Avalanches and the Distribution of Reconnection Events in Magnetized Circumstellar Disks
The Astrophysical Journal, 2023 Cosmic rays produced by young stellar objects can potentially alter the ionization structure, heating budget, chemical composition, and accretion activity in circumstellar disks.
Marco Fatuzzo +3 more
doaj +1 more source
Mass Accretion Processes in Young Stellar Objects: Role of Intense Flaring Activity
Acta Polytechnica CTU Proceedings, 2014 According to the magnetospheric accretion scenario, young low-mass stars are surrounded by circumstellar disks which they interact with through accretion of mass. The accretion builds up the star to its nal mass and is also believed to power the mass out
Salvatore Orlando +3 more
doaj +1 more source
DYNAMICS OF CIRCUMSTELLAR DISKS III: THE CASE OF GG Tau A [PDF]
, 2016 We present two-dimensional hydrodynamic simulations using the Smoothed Particle Hydrodynamic code, VINE, to model a self-gravitating binary system. We model configurations in which a circumbinary torus+disk surrounds a pair of stars in orbit around each ...
A. Nelson, F. Marzari
semanticscholar +1 more source
RADIATION MAGNETOHYDRODYNAMIC SIMULATIONS OF PROTOSTELLAR COLLAPSE: NONIDEAL MAGNETOHYDRODYNAMIC EFFECTS AND EARLY FORMATION OF CIRCUMSTELLAR DISKS [PDF]
, 2015 The transport of angular momentum by magnetic fields is a crucial physical process in the formation and evolution of stars and disks. Because the ionization degree in star-forming clouds is extremely low, nonideal magnetohydrodynamic (MHD) effects such ...
K. Tomida, S. Okuzumi, M. Machida
semanticscholar +1 more source
An Introduction to High Contrast Differential Imaging of Exoplanets and Disks [PDF]
Publications of the Astronomical Society of the Pacific, 2023 This tutorial is an introduction to High-Contrast Imaging, a technique that enables astronomers to isolate light from faint planets and/or circumstellar disks that would otherwise be lost amidst the light of their host stars.
K. Follette
semanticscholar +1 more source
GRAIN GROWTH IN THE CIRCUMSTELLAR DISKS OF THE YOUNG STARS CY Tau AND DoAr 25 [PDF]
, 2015 We present new results from the Disks@EVLA program for two young stars: CY Tau and DoAr 25. We trace continuum emission arising from their circusmtellar disks from spatially resolved observations, down to tens of AU scales, at λ = 0.9, 2.8, 8.0, 9.8 mm ...
L. P'erez +21 more
semanticscholar +1 more source
2021 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules [PDF]
Astrophysical Journal Supplement Series, 2021 To date, 241 individual molecular species, composed of 19 different elements, have been detected in the interstellar and circumstellar medium by astronomical observations.
B. McGuire
semanticscholar +1 more source
The Astrophysical Journal Letters, 2023 We report Atacama Large Millimeter/submillimeter Array (ALMA) polarization observations at 3 and 0.9 mm toward the GG Tau A system. In the ring, the percentage is relatively homogeneous at 3 mm, being 1.2%, while it exhibits a clear radial variation at 0.
Ya-Wen Tang +9 more
doaj +1 more source
Tracing planet-induced structures in circumstellar disks using molecular lines [PDF]
, 2015 Circumstellar disks are considered to be the birthplace of planets. Specific structures like spiral arms, gaps, and cavities are characteristic indicators of planet-disk interaction.
F. Ober +4 more
semanticscholar +1 more source
CIRCUMSTELLAR DISKS AROUND BINARY STARS IN TAURUS [PDF]
, 2014 We have conducted a survey of 17 wide (>100 AU) young binary systems in Taurus with the Atacama Large Millimeter Array (ALMA) at two wavelengths. The observations were designed to measure the masses of circumstellar disks in these systems as an aid to ...
R. Akeson, E. Jensen
semanticscholar +1 more source