Results 11 to 20 of about 2,982 (223)

Circumstellar disks of the most vigorously accreting young stars [PDF]

open access: yesScience Advances, 2016
Subaru-HiCIAO observations on FU Orionis objects revealed asymmetric structures on 10 2 to 10 3 AU scales of circumstellar disks and envelopes.
Hauyu Baobab Liu   +2 more
exaly   +3 more sources

Turbulence in circumstellar disks [PDF]

open access: yesAstronomy & Astrophysics, 2004
We investigate the relationship between circumstellar disks and the Taylor-Couette flow. Using the Reynolds similarity principle, this results in a number of parameter-free predictions about stability of the disks, and their turbulent transport ...
B. Dubrulle   +5 more
core   +5 more sources

Dust in circumstellar disks [PDF]

open access: yes, 2006
This thesis presents observational and theoretical studies of the size and spatial distribution of dust particles in circumstellar disks. Using millimetre interferometric observations of optically thick disks around T Tauri stars, I provide conclusive
Rodmann, Jens
core   +2 more sources

Circumstellar disks around Herbig Be stars

open access: yesAstronomy and Astrophysics, 2009
Aims: Our goal is to investigate the properties of the circumstellar disks around intermediate mass stars to determine their occurrence, lifetime and evolution.
T Alonso-Albi, A Fuente, R Bachiller
exaly   +2 more sources

Sub-Keplerian accretion onto circumstellar disks [PDF]

open access: yesAstronomy and Astrophysics, 2010
Context. Models of the formation, evolution and photoevaporation of circumstellar disks are an essential ingredient in many theories of the formation of planetary systems.
C P Dullemond
exaly   +2 more sources

Infrared signatures and models of circumstellar dust disks

open access: yesNew Astronomy Reviews, 2008
This contribution describes theoretical models for the temperature and density Structure of circumstellar disks and what properties of disks may be determined from the analysis of disk images and spectral energy distributions.
Kenneth Wood
exaly   +2 more sources

Circumstellar disks and planets. Science cases for next-generation optical/infrared long-baseline interferometers

open access: yesAstronomy and Astrophysics Review, 2012
International audienceWe present a review of the interplay between the evolution of circumstellar disks and the formation of planets, both from the perspective of theoretical models and dedicated observations.
Alexander, Richard   +12 more
core   +3 more sources

Tracing episodic accretion with NOEMA: FU Orionis-type stars and their millimeter environment [PDF]

open access: yesEPJ Web of Conferences, 2022
The earliest phases of star formation are characterised by intense mass accretion from the circumstellar disk to the central star. One group of lowmass young stellar objects, FU Orionis-type stars (FUors) exhibit accretion rate peaks accompanied by ...
Fehér O.   +6 more
doaj   +1 more source

Vortices in Circumstellar Disks [PDF]

open access: yesThe Astrophysical Journal, 1995
uuencoded compressed PostScript file containing 30 pages. 5 figures available upon request. Submitted to ApJ.
Adams, Fred, Watkins, Richard
openaire   +2 more sources

Prebiotic Synthesis and Isomerization in Interstellar Analog Ice: Glycinal, Acetamide, and Their Enol Tautomers

open access: yesAngewandte Chemie, Volume 135, Issue 12, March 13, 2023., 2023
Out of the cold: Ammonia (NH3) and acetaldehyde (CH3CHO) are exposed to galactic cosmic ray proxies while frozen at 5 K to simulate the environment of an interstellar molecular cloud. Reactants undergo dissociation and radical recombination to produce glycinal (NH2CH2CHO) and acetamide (CH3CONH2) prior to tautomerization to 2‐aminoethenol (HOCHCHNH2 ...
Joshua H. Marks   +5 more
wiley   +2 more sources

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