Zobrazeno 1 - 10
of 717
pro vyhledávání: '"Wurm, G."'
Autor:
Becker, T., Onyeagusi, F. C., Teiser, J., Jardiel, T., Peiteado, M., Munoz, O., Martikainen, J., Martin, J. C. Gomez, Merrison, J., Wurm, G.
Within the RoadMap project we investigated the microphysical aspects of particle collisions during saltation on the Martian surface in laboratory experiments. Following the size distribution of ejected particles, their aerodynamic properties and aggr
Externí odkaz:
http://arxiv.org/abs/2409.10287
Publikováno v:
A&A, 670, A6 (2023)
In laboratory experiments, we heated chondritic material up to 1400K in a hydrogen atmosphere. Moessbauer spectroscopy and magnetometry reveal that, at high temperatures, metallic iron forms from silicates. The transition temperature is about 1200K a
Externí odkaz:
http://arxiv.org/abs/2301.12910
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 4, July 2022, Pages 5814 to 5817
In recent years, collisional charging has been proposed to promote the growth of pebbles in early phases of planet formation. Ambient pressure in protoplanetary disks spans a wide range from below $10^{-9}$ mbar up to way beyond mbar. Yet, experiment
Externí odkaz:
http://arxiv.org/abs/2206.01126
In previous laboratory experiments, we measured the temperature dependence of sticking forces between micrometer grains of chondritic composition. The data showed a decrease in surface energy by a factor ~5 with increasing temperature. Here, we focus
Externí odkaz:
http://arxiv.org/abs/2108.08034
Publikováno v:
A&A, 638, A151 (2020)
Sticking properties rule the early phases of pebble growth in protoplanetary discs in which grains regularly travel from cold, water-rich regions to the warm inner part. This drift affects composition, grain size, morphology, and water content as gra
Externí odkaz:
http://arxiv.org/abs/2007.00997
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Aerosol particles experience significant photophoretic forces at low pressure. Previous work assumed the average particle temperature to be very close to the gas temperature. This might not always be the case. If the particle temperature or the therm
Externí odkaz:
http://arxiv.org/abs/1605.01022
Hot temperature minerals have been detected in a large number of comets and were also identified in the samples of Comet Wild 2 that were returned by the Stardust mission. Meanwhile, observations of the distribution of hot minerals in young stellar s
Externí odkaz:
http://arxiv.org/abs/1105.6259
Protoplanetary disks start their lives with a dust free inner region where the temperatures are higher than the sublimation temperature of solids. As the star illuminates the innermost particles, which are immersed in gas at the sublimation edge, the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611757