Results 81 to 90 of about 400,542 (301)

Development of 1D Non-ideal MHD Simulation Code Towards understanding Long-term Evolution of Protoplanetary Disk

The Astrophysical Journal
We developed a one-dimensional magnetohydrodynamic (MHD) simulation code to investigate the long-term evolution of protoplanetary disks with low computational cost.
Yudai Kobayashi, Daisuke Takaishi, Yusuke Tsukamoto, Shantanu Basu   +3 more
doaj   +1 more source

Parent body thermal metamorphism of enstatite chondrites: Disentangling the effects of shock melting

Meteoritics &Planetary Science, Volume 60, Issue 12, Page 2828-2863, December 2025.
Abstract Enstatite chondrites (ECs) formed on at least two parent bodies, EH and EL. After the accretion of the EC parent bodies, EC material was subjected to varying degrees of parent body thermal metamorphism (measured by petrologic types 3–6), due to heat released by radioactive isotope decay.
Peter Mc Ardle, Rhian H. Jones, Patricia L. Clay, Romain Tartèse, Ray Burgess, Brian O'Driscoll, Eric W.G. Hellebrand, Jonathan Fellowes, Arthur Goodwin, Lewis Hughes   +9 more
wiley   +1 more source

Radial Migration of Gap-opening Planets in Protoplanetary Disks. I. The Case of a Single Planet [PDF]

Astrophysical Journal, 2018
A large planet orbiting a star in a protoplanetary disk opens a density gap along its orbit due to the strong disk–planet interaction and migrates with the gap in the disk.
Kazuhiro D. Kanagawa, Hidekazu Tanaka, E. Szuszkiewicz   +2 more
semanticscholar   +1 more source

LAMOST Reveals Long-lived Protoplanetary Disks

The Astronomical Journal
While both observations and theories demonstrate that protoplanetary disks are not expected to live much longer than ∼10 Myr, several examples of prolonged disks have been observed in the past.
Xiao-Long Wang, Min Fang, Yao Liu, Miao-Miao Zhang, Wen-Yuan Cui   +4 more
doaj   +1 more source

Heating and cooling processes in disks*

EPJ Web of Conferences, 2015
This chapter summarises current theoretical concepts and methods to determine the gas temperature structure in protoplanetary disks by balancing all relevant heating and cooling rates.
Woitke Peter
doaj   +1 more source

The Qingzhen reaction, a fine‐grained mineral assemblage associated with djerfisherite in some EH3 chondrites: Alteration on the EH parent body

Meteoritics &Planetary Science, Volume 60, Issue 12, Page 2913-2934, December 2025.
Abstract Enstatite chondrites formed under extremely reducing conditions in the protoplanetary disk. They are derived from two or more parent bodies, EH and EL, and both EH and EL groups contain petrologic type 3–6 samples. The rare lithophile‐ and halogen‐bearing sulfide, djerfisherite, occurs in low abundance in enstatite chondrites, most frequently ...
Peter Mc Ardle, Rhian H. Jones, Luke Daly, Romain Tartèse, Patricia L. Clay, Brian O'Driscoll, Ray Burgess, William Smith, Colin How, Lewis Hughes   +9 more
wiley   +1 more source

GoFish: Fishing for Line Observations in Protoplanetary Disks

Journal of Open Source Software, 2019
Molecular line observations are an essential complement to high resolution continuum data when studying the planet formation environment, the protoplanetary disk.
R. Teague
semanticscholar   +1 more source

A millimeter Continuum Size–Luminosity Relationship for Protoplanetary Disks [PDF]

, 2017
We present a survey at subarcsecond resolution of the 340 GHz dust continuum emission from 50 nearby protoplanetary disks, based on new and archival observations with the Submillimeter Array.
A. Tripathi, S. Andrews, T. Birnstiel, D. Wilner   +3 more
semanticscholar   +1 more source

An Analytical Model of Radial Dust Trapping in Protoplanetary Disks [PDF]

Astrophysical Journal, 2019
We study dust concentration in axisymmetric gas rings in protoplanetary disks. Given the gas surface density, we derived an analytical total dust surface density by taking into account the differential concentration of all grain sizes.
A. Sierra, S. Lizano, Enrique Mac'ias, C. Carrasco-Gonz'alez, M. Osorio, M. Flock   +5 more
semanticscholar   +1 more source

Chemistry of Complex Organic Molecules in the V883 Ori Disk Revealed by ALMA Band 3 Observations

The Astronomical Journal
Complex organic molecules (COMs) in protoplanetary disks are key to understanding the origin of volatiles in comets in our solar system, yet the chemistry of COMs in protoplanetary disks remains poorly understood.
Yoshihide Yamato, Shota Notsu, Yuri Aikawa, Yuki Okoda, Hideko Nomura, Nami Sakai   +5 more
doaj   +1 more source