Results 81 to 90 of about 5,108 (182)
The protoplanetary disks – some examples [PDF]
, 2009 Protoplanetary disks have been observed around several young stars.
Biała, Jadwiga
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The Astrophysical JournalProtoplanetary disks can exhibit asymmetric temperature variations due to phenomena such as shadows cast by the inner disk or localized heating by young planets. We investigate the disk features induced by these asymmetric temperature variations. We find
Zhaohuan Zhu +2 more
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Modeling Gas Distribution in Protoplanetary Accretion Disks [PDF]
, 2010 Protoplanetary accretion disks are disks of dust and gas which surround and feed material onto a forming star in the earliest stages of its evolution. One of the most useful methods for studying these disks is near infrared spectroscopy of rovibrational ...
Lewis, Josiah +2 more
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The Astrophysical JournalOur understanding of how exoplanets form and evolve relies on analyses of both the mineralogy of protoplanetary disks and their detailed structures; however, these key complementary aspects of disks are usually studied separately.
William Grimble +9 more
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The Evolution of Protoplanetary Disks: A Decade of HST Coronagraphy [PDF]
, 2007 This viewgraph presentation reviews the evolution of protoplanetary disks with the use Hubble Space Telescope coronagrphic imagery. The contents include: 1) Why Protoplanetary Disks in a Meeting on Exo-Planets and Debris Disks; 2) Protoplanetary Disks; 3)
Grady, C. A.
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The Planetary Science JournalIn protoplanetary disks, organic mantle is regarded as promoting the collisional sticking of rocky dust grains. However, the surface energy, which is one of the primary factors determining collisional sticking, has not been well quantified.
Yuuya Nagaashi +2 more
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Measuring the Two-dimensional Thermal Structures of Protoplanetary Disks
The Astrophysical JournalWe present a flexible, annulus-by-annulus method to constrain the 2D thermal structure of a protoplanetary disk from optically thick spectral line emission.
Anna J. Fehr, Sean M. Andrews
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Magnetic fields in protoplanetary disks [PDF]
, 1996 We study the origin, configuration and effects of magnetic fields in protoplanetary disks. Standard accretion disk models are adopted for protoplanetary disks to determine their electrical properties.
Reyes-Ruiz, Mauricio
core
Evolution of PAHs in Protoplanetary Disks [PDF]
, 2011 Depending on whom you ask, PAHs are either the smallest dust particles or the largest gas-phase molecules in space. Whether referred to as gas or dust, these PAHs can contain up to 20% of the total cosmic carbon abundance and as such also play an ...
Kamp, I. +4 more
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Tracing Pebble Drift History in Two Protoplanetary Disks with CO Enhancement
The Astrophysical JournalPebble drift is an important mechanism for supplying the materials needed to build planets in the inner region of protoplanetary disks. Thus, constraining pebble drift’s timescales and mass flux is essential to understanding planet formation history ...
Tayt Armitage +17 more
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