Results 31 to 40 of about 376,241 (261)

Demographics of Protoplanetary Disks: A Simulated Population of Edge-on Systems

The Astrophysical Journal, 2023
The structure of protoplanetary disks plays an essential role in planet formation. A disk that is highly inclined, or “edge-on,” is of particular interest since its geometry provides a unique opportunity to study the disk’s vertical structure and radial ...
Isabel Angelo, Gaspard Duchene, Karl Stapelfeldt, Zoie Telkamp, François Ménard, Deborah Padgett, Gerrit Van der Plas, Marion Villenave, Christophe Pinte, Schuyler Wolff, William J. Fischer, Marshall D. Perrin   +11 more
doaj   +1 more source

2018 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules [PDF]

Astrophysical Journal Supplement Series, 2018
To date, 204 individual molecular species, comprised of 16 different elements, have been detected in the interstellar and circumstellar medium by astronomical observations.
B. McGuire
semanticscholar   +1 more source

Kinematic detection of a planet carving a gap in a protoplanetary disk [PDF]

Nature Astronomy, 2019
We still do not understand how planets form or why extrasolar planetary systems are so different from our own Solar System. However, the past few years have dramatically changed our view of the disks of gas and dust around young stars.
C. Pinte, C. Pinte, G. V. D. Plas, F. Ménard, Daniel J. Price, V. Christiaens, T. Hill, D. Mentiplay, C. Ginski, É. Choquet, Y. Boehler, G. Duchêne, G. Duchêne, S. Pérez, S. Casassus   +14 more
semanticscholar   +1 more source

The First Detection of 13C17O in a Protoplanetary Disk: A Robust Tracer of Disk Gas Mass [PDF]

Astrophysical Journal, 2019
Measurements of the gas mass are necessary to determine the planet formation potential of protoplanetary disks. Observations of rare CO isotopologues are typically used to determine disk gas masses; however, if the line emission is optically thick this ...
A. Booth, C. Walsh, J. Ilee, S. Notsu, C. Qi, H. Nomura, E. Akiyama   +6 more
semanticscholar   +1 more source

Dust evolution in protoplanetary disks [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractWe investigate the behaviour of dust in protoplanetary disks under the action of gas drag using our 3D, two-fluid (gas+dust) SPH code. We present the evolution of the dust spatial distribution in global simulations of planetless disks as well as of disks containing an already formed planet.
Gonzalez, Jean-François, Fouchet, Laure, T. Maddison, Sarah, Laibe, Guillaume   +3 more
openaire   +7 more sources

Protoplanetary Disk Rings and Gaps across Ages and Luminosities [PDF]

Astrophysical Journal, 2019
Since the discovery of the multiring structure of the HL Tau disk, ALMA data suggest that the dust continuum emission of many, if not all, protoplanetary disks consists of rings and gaps, no matter their spectral type or age.
N. van der Marel, R. Dong, J. di Francesco, Jonathan P. Williams, J. Tobin   +4 more
semanticscholar   +1 more source

A numerical approach to model chemistry of complex organic molecules in a protoplanetary disk

Open Astronomy, 2022
Multiphase astrochemical modeling presents a numerical challenge especially for the simulation of objects with the wide range of physical parameters such as protoplanetary disks.
Kiskin Mikhail Yu., Vasyunin Anton I., Akimkin Vitaly V.   +2 more
doaj   +1 more source

The Dispersal of Protoplanetary Disks [PDF]

, 2014
Protoplanetary disks are the sites of planet formation, and the evolution and eventual dispersal of these disks strongly influences the formation of planetary systems. Disk evolution during the planet-forming epoch is driven by accretion and mass-loss due to winds, and in typical environments photoevaporation by high-energy radiation from the central ...
Alexander, Richard, Pascucci, Ilaria, Andrews, Sean, Armitage, Philip, Cieza, Lucas   +4 more
openaire   +4 more sources

Water in Protoplanetary Disks [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractInfrared water line emission from protoplanetary disks, recently observed by the Spitzer and Herschel space telescopes, is thought to trace the surface layer of the inner to outer regions of the disks. We have modelled the water abundance profile and line emission, especially focusing on the effects of dust size growth and turbulent mixing ...
Nomura, H., Walsh, C., Heinzeller, D., Millar, T. J.   +3 more
openaire   +3 more sources

Ionization and heating by X-rays and cosmic rays*

EPJ Web of Conferences, 2015
High-energy radiation from the central T Tauri and protostars plays an important role in shaping protoplanetary disks and influences their evolution. Such radiation, in particular X-rays and extreme-ultraviolet (EUV) radiation, is predominantly generated
Güdel Manuel
doaj   +1 more source