Zobrazeno 1 - 10
of 727
pro vyhledávání: '"Akimkin V"'
The formation of solid macroscopic grains (pebbles) in protoplanetary discs is the first step toward planet formation. We aim to study the distribution of pebbles and the chemical composition of their ice mantles in a young protoplanetary disc. We us
Externí odkaz:
http://arxiv.org/abs/2403.02895
Autor:
Launhardt, R., Pavlyuchenkov, Ya. N., Akimkin, V. V., Dutrey, A., Gueth, F., Guilloteau, S., Henning, Th., Pietu, V., Schreyer, K., Semenov, D., Stecklum, B., Bourke, T. L.
Publikováno v:
A&A 678, A135 (2023)
The disk-outflow connection plays a key role in extracting excess angular momentum from a forming protostar. We have previously reported the discovery of a small molecular outflow from the edge-on T Tauri star in the Bok globule CB26 that shows a pec
Externí odkaz:
http://arxiv.org/abs/2309.01629
The thermal instability of accretion disks is widely used to explain the activity of cataclysmic variables, but its development in protoplanetary disks has been studied in less detail. We present a semi-analytical stationary model for calculating the
Externí odkaz:
http://arxiv.org/abs/2307.15544
Theoretical models predict that the obscuration of stellar radiation by irregularities on the surface of a protoplanetary disk can cause self-generating waves traveling towards the star. However, this process is traditionally simulated using the 1+1D
Externí odkaz:
http://arxiv.org/abs/2211.04896
Polycyclic aromatic hydrocarbons (PAHs) and fullerenes play a major role in the physics and chemistry of the interstellar medium. Based on a number of recent experimental and theoretical investigations we developed a model in which PAHs are subject t
Externí odkaz:
http://arxiv.org/abs/2210.11156
Heating by the central star is one of the key factors determining the physical structure of protoplanetary disks. Due to the large optical thickness in the radial direction, disk midplane regions are heated by the infrared radiation from the disk sur
Externí odkaz:
http://arxiv.org/abs/2203.06614
Autor:
White, Jacob Aaron, Kóspál, Á., Hughes, A. G., Ábrahám, P., Akimkin, V., Banzatti, A., Chen, L., de Miera, F. Cruz-Sáenz, Dutrey, A., Flock, M., Guilloteau, S., Hales, A. S., Henning, T., Kadam, K., Semenov, D., Sicilia-Aguilar, A., Teague, R., Vorobyov, E. I.
Extreme outbursts in young stars may be a common stage of pre-main-sequence stellar evolution. These outbursts, caused by enhanced accretion and accompanied by increased luminosity, can also strongly impact the evolution of the circumstellar environm
Externí odkaz:
http://arxiv.org/abs/2009.14216
The collisional evolution of solid material in protoplanetary disks is a crucial step in the formation of planetesimals, comets, and planets. Although dense protoplanetary environments favor fast dust coagulation, there are several factors that limit
Externí odkaz:
http://arxiv.org/abs/2001.06340
We present a numerical tool Shiva designed to simulate the dust destruction in warm neutral, warm ionized, and hot ionized media under the influence of photo-processing, sputtering, and shattering. The tool is designed primarily to study the evolutio
Externí odkaz:
http://arxiv.org/abs/1906.11308
The fact that infrared ring nebulae (IRRNs) are frequently associated with HII regions, provides us the opportunity to study dust at the interface between ionized and neutral gas. In this paper, we analyze the infrared radiation in the range from 8 t
Externí odkaz:
http://arxiv.org/abs/1905.11077