Results 31 to 40 of about 2,982 (223)
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
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Constraining the Earliest Circumstellar Disks and Their Envelopes [PDF]
The Astrophysical Journal, 2008 23 pages, 4 figures, accepted for publication in the Astrophysical ...
Chiang, Hsin-Fang +4 more
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MIGRATION OF PLANETS EMBEDDED IN A CIRCUMSTELLAR DISK [PDF]
The Astrophysical Journal, 2011 Planetary migration poses a serious challenge to theories of planet formation. In gaseous and planetesimal disks, migration can remove planets as quickly as they form. To explore migration in a planetesimal disk, we combine analytic and numerical approaches. After deriving general analytic migration rates for isolated planets, we use N-body simulations
Bromley, Benjamin C., Kenyon, Scott J.
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Azimuthal Patterns in Planetesimal Circumstellar Disks
Astronomy Letters, 2023 24 pages, 8 figures.
Demidova, Tatiana V. +1 more
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Chemical History of Molecules in Circumstellar Disks [PDF]
Proceedings of the International Astronomical Union, 2011 AbstractThe chemical composition of a protoplanetary disk is determined not only by in situ chemical processes during the disk phase, but also by the history of the gas and dust before it accreted from the natal envelope. In order to understand the disk's chemical composition at the time of planet formation, especially in the midplane, one has to go ...
Visser, R., Van Dishoeck, E., Doty, S.
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Detection of DCO+in a circumstellar disk [PDF]
Astronomy & Astrophysics, 2003 Accepted by A&A Letters; 4 pages, 1 ...
Dishoeck, E.F. +2 more
openaire +5 more sources
Millimetre/Sub-millimetre Observations of Circumstellar Disks [PDF]
, 2011 International audienceTTauri disks located in nearby star-forming regions (e.g. Taurus-Auriga at 140 pc) are thought to be the site of planet formation, since proto-planetary disks orbiting around active (still accreting) TTauri stars should contain, in ...
Dutrey, Anne
core +1 more source
Processed and Unprocessed Ices in Circumstellar Disks [PDF]
Highlights of Astronomy, 2005 AbstractWe present 3-5 µm VLT-ISAAC spectroscopy showing the presence of methanol ices in edge-on disks of young embedded stars. Examples include the disks of L1489 IRS in Taurus and CRBR 2422.8-3423 in Ophiuchus, the last of which has the highest column density of solid CO known toward a YSO.
Pontoppidan, K. +3 more
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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
Unveiling the Circumstellar Envelope and Disk: A Subarcsecond Survey of Circumstellar Structures [PDF]
The Astrophysical Journal, 2000 47 Pages, 18 Figures, ApJ ...
Looney, Leslie W. +2 more
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