Results 21 to 30 of about 2,036 (233)
Gravitational Instabilities in Circumstellar Disks [PDF]
Annual Review of Astronomy and Astrophysics, 2016 Star and planet formation are the complex outcomes of gravitational collapse and angular momentum transport mediated by protostellar and protoplanetary disks. In this review, we focus on the role of gravitational instability in this process. We begin with a brief overview of the observational evidence for massive disks that might be subject to ...
K. Kratter, G. Lodato
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Microlensing of Circumstellar Disks
The Astrophysical Journal, 2005 9 pages, 7 figures.
Zheng, Zheng, Ménard, Brice
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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
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Odessa Astronomical Publications, 2017 The mechanism of protoplanetary system formation as a result of a merge of binary star consisting of the low mass (0.5-1M⊙) pre-MS stars is considered. During the merging the more massive component is destroyed. The substance of the destroyed component
F. V. Sirotkin, V. G. Karetnikov
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Modeling of large-scale disk perturbation eclipses of UX Ori stars with the puffed-up inner disks
Open Astronomy, 2022 Eclipses of UX Ori stars by compact gas–dust clouds and large-scale circumstellar disk perturbations are modeled. A flared disk and a disk with a puffing-up in the dust sublimation zone are considered.
Shulman Sergey, Grinin Vladimir
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The Astrophysical JournalYoung protostellar binary systems, with expected ages less than ∼10 ^5 yr, are little modified since birth, providing key clues to binary formation and evolution. We present a first look at the young, Class 0 binary protostellar system R CrA IRAS 32 from
Frankie J. Encalada +21 more
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Heat Transfer, Volume 55, Issue 1, Page 764-774, January 2026.ABSTRACT This review explores the impact of gravitational instability on convective heat transfer, integrating existing research results and theoretical models. Gravitational instability is vital in promoting or hindering convective actions in different systems, such as atmospheric events, ocean currents, and industrial processes.
Hossam A. Nabwey +3 more
wiley +1 more source
The Astrophysical Journal LettersWe present observations of the gamma-ray binary PSR B1259-63/LS 2883 with the Atacama Large Millimeter/submillimeter Array (ALMA) at Band 3 (97 GHz), Band 6 (233 GHz), and Band 7 (343 GHz).
Yutaka Fujita +5 more
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Open Astronomy, 2013 The star V2282 Sgr is positionally consistent with a strong Chandra X-ray and a Spitzer/IRAC mid-infrared source. We derived its long-term I-band light curve from the photographic archives of the Asiago and Catania Observatories, covering the years from ...
Nesci R. +4 more
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Observations of circumstellar disks [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractIn this review I will present recent results obtained between 2005, which was the last “Be-stars” meeting in Sapporo, and 2010, on the observations of circumstellar disks around active hot stars.
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