Results 141 to 150 of about 55,496 (241)

Composition of Ices in Low-Mass Extrasolar Planets

, 2008
We study the formation conditions of icy planetesimals in protoplanetary disks in order to determine the composition of ices in small and cold extrasolar planets. Assuming that ices are formed from hydrates, clathrates, and pure condensates, we calculate
A. Cassan, D. Ehrenreich, Ehrenfreund P., Hibbitts C. A., Hibbitts C. A., J.‐P. Beaulieu, Kubas D., O. Mousis, Sekine Y., Shakura N. I., U. Marboeuf, V. Wakelam, Walmsley C. M., Watt G. D., Y. Alibert   +14 more
core   +4 more sources

Modeling the Impact of Moderate External UV Irradiation on Disk Chemistry

The Astrophysical Journal
The chemistry within a protoplanetary disk is greatly affected by external radiation from the local stellar environment. Previous work has focused on extreme radiation fields, representative of the center of something like the Orion Nebula Cluster ...
Rachel E. Gross, L. Ilsedore Cleeves
doaj   +1 more source

Evolution of the Solar Nebula. III. Protoplanetary Disks Undergoing Mass Accretion [PDF]

, 1997
Alan P. Boss
openalex   +1 more source

The Formation of Planets

, 1999
This paper reviews the dynamics of the growth of solid particles from micron-sized dust grains to planets in protostellar accretion disks.
Ruden, Steven P.
core   +2 more sources

A numerical turbulence model for multiphase flows in the protoplanetary nebula [PDF]

, 1995
Joëlle M. Champney, Anthony R. Dobrovolskis, Jeffrey N. Cuzzi   +2 more
openalex   +1 more source

A Comparison of Presolar Isotopic Signatures in Laboratory-Studied Primitive Solar System Materials and Comet 67P/Churyumov-Gerasimenko: New Insights from Light Elements, Halogens, and Noble Gases. [PDF]

Space Sci Rev, 2023
Hoppe P, Rubin M, Altwegg K.
europepmc   +1 more source

Molecular Line Observations of the Protoplanetary Nebula, IRAS 19312+1950 [PDF]

, 2003
Shuji Deguchi, Jun‐ichi Nakashima
openalex   +1 more source

Multi-Observatory Research of Young Stellar Energetic Flares (MORYSEF): X-Ray-flare-related Phenomena and Multi-epoch Behavior

The Astrophysical Journal
The most powerful stellar flares driven by magnetic energy occur during the early pre-main-sequence (PMS) phase. The Orion Nebula represents the nearest region populated by young stars, showing the greatest number of flares accessible to a single ...
Konstantin V. Getman, Eric D. Feigelson, Abygail R. Waggoner, L. Ilsedore Cleeves, Jan Forbrich, Joe P. Ninan, Oleg Kochukhov, Vladimir S. Airapetian, Sergio A. Dzib, Charles J. Law, Christian Rab   +10 more
doaj   +1 more source

The Physics of Protoplanetesimal Dust Agglomerates. Vi. Erosion of Large Aggregates as a Source of Micrometer-Sized Particles

, 2011
Observed protoplanetary disks consist of a large amount of micrometer-sized particles. Dullemond and Dominik (2005) pointed out for the first time the difficulty in explaining the strong mid-IR excess of classical T-Tauri stars without any dust-retention
Blum, Blum, Ciesla, Dominik, Furlan, Jürgen Blum, Nomura, Okuzumi, Okuzumi, Okuzumi, Poppe, Poppe, Rainer Schräpler, Schmitt, Schräpler, Shakura, Stepinski, van de Lagemaat, Wada, Weidenschilling, Weidenschilling, Weidenschilling   +21 more
core   +1 more source

Thermal and hydrostatic structure of the protoplanetary nebula exposed to stellar radiation and stellar wind from the central star [PDF]

, 2007
Young Seok Yun, Hiroyuki Emori, Kiyoshi Nakazawa   +2 more
openalex   +1 more source