Results 21 to 30 of about 5,114 (225)

CHEMICAL PROCESSES IN PROTOPLANETARY DISKS [PDF]

open access: yesThe Astrophysical Journal, 2010
24 pages, 13 figures, accepted for publication in ...
Walsh, C, Millar, TJ, Nomura, H
openaire   +5 more sources

Interferometry and the study of protoplanetary disks [PDF]

open access: yesEPJ Web of Conferences, 2015
Interferometry offers access to scales that are unresolvable using single dish telescopes, which is especially important when investigating objects with small angular sizes, such as protoplanetary disks. This Chapter introduces the concept of interferometry, and describes the basic aspects of interferometric observations when considering long (i.e. sub-
Ilee, John David, Greaves, Jane Sophia
openaire   +4 more sources

Ionization and heating by X-rays and cosmic rays*

open access: yesEPJ 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

The Determination of Protoplanetary Disk Masses [PDF]

open access: yes, 2017
In this article we review the methods used to determine the gas and dust masses of protoplanetary disks, with an emphasis on the lesser characterized total gas mass. Our review encompasses all the indirect tracers and the methodology that is be used to isolate the hidden H2 via dust, CO, and HD emission.
Bergin, Edwin A., Williams, Jonathan P.
openaire   +2 more sources

Scattered Radiation of Protoplanetary Disks

open access: yesUniverse, 2022
Scattered radiation of circumstellar (CS) dust plays an important role in the physics of young stars. Its observational manifestations are various but more often they are connected with the appearance of intrinsic polarization in young stars and their CS
Vladimir P. Grinin   +1 more
doaj   +1 more source

PROTOPLANETARY DISK STRUCTURES IN OPHIUCHUS [PDF]

open access: yesThe Astrophysical Journal, 2009
ApJ in press: 51 pages, 13 ...
Andrews, Sean M.   +4 more
openaire   +2 more sources

Three-dimensional, Time-dependent MHD Simulation of Disk–Magnetosphere–Stellar Wind Interaction in a T Tauri, Protoplanetary System

open access: yesThe Astrophysical Journal, 2023
We present a three-dimensional, time-dependent MHD simulation of the short-term interaction between a protoplanetary disk and the stellar corona in a T Tauri system.
Ofer Cohen   +6 more
doaj   +1 more source

Thermodynamics of the dead-zone inner edge in protoplanetary disks

open access: yes, 2014
International audienceContext. In protoplanetary disks, the inner boundary between the turbulent and laminar regions could be a promising site for planet formation, thanks to the trapping of solids at the boundary itself or in vortices generated by the ...
Faure, Julien   +5 more
core   +1 more source

Resonant Relaxation in Protoplanetary Disks [PDF]

open access: yesThe Astronomical Journal, 1998
19 pages, 1 figure, LaTeX, submitted to ...
openaire   +2 more sources

Vortices in Protoplanetary Disks [PDF]

open access: yesThe Astrophysical Journal, 1999
We use a high order accuracy spectral code to carry out two-dimensional time-dependent numerical simulations of vortices in accretion disks. In particular, we examine the stability and the life time of vortices in circumstellar disks around young stellar objects. The results show that cyclonic vortices dissipate quickly, while anticyclonic vortices can
Godon, Patrick., Livio, Mario.
openaire   +2 more sources

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