Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Bertram Donn"'
Autor:
Bertram Donn
Publikováno v:
Annals of the New York Academy of Sciences. 119:5-16
Autor:
Bertram Donn
Publikováno v:
Planetary and Space Science. 47:1163-1170
Autor:
Bertram Donn, J. Mark Duva
Publikováno v:
Astrophysics and Space Science. 212:43-47
Autor:
Jürgen Blum, W. J. Markiewicz, W-H. Ip, H. Kochan, Gerhard Schwehm, Hugo Fechtig, Stuart J. Weidenschilling, Knut Metzler, Bertram Donn, H. U. Keller, M. Rott, Ingrid Mann, A. El Goresy, Gregor E. Morfill, Berndt Feuerbacher, Lorenz Ratke, Eberhard Grün
Publikováno v:
Advances in Space Research. 13:73-76
A micro-gravity experiment to study the growth of dust particles has been proposed to be flown on one of the Columbus precursor flights. The micro-gravity environment will allow for low collision velocities (of order of mm s−1) of the dust grains a
Autor:
Bertram Donn
Publikováno v:
Interplanetary Dust and Zodiacal Light ISBN: 9783540076155
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ae0c064fe4d4bfa7d3b5a1321141525
https://doi.org/10.1007/3-540-07615-8_506
https://doi.org/10.1007/3-540-07615-8_506
Autor:
Bertram Donn
Publikováno v:
The Diffuse Interstellar Bands ISBN: 9789401041676
Following the proposal that PAH’s may be the source of the unidentified infrared emission bands, extensive laboratory spectroscopy has been carried out. These measurements have been generally consistent with that hypothesis, and interstellar PAH’
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f8785a90d621d3a2b2e99ecdebefc96
https://doi.org/10.1007/978-94-011-0373-2_22
https://doi.org/10.1007/978-94-011-0373-2_22
Autor:
J. Mark Duva, Bertram Donn
Publikováno v:
Planetary Systems: Formation, Evolution, and Detection ISBN: 9789401045032
A mechanism of accumulation of grains in the primordial solar nebula is described. This process produces porous, low density compressible aggregates. Compaction of the aggregates in a collision between them dissipates the kinetic energy of the collis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1489ff53904bafbf5ad306d8f0bcd5c0
https://doi.org/10.1007/978-94-011-1154-6_5
https://doi.org/10.1007/978-94-011-1154-6_5
Autor:
Bertram Donn
Publikováno v:
Comets in the Post-Halley Era ISBN: 9789401054942
The evidence for the accumulation of the terrestrial planets and comets from solid grains is reviewed briefly. The various proposals for formation of cometary nuclei are described and commented upon. With three exceptions, all hypotheses conclude or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a83c0f0e0b78bef346af78ee657e8ba
https://doi.org/10.1007/978-94-011-3378-4_15
https://doi.org/10.1007/978-94-011-3378-4_15
Publikováno v:
The Astrophysical Journal. 428:L81
Infrared spectra of H2O, CH3OH, and NH3 condensed at T less than 20 K on amorphous silicate smokes reveal that predominantly crystalline phase ice forms directly on deposit. Spectra of these molecules condensed on aluminum substrates at T less than 2
Publikováno v:
Journal of Geophysical Research. 96:17541
Infrared spectra of H2O + CO2 and H2O + CO ices before and after proton irradiation showed that a major reaction in both mixtures was the interconversion of CO2 yields CO. Radiation synthesized organic compounds such as carbonic acid were identified