Results 111 to 120 of about 73,704 (164)
Planet Formation Regulated by Galactic-scale Interstellar Turbulence
The Astrophysical Journal LettersPlanet formation occurs over a few Myr within protoplanetary disks of dust and gas, which are often assumed to evolve in isolation. However, extended gaseous structures have been uncovered around many protoplanetary disks, suggestive of late-stage infall
Andrew J. Winter +2 more
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exoALMA XXII: A Two-dimensional Atlas of Deviations from Keplerian Disks
The Astrophysical Journal LettersProtoplanetary disks are the birthplaces of planetary systems, and deviations from Keplerian rotation imprinted in disk gas kinematics serve as key tracers of physical processes and the presence of protoplanets within disks.
Misato Fukagawa +37 more
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Chemistry in Protoplanetary Disks
, 2010 14 pages, 2 figures, 2 tables, pre-final chapter to be published in Encyclopedia of Astrobiology by Gargaud, M.; Cernicharo, J.; Viso, M.; Cleaves II, H.J.; Pinti, D.; Amils, R.; Kobayashi, K.; Irvine, W.M. (Eds.), Springer, 2011 (ISBN: 978-3-642-11279-9)
openaire +2 more sources
On Kinematic Measurements of Self-gravity in Protoplanetary Disks
The Astrophysical JournalUsing controlled injection and recovery experiments, we devised an analysis prescription to assess the quality of dynamical measurements of protoplanetary disk gas masses based on resolved (CO) spectral line data, given observational limitations ...
Sean M. Andrews +4 more
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Substructure in externally irradiated protoplanetary disks
Astronomy & AstrophysicsIt is known that the external irradiation of protoplanetary disks by nearby massive stars can result in mass loss that impacts the disk evolution, however the dynamical impact of external irradiation upon the disk itself has not been explored in detail ...
Ziampras Alexandros +2 more
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The Early Evolution of Solids in Protoplanetary Disks: Observational Constraints from Millimeter Interferometry [PDF]
, 2011 Ricci, Luca
core +1 more source
The Carbon Isotopic Ratio and Planet Formation
The Astrophysical JournalWe present the first detection of ^13 CCH in a protoplanetary disk (TW Hya). Using observations of C _2 H, we measure CCH/ ^13 CCH = 65 ± 20 gas with a CO isotopic ratio of ^12 CO/ ^13 CO = 21 ± 5.
Edwin A. Bergin +8 more
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Evidence for Turbulent Concentration in Particle-laden Midplane Layers of Planet-forming Disks
The Astrophysical JournalWe investigate the axisymmetric, weakly turbulent state of settled particle layers in a model of a globally laminar protoplanetary disk. We focus on conditions in which the large-scale axisymmetric filaments associated with the streaming instability (SI)
Orkan M. Umurhan +4 more
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SO Emission in the Dynamically Perturbed Protoplanetary Disks around CQ Tau and MWC 758
The Astrophysical JournalWe report the serendipitous detection of the SO J _N = 6 _5 –5 _4 (219.949 GHz) rotational transition in archival Atacama Large Millimeter/submillimeter Array observations of the spiral hosting protoplanetary disks around CQ Tau (with ≈4.9 σ ...
Francesco Zagaria +27 more
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The Astrophysical JournalCurrent imaging observations of protoplanetary disks using the Atacama Large Millimeter/submillimeter Array (ALMA) primarily focus on the submillimeter wavelength, leaving a gap in effective observational approaches for centimeter-sized dust, which is ...
Yinhao Wu +3 more
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