Results 21 to 30 of about 17,073 (217)
The Apparent Absence of Forward Scattering in the HD 53143 Debris Disk
The Astrophysical Journal, 2023 HD 53143 is a mature Sun-like star and host to a broad disk of dusty debris, including a cold outer ring of planetesimals near 90 au. Unlike most other inclined debris disks imaged at visible wavelengths, the cold disk around HD 53143 appears as ...
Christopher C. Stark +7 more
doaj +1 more source
DIAGNOSING CIRCUMSTELLAR DEBRIS DISKS [PDF]
The Astrophysical Journal, 2010 Accepted for publication in the Astrophysical ...
openaire +2 more sources
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
Rotationally-Driven Fragmentation for the Formation of the Binary Protostellar System L1551 IRS 5 [PDF]
, 2016 Either bulk rotation or local turbulence is widely invoked to drive fragmentation in collapsing cores so as to produce multiple star systems. Even when the two mechanisms predict different manners in which the stellar spins and orbits are aligned ...
Hanawa, Tomoyuki +5 more
core +2 more sources
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
Imaging Polarimetric Observations of a New Circumstellar Disk System [PDF]
, 2001 Few circumstellar disks have been directly observed. Here we use sensitive differential polarimetric techniques to overcome atmospheric speckle noise in order to image the circumstellar material around HD 169142.
B. Parise +7 more
core +2 more sources
Planet–planet scattering in circumstellar gas disks [PDF]
Astronomy and Astrophysics, 2010 Astronomy and Astrophysics Letters, in ...
MARZARI, FRANCESCO +2 more
openaire +2 more sources
The Herschel Digit Survey Of Weak-Line T Tauri Stars: Implications For Disk Evolution And Dissipation [PDF]
, 2012 As part of the "Dust, Ice, and Gas In Time (DIGIT)" Herschel Open Time Key Program, we present Herschel photometry (at 70, 160, 250, 350, and 500 mu m) of 31 weak-line T Tauri star (WTTS) candidates in order to investigate the evolutionary status of ...
Augereau, Jean-Charles +10 more
core +4 more sources
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
Chemical Models of Circumstellar Disks [PDF]
Symposium - International Astronomical Union, 2000 We investigate the evolution of molecular abundances in circumstellar disks around young stars via numerical simulations. The results are compared with the composition of comets and radio observations of protoplanetary disks. First, we consider the molecular evolution in the midplane of the disk.
Yuri Aikawa, Eric Herbst
openaire +1 more source