez-Serra, I.

“…We present the results of chemical modeling of complex organic molecules (COMs) under conditions typical for prestellar cores. We utilize an advanced gas-grain…”
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Efficient formation route of the prebiotic molecule formamide on interstellar dust grains by Dulieu, F, Nguyen, T, Congiu, E, Baouche, S, Taquet, V

“…Abstract Interstellar complex organic molecules are thought to be the building blocks of more complex prebiotic compounds. In particular, formamide (or…”
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Seeds Of Life In Space (SOLIS): The Organic Composition Diversity at 300–1000 au Scale in Solar-type Star-forming Regions by Ceccarelli, C., Caselli, P., Fontani, F., Neri, R., López-Sepulcre, A., Codella, C., Feng, S., Jiménez-Serra, I., Lefloch, B., Pineda, J. E., Vastel, C., Alves, F., Bachiller, R., Balucani, N., Bianchi, E., Bizzocchi, L., Bottinelli, S., Caux, E., Chacón-Tanarro, A., Choudhury, R., Coutens, A., Dulieu, F., Favre, C., Hily-Blant, P., Holdship, J., Kahane, C., Al-Edhari, A. Jaber, Laas, J., Ospina, J., Oya, Y., Podio, L., Pon, A., Punanova, A., Quenard, D., Rimola, A., Sakai, N., Sims, I. R., Spezzano, S., Taquet, V., Testi, L., Theulé, P., Ugliengo, P., Vasyunin, A. I., Viti, S., Wiesenfeld, L., Yamamoto, S.

“…Abstract Complex organic molecules have been observed for decades in the interstellar medium. Some of them might be considered as small bricks of the…”
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Hydrogenation of CO-bearing species on grains: unexpected chemical desorption of CO by Minissale, M., Moudens, A., Baouche, S., Chaabouni, H., Dulieu, F.

“…The amount of methanol in the gas phase and the CO depletion from the gas phase are still open problems in astrophysics. In this work, we investigate…”
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Experimental H2O formation on carbonaceous dust grains at temperatures up to 85 K by Grieco, F, Dulieu, F, De Looze, I, Baouche, S

“…ABSTRACT Water represents the main component of the icy mantles on dust grains, it is of extreme importance for the formation of new species and it represents…”
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SOLIS IV. Hydrocarbons in the OMC-2 FIR4 Region, a Probe of Energetic Particle Irradiation of the Region by Favre, C., Ceccarelli, C., López-Sepulcre, A., Fontani, F., Neri, R., Manigand, S., Kama, M., Caselli, P., Al-Edhari, A. Jaber, Kahane, C., Alves, F., Balucani, N., Bianchi, E., Caux, E., Codella, C., Dulieu, F., Pineda, J. E., Sims, I. R., Theulé, P.

“…Abstract We report new interferometric images of cyclopropenylidene, c-C 3 H 2 , toward the young protocluster OMC-2 FIR 4. The observations were performed at…”
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Sulphur storage in cold molecular clouds: the case of the NH4+SH- salt on interstellar dust grains by Vitorino, J, Loison, J -C, Wakelam, V, Congiu, E, Dulieu, F

“…ABSTRACT In comets and in the cold phase of the interstellar medium (ISM), ammonium salts are key molecular species due to their role in the retention of…”
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Acetaldehyde binding energies: a coupled experimental and theoretical study by Ferrero, S, Grieco, F, Ibrahim Mohamed, A-S, Dulieu, F, Rimola, A, Ceccarelli, C, Nervi, C, Minissale, M, Ugliengo, P

“…ABSTRACT Acetaldehyde is one of the most common and abundant gaseous interstellar complex organic molecules found in cold and hot regions of the molecular…”
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FAUST VI. VLA1623−2417 B: a new laboratory for astrochemistry around protostars on 50 au scale by Codella, C, López-Sepulcre, A, Ohashi, S, Chandler, C J, De Simone, M, Podio, L, Ceccarelli, C, Sakai, N, Alves, F, Durán, A, Fedele, D, Loinard, L, Mercimek, S, Murillo, N, Zhang, Y, Bianchi, E, Bouvier, M, Busquet, G, Caselli, P, Dulieu, F, Feng, S, Hanawa, T, Johnstone, D, Lefloch, B, Maud, L T, Moellenbrock, G, Oya, Y, Svoboda, B, Yamamoto, S

“…ABSTRACT The ALMA (Atacama Large Millimeter Array) interferometer, with its unprecedented combination of high sensitivity and high angular resolution, allows…”
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CO2 FORMATION IN QUIESCENT CLOUDS: AN EXPERIMENTAL STUDY OF THE CO + OH PATHWAY by NOBLE, J. A, DULIEU, F, CONGIU, E, FRASER, H. J

