Tracing episodic accretion with NOEMA: FU Orionis-type stars and their millimeter environment [PDF]
EPJ 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
On the interaction between embedded planets and the corotation region of protoplanetary discs [PDF]
, 2015 PhDDisc material in the corotation region librates with respect to low-mass planets on horseshoe trajectories. The exchange of angular momentum associated with this libration gives rise to the non-linear corotation torque (the horseshoe drag).
Fendyke, Stephen
core +4 more sources
The –M disk Relationship for Herbig Ae/Be Stars: A Lifetime Problem for Disks with Low Masses?
The Astronomical Journal, 2023 The accretion of material from protoplanetary disks onto their central stars is a fundamental process in the evolution of these systems and a key diagnostic in constraining the disk lifetime. We analyze the relationship between the stellar accretion rate
Sierra L. Grant +5 more
doaj +1 more source
Axisymmetric MHD Simulations of Stellar Magnetosphere/Accretion Disk Interaction [PDF]
International Astronomical Union Colloquium, 1997 AbstractThe evolution of the inner disk region of magnetized accreting systems is studied by means of numerical simulations. Two different initial magnetic field topologies are studied: a pure dipole field which threads the disk continuously and a dipole field excluded from the disk by surface currents.
Kristen Miller, James Stone
openaire +1 more source
Inconsistency in the standard model for stellar thin accretion disks [PDF]
Physical Review D, 2012 We analyze the configuration of a thin rotating accretion disk, which is embedded in a magnetic field inducing a backreaction in the gravitating plasma. The aim of this study is to determine the conditions under which the gaseous accretion model of Shakura can be reconciled with the magnetohydrodynamical picture requested to trigger the underlying ...
Giovanni Montani, Nakia Carlevaro
openaire +1 more source
Near-infrared Accretion Signatures from the Circumbinary Planetary-mass Companion Delorme 1 (AB)b
The Astrophysical Journal Letters, 2022 Accretion signatures from bound brown dwarf and protoplanetary companions provide evidence for ongoing planet formation, and accreting substellar objects have enabled new avenues to study the astrophysical mechanisms controlling the formation and ...
S. K. Betti +10 more
doaj +1 more source
The Astrophysical Journal, 2023 Stellar-mass black holes can become embedded within the disks of active galactic nuclei (AGNs). Afterwards, their interactions are mediated by their gaseous surroundings.
Nicholas Kaaz +4 more
doaj +1 more source
AGN Disks Harden the Mass Distribution of Stellar-mass Binary Black Hole Mergers [PDF]
Astrophysical Journal, 2019 The growing number of stellar-mass binary black hole mergers discovered by Advanced LIGO and Advanced Virgo are starting to constrain the binaries’ origin and environment. However, we still lack sufficiently accurate modeling of binary formation channels
Y. Yang +6 more
semanticscholar +1 more source
Interaction of young stellar object jets with their accretion disk [PDF]
Astronomy & Astrophysics, 2005 I reexamine recent observations of velocity profiles across jets blown by young stellar objects, and argue that the observations do not support the interpretation of jets rotating around their symmetry axes. Instead, I propose that the interaction of the jets with a twisted-tilted (wrapped) accretion disk can form the observed asymmetry in the jets ...
openaire +2 more sources
Ram-pressure Stripping of a Kicked Hill Sphere: Prompt Electromagnetic Emission from the Merger of Stellar Mass Black Holes in an AGN Accretion Disk [PDF]
Astrophysical Journal, 2019 Accretion disks around supermassive black holes (SMBHs) are promising sites for stellar mass black hole (BH) mergers due to mass segregation and merger acceleration by disk gas torques. Here we show that a gravitational-wave (GW) kick at BH merger causes
B. McKernan +9 more
semanticscholar +1 more source