Zobrazeno 1 - 10
of 66
pro vyhledávání: '"W. A. Schutte"'
Publikováno v:
Journal of Risk Model Validation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b64b11b40afe837ef7a9e2170e094d7
https://doi.org/10.21314/jrmv.2019.212
https://doi.org/10.21314/jrmv.2019.212
Publikováno v:
None
The desorption due to the energy release of free radicals in the ice mantles of a dust grain is investigated theoretically by calculating the ultraviolet radiation field inside the cloud, the free radical accumulation, the cosmic-ray heating of the g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5a442647a35ef2e8da2e9dc42e8b566
https://doi.org/10.1051/0004-6361:20031669
https://doi.org/10.1051/0004-6361:20031669
Publikováno v:
Astronomy and Astrophysics
Astronomy and Astrophysics, 413, 209-216
Astronomy and Astrophysics, 413, 209-216
The physical conditions governing the dense cloud environment are reproduced in a high vacuum experimental setup at low temperature T 12 K. The accretion and photoprocessing of ices on grain surfaces is simulated by depositing an ice layer on a cold
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bd8a46512dc9fdf7a09e6894d5c6e94
https://doi.org/10.1051/0004-6361:20031447
https://doi.org/10.1051/0004-6361:20031447
Autor:
W. A. Schutte, G. M. Muñoz Caro
Publikováno v:
Astronomy and Astrophysics
Astronomy and Astrophysics, 412, 121-132
Astronomy and Astrophysics, 412, 121-132
We simulate experimentally the physical conditions present in dense clouds by means of a high vacuum experimental setup at low temperature T ≈ 12 K. The accretion and photoprocessing of ices on grain surfaces is simulated in the following way: an i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96c9e47b2e19892dcc1d9e9d78705bbd
https://doi.org/10.1051/0004-6361:20031408
https://doi.org/10.1051/0004-6361:20031408
Publikováno v:
Astronomy & Astrophysics. 399:169-175
We obtained near-infrared spectroscopy of the high mass young stellar object W 33A between 1.9-2.5 µm in search of absorption features of circumstellar ices. The 2.27 µ mb and of CH3OH is positively identified in the spectrum, its intensity being f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce7bfb67a9da025481be665bbbef39aa
https://doi.org/10.1051/0004-6361:20021798
https://doi.org/10.1051/0004-6361:20021798
Autor:
R. K. Khanna, W. A. Schutte
Publikováno v:
Astronomy & Astrophysics. 398:1049-1062
We have investigated whether the nu_4 feature of NH4+ is a viable candidate for the 6.85 micron absorption band seen towards embedded young stellar objects. To produce NH4+ astrophysical ice analogs consisting of H2O, CO2, NH3 and O2 were UV photolys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faf5fc4d46358ff8c668e7a395b68b40
https://doi.org/10.1051/0004-6361:20021705
https://doi.org/10.1051/0004-6361:20021705
Publikováno v:
Astronomy and Astrophysics
We investigate the 2-3 µm ISO-SWS spectrum of the luminous protostellar object S 140:IRS1. Two narrow absorption features are detected at 2.70 and 2.77 μm, which are well fitted with laboratory spectra of the ν_1 + ν_3 and the 2ν_2 + ν_3 combin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d615217a7fe8f09e7164e88a4f6e2f6d
https://doi.org/10.1051/0004-6361:20010977
https://doi.org/10.1051/0004-6361:20010977
Publikováno v:
Astronomy & Astrophysics. 367:347-354
Experiments simulating the processing of various hydrocarbon species under diffuse and dense cloud conditions by UV irradiation were performed. The results indicate that such molecules will be efficiently dehydrogenated in interstellar space. It is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::564975df953044b632355f5dbbb0b230
https://doi.org/10.1051/0004-6361:20000341
https://doi.org/10.1051/0004-6361:20000341
Autor:
Luigi Colangeli, W. A. Schutte, R. Ruiterkamp, John Robert Brucato, Vito Mennella, J.M. Greenberg, G. M. Muñoz Caro
Publikováno v:
Astronomy & Astrophysics. 367:355-361
We present the results of a laboratory program aimed at studying the effects induced by energetic UV photons on hydrogenated carbon particles. Experiments have been performed under simulated diffuse and dense interstellar medium conditions. To monito
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34303265302f6f0a535470e6b836f9ee
https://doi.org/10.1051/0004-6361:20000340
https://doi.org/10.1051/0004-6361:20000340
Autor:
E. F. van Dishoeck, Erika L. Gibb, Jacqueline V. Keane, Jean Chiar, Adwin Boogert, O. Kerkhof, Perry A. Gerakines, Pascale Ehrenfreund, Douglas C. B. Whittet, Alexander G. G. M. Tielens, W. A. Schutte
Publikováno v:
Astrophys. J.
This paper presents, for the —rst time, a complete 2.4¨25 km spectrum of the dust-embedded young stellar object W33A. The spectrum was obtained with the Short Wavelength Spectrometer of the Infrared Space Observatory at a mean resolving power of D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6df9f212a84010508f270f3ab7b881b
https://doi.org/10.1086/308940
https://doi.org/10.1086/308940