“…The formation of CO2 in quiescent regions of molecular clouds is not yet fully understood, despite CO2 having an abundance of around 10%-34% H2O. We present a…”
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Variation of the sticking of methanol on low-temperature surfaces as a possible obstacle to freeze out in dark clouds by Gadallah, K A K, Sow, A, Congiu, E, Baouche, S, Dulieu, F

“…ABSTRACT Sticking of gas-phase methanol on different cold surfaces – gold, 13CO, and amorphous solid water (ASW) ice – was studied as a function of surface…”
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Laboratory studies of electron and ion irradiation of solid acetonitrile (CH3CN) by Abdulgalil, A. G. M., Marchione, D., Thrower, J. D., Collings, M. P., McCoustra, M. R. S., Islam, F., Palumbo, M. E., Congiu, E., Dulieu, F.

“…The structure and bonding of solid acetonitrile (CH3CN) films on amorphous silica are studied, and chemical and physical processes under irradiation with 200…”
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Quantum tunneling of oxygen atoms on very cold surfaces by Minissale, M, Congiu, E, Baouche, S, Chaabouni, H, Moudens, A, Dulieu, F, Accolla, M, Cazaux, S, Manicó, G, Pirronello, V

“…Any evolving system can change state via thermal mechanisms (hopping a barrier) or via quantum tunneling. Most of the time, efficient classical mechanisms…”
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Gas temperature dependent sticking of hydrogen on cold amorphous water ice surfaces of interstellar interest by Matar, E, Bergeron, H, Dulieu, F, Chaabouni, H, Accolla, M, Lemaire, J L

“…Using the King and Wells method, we present experimental data on the dependence of the sticking of molecular hydrogen and deuterium on the beam temperature…”
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Experimental Evidence for Water Formation Via Ozone Hydrogenation on Dust Grains at 10 K by Mokrane, H, Chaabouni, H, Accolla, M, Congiu, E, Dulieu, F, Chehrouri, M, Lemaire, J. L

“…The formation of water molecules from the reaction between ozone (O{sub 3}) and D-atoms is studied experimentally for the first time. Ozone is deposited on…”
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Laboratory evidence for the non-detection of excited nascent H2 in dark clouds by Congiu, E., Matar, E., Kristensen, L. E., Dulieu, F., Lemaire, J. L.

“…There has always been a great deal of interest in the formation of H2 as well as in the binding energy released upon its formation on the surface of dust…”
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Morphology of the solid water synthesized through the pathway D + O2 studied by the sensitive TPD technique by Accolla, M., Congiu, E., Manicò, G., Dulieu, F., Chaabouni, H., Lemaire, J. L., Pirronello, V.

“…We report on an experimental study on the formation of water, through the D + O2 pathway, on a sample of amorphous solid water, i.e. a realistic analogue of…”
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Detection of the elusive dangling OH ice features at ~2.7 μm in Chamaeleon I with JWST NIRCam by Noble, J. A., Fraser, H. J., Smith, Z. L., Dartois, E., Boogert, A. C. A., Cuppen, H. M., Dickinson, H. J., Dulieu, F., Egami, E., Erkal, J., Giuliano, B. M., Husquinet, B., Lamberts, T., Maté, B., McClure, M. K., Palumbo, M. E., Shimonishi, T., Sun, F., Bergner, J. B., Brown, W. A., Caselli, P., Congiu, E., Drozdovskaya, M. N., Herrero, V. J., Ioppolo, S., Jimenez-Serra, I., Linnartz, H., Melnick, G. J., McGuire, B. A., Oberg, K. I., Perotti, G., Qasim, D., Rocha, W. R. M., Urso, R. G.

“…Ascertaining the morphology and composition of the icy mantles covering dust grains in dense, cold regions of the interstellar medium is essential to…”
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Measurement of the adsorption energy difference between ortho- and para-D2 on an amorphous ice surface by Amiaud, L, Momeni, A, Dulieu, F, Fillion, J H, Matar, E, Lemaire, J-L

“…Molecular hydrogen interaction on water ice surfaces is a major process taking place in interstellar dense clouds. By coupling laser detection and classical…”
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Thermal desorption characteristics of CO, O2 and CO2 on non-porous water, crystalline water and silicate surfaces at submonolayer and multilayer coverages by Noble, J. A., Congiu, E., Dulieu, F., Fraser, H. J.

“…The desorption characteristics of molecules on interstellar dust grains are important for modelling the behaviour of molecules in icy mantles and, critically,…”
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