Results 131 to 140 of about 411,596 (264)

Mass Loss in Be Stars: News from Two Fronts

open access: yesGalaxies
Be stars are characterized by the presence of a circumstellar Keplerian disk formed from material ejected from the rapidly rotating stellar surface.
Alex C. Carciofi   +7 more
doaj   +1 more source

Unveiling Su Aurigae in the near Infrared: New high spatial resolution results using Adaptive Optics

open access: yes, 2004
We present here new results on circumstellar nebulosity around SU Aurigae, a T-Tauri star of about 2 solar mass and 5 Myrs old at 152 pc in the J, H and K bands using high resolution adaptive optics imaging (0$\farcs$30) with the Penn state IR Imaging ...
Abhijit Chakraborty   +5 more
core   +2 more sources

Disk in the Circumstellar Envelope of Carbon Mira V Cygni

open access: yesThe Astronomical Journal
Asymptotic giant branch (AGB) stars are the primary source of dust and complex molecules in the interstellar medium. The determination of outflow parameters is often hindered by the unknown geometry of the circumstellar environment, creating a demand for
Boris S. Safonov   +4 more
doaj   +1 more source

The effect of local optically thick regions in the long-wave emission of young circumstellar disks [PDF]

open access: green, 2012
Luca Ricci   +5 more
openalex   +3 more sources

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

open access: yes
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Using the Coolest Ae Stars to Constrain Circumstellar Disk Viscosity

open access: yesThe Astrophysical Journal
Classical Ae (CAe) stars are main-sequence, A-type stars with H α emission but no signature of dust. They are thought to be the cool extension of the classical Be stars to lower masses.
R. Anusha, T. A. A. Sigut
doaj   +1 more source

Photometric Monitoring of the First Eclipsing Binary Be Star: V658 Car

open access: yesGalaxies
V658 Car is the first known eclipsing binary system involving a classical Be star and an sdOB companion, offering a unique opportunity to study disk physics and binary interactions in unprecedented detail. From TESS data and multi-color observations from
Tajan H. de Amorim   +11 more
doaj   +1 more source

Light Echoes of Time-resolved Flares and Application to Kepler Data

open access: yesThe Open Journal of Astrophysics
Light echoes of stellar flares provide an intriguing option for exploring protoplanetary disks in young stellar systems. Previous work on light echoes of circumstellar disks made use of delta-function flares for modeling.
Austin King, Benjamin C. Bromley
doaj   +1 more source

Detection of the Circumstellar Disk Associated with 2MASS J0820-8003 in the eta Cha Cluster

open access: yes, 2012
The Nearby Young Moving Groups (NYMGs) of stars are ideal for the study of evolution circumstellar disks in which planets may form because their ages range from a few Myr to about 100 Myr, about the same as the interval over which planets are thought to ...
Constantin, Ana-Maria   +3 more
core   +1 more source

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