Results 121 to 130 of about 4,364 (222)

Dusty Blue Supergiants: News from High-Angular Resolution Observations

Advances in Astronomy, 2014
An overview is presented of the recent advances in understanding the B[e] phenomenon among blue supergiant stars in light of high-angular resolution observations and with an emphasis on the results obtained by means of long baseline optical stellar ...
W. J. de Wit, R. D. Oudmaijer, J. S. Vink   +2 more
doaj   +1 more source

Submillimetre observations of circumstellar dust

, 1989
Bibliography: p. 113-120.
openaire   +2 more sources

86th Annual Meeting of the Meteoritical Society (2024)

Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source

Ring-gap Structures in the Class I Circumstellar Disk of CrA IRS 2 Associated with the Magnetic Flux-driven Bubble

The Astrophysical Journal
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations with 0 $\mathop{.}\limits^{^{\prime\prime} }$ 1 resolution have revealed characteristic substructures in circumstellar disks around young Class I sources, providing clues to the ...
Ayumu Shoshi, Masayuki Yamaguchi, Mitsuki Omura, Kazuki Tokuda, Naofumi Fukaya, Kengo Tachihara, Masahiro N. Machida   +6 more
doaj   +1 more source

Dust distribution in circumstellar disks harboring multi-planet systems

Astronomy & Astrophysics
Context. Theoretical formation models and exoplanet detection surveys indicate that systems with multiple giant planets are common. Aims. We investigate how multiple super-thermal-mass planets embedded in a circumstellar disk shape the dust distribution ...
Roatti V., Picogna G., Marzari F.
doaj   +1 more source

Dust dynamics in planet-forming discs in binary systems. [PDF]

Eur Phys J Plus, 2023
Zagaria F, Rosotti GP, Alexander RD, Clarke CJ.   +3 more
europepmc   +1 more source

Hydrodynamical models and synthetic spectra of circumstellar dust shells around AGB stars. Pt. 1 Stationary solutions [PDF]

, 1997
We present a sample of hydrodynamical steady state models of circumstellar gas/dust shells around late type giants together with computed spectral energy distributions (SEDs).
Kiel Univ. (Germany). Inst. fuer Astronomie und Astrophysik), Men'shchikov, A. (Arbeitsgruppe ''Staub in Sternentstehungsgebieten'' an der Univ. Jena (Germany)), Astrophysikalisches Inst. Potsdam (Germany), Schoenberner, D. (Astrophysikalisches Inst. Potsdam (Germany)), Szczerba, R. (Astronomiczne Zentrum Mikolaja Kopernika, Torun (Poland), Calgary Univ., AB (Canada). Dept. of Physics and Astronomy), Steffen, M. (Astrophysikalisches Inst. Potsdam (Germany)   +6 more
core  

Deep Search for a Scattered Light Dust Halo Around Vega with the Hubble Space Telescope

The Astronomical Journal
We present a provisory scattered-light detection of the Vega debris disk using deep Hubble Space Telescope (HST) coronagraphy (PID 16666). At only 7.7 pc, Vega is immensely important in debris disk studies both for its prominence and also because it ...
Schuyler G. Wolff, András Gáspár, George H. Rieke, Jarron M. Leisenring, Kate Su, David J. Wilner, Luca Matrà, Marie Ygouf, Nicholas P. Ballering   +8 more
doaj   +1 more source

Azimuthal Dust Polarization from Aerodynamically Aligned Grains as Evidence for the Streaming Instability in Protoplanetary Disks

The Astrophysical Journal
(Sub)millimeter dust polarization in protoplanetary disks has revealed the presence of large (∼100  μ m) dust grains that are aligned along their long axis following the azimuthal direction of the disk.
Zhe-Yu Daniel Lin, Jeonghoon Lim, Jacob B. Simon, Zhi-Yun Li, Daniel Carrera, Manuel Fernández-López, Rachel Harrison, Rixin Li, Leslie W. Looney, Ian W. Stephens, Haifeng Yang   +10 more
doaj   +1 more source

Probing Dust and Gas Properties Using Ringed Disks

The Astrophysical Journal Letters
How rapidly a planet grows in mass and how far it may park from the host star depend sensitively on two nondimensional parameters: Stokes number St and turbulent α .
Eve J. Lee
doaj   +1 more